WI-MOD-945-E 802.11 DSSS/OFDM Wireless Ethernet Modem & Device Server User Manual Version 2.16 Version 2.
Weidmuller Wireless Ethernet Modem & Device Server WI_MOD-945-E User Manual WEIDMULLER 821 Southlake Boulevard | Richmond, Virginia | 23236 Email: support@weidmuller.com Web: www.weidmuller.com WEIDMULLER Support Help-line USA 1-800-849-9343 Canada 1-800-268-4080 Mexico 01-222-2686267 Rest of the world +1 804 794 2887 ATTENTION! Incorrect termination of supply wires may cause internal damage and will void warranty.
FCC Notice: This device complies with Part 15.247 of the FCC Rules. Operation is subject to the following two conditions: 1. This device may not cause harmful interference and 2. This device must accept any interference received, including interference that may cause undesired operation. This device must be operated as supplied by Weidmuller. Any changes or modifications made to the device without the written consent of Weidmuller may void the user’s authority to operate the device.
Important Notice: WEIDMULLER products are designed to be used in industrial environments, by experienced industrial engineering personnel with adequate knowledge of safety design considerations. WEIDMULLER radio products are used on unprotected license-free radio bands with radio noise and interference. The products are designed to operate in the presence of noise and interference, however in an extreme case, radio noise and interference could cause product operation delays or operation failure.
Limited Lifetime Warranty, Disclaimer, and Limitation of Remedies WEIDMULLER products are warranted free from manufacturing defects for the “serviceable lifetime” of the product. The “serviceable lifetime” is limited to the availability of electronic components. If the serviceable life is reached in less than three years following the original purchase from WEIDMULLER, WEIDMULLER will replace the product with an equivalent product if an equivalent product is available.
CONTENTS Default WEP Key ........................................................... 34 CHAPTER 1 - INTRODUCTION .........................................9 1.0 - NETWORK TOPOLOGY ................................................9 1.1 - GETTING STARTED QUICKLY ....................................12 WEP Shares Authentication Mode ................................. 34 WEP Open Authentication Mode ................................... 34 CHAPTER 2 - INSTALLATION ........................................ 13 2.
3.22 - VLAN ...................................................................66 What is VLAN .............................................................66 Operation ...................................................................67 VLAN Group ...............................................................67 Interface Membership ................................................68 Examples ...................................................................68 Client:.....................................
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Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual CHAPTER 1 - INTRODUCTION The WI-MOD-945-E Industrial 802.11 Wireless Ethernet module provide wireless connections between Ethernet devices and/or Ethernet wired networks (LAN’s) and complies with relevant IEEE 802.11 standard. WI-MOD-945-E 802.11 630mW max power WI-MOD-945-E-H 802.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual The second diagram shows extended using WI-MODAccess Point is configured wireless link will still work if Access Point an existing LAN being 945-E’s. In this example, the at the LAN end - although the the Client is at the LAN end. Client LAN Ethernet Device Ethernet Device An Access Point can connect to multiple Clients. In this case, the Access Point should be the “central” unit.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual Bridge vs Router Each WI-MOD-945-E is configured with an IP address for the Ethernet side, and another for the wireless side. A Bridge connects devices within the same Ethernet network - for example, extending an existing Ethernet LAN. For a Bridge, the IP address for the wireless side is the same as the Ethernet side. 192.168.0.72 192.168.0.34 Access Point Bridge Client Bridge 192.168.0.34 192.168.0.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual 1.1 - Getting Started Quickly Most applications for the WI-MOD-945-E require little configuration. The WI-MOD-945-E has many sophisticated features, however if you don’t require these features, this section will allow you to configure the units quickly. First, read Chapter 2, “Installation”. The WI-MOD-945-E requires an antenna and a power supply.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual CHAPTER 2 - INSTALLATION 2.0 - General The WI-MOD-945-E modules are housed in a rugged aluminum case, suitable for DIN-rail mounting. Terminals will accept 2 wires up to 2.5 mm (12 gauge) in size. All connections to the module must be SELV (Safety Extra Low Voltage). Normal 110-250V mains supply must not be connected to any terminal of the WI-MOD-945-E module. Refer to Section 2.3 Power Supply.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual Note: When only one antenna is used, it must be connected to the TX/RX connector. Antenna Diversity There are two main reasons for using Antenna diversity; the first is to improve the reliability of a radio link that may be affected by multipath signals.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual problem. However where the radio path changes because the WI-MOD-945-E is mounted on moving equipment, or if there is moving equipment in the area, then the solution is to use two antennas. Because the two connectors are separated, the RF signal at each connector will be different in the presence of multi-path fading.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual antenna is not already shielded from lightning strike by an adjacent earthed structure, a lightning rod may be installed above the antenna to provide shielding. Dipole and Collinear antennas 1 wavelength A dipole or collinear antenna transmits the same amount of radio power in all directions - as such that are easy to install and use.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual 2.2 - Power Supply The WI-MOD-945-E module can be powered from a 9 30VDC power supply. The power supply should be rated at 1 Amp minimum. The positive side of the supply must not be connected to earth. The supply negative is connected to the unit case internally. The DC supply may be a floating supply or negatively grounded.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual RS485 Serial Port The RS485 port provides for communication between the WI-MOD-945-E unit and its host device using a multi-drop cable. Up to 32 devices may be connected in each multi-drop network. As the RS485 communication medium is shared, only one of the units on the RS485 cable may send data at any one time. Thus, communication protocols based on the RS-485 standard require some type of arbitration.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual 2.4 - Discrete (Digital) Input/Output The WI-MOD-945-E has one on-board discrete/digital I/O channel. This channel can act as either a discrete input or discrete output. It can be monitored, or set remotely, or alternatively used to output a communications alarm status.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual CHAPTER 3 - OPERATION 3.0 - Start-up “Access Point” Start-up When an Access Point (AP) unit starts up it will immediately begin transmitting periodic messages, called beacons on the configured channel. Beacons include information that a Client may examine in order to identify if the Access Point is suitable for link establishment.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual compatible). If there are multiple Access Points it will select the connection with the best signal level. This functionality permits a client to have mobility whilst maintaining a link with the most suitable AP. LED Indication The following table details the status of the indicating LEDs on the front panel under normal operating conditions.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual 4 x non overlapping 1.25MHz channels 4 x partially overlapping 2.5MHz channels 3 x overlapping 5MHz channels 1 x 10MHz channel If operating in Hong Kong the frequency range is 922-925MHz and the available channels are: 2 x non overlapping 1.25MHz channels 1 x 2.5MHz channel Regions will only show the available channels for that location. See below for a diagram of the frequency ranges and channels.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual Selecting a 20 MHz channel will give the maximum TCP/IP throughput of around 22 Mbps however if the band width is reduced (10MHz, 5MHz, etc) the maximum data throughput will also be reduced For an indication of the data throughput levels used with different channel bandwidths see “WI-MOD-945-E Radio Data Throughput” table below.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual Throughput and Repeaters It should also be noted that if using repeaters to extend the range there will be a reduction in throughput for each repeater hop. The following table shows the drop in throughput for each hop and for each of the channel widths.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual 3.2 - Configuring the Unit for the first time The WI-MOD-945-E has a built-in web server, containing web pages for analysing and modifying the module’s configuration. The configuration can be accessed using Microsoft® Internet Explorer version 7 or greater. This program is shipped with Microsoft Windows or may be obtained freely via the Microsoft® website.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual Method 1 - Set PC to same network as WI-MOD-945-E Connect the Ethernet cable between unit and the PC configuring the module. Set the Factory Default Switch to the SETUP position. This will always start the WI-MOD-945-E with Ethernet IP address 192.168.0.1XX, subnet mask 255.255.255.0, gateway IP 192.168.0.1 and the radio disabled.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual Figure 13 – Main Screen To resume normal configured operation when Configuration is complete, switch Factory Default dip-switch on the WIMOD-945-E to RUN and cycle power. Note: Security Certificates. Configuration of the WI-MOD-945-E uses an encrypted link (https). The security certificate used by the WI-MOD-945-E is issued by WEIDMULLER and matches the IP address 192.168.0.100.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual _ . -. _-' ,=' .' ,' / _____ ,-' / | \\ | /||\\ `\/ ||| ;_,_,/ _-'|- | \\`. '',/~7 \_ " / \\.`-_/ `-|--'~~`--_ \ ' _-~o ,=='||\=_ `==-/ `-| /| '-~^\_/ | / __,----'~~~~~~~~~`-----.__ `//====- \_|// . ______-==. __,--' . \\ |`\ //- / /|- _/ _,'` \\ || / `\. \ ,|| )-'\~' \ / / \ / _/` _,--"' `\_ \__ ,' || `| \'--===-' | ____,-'~` `~~~~`---.___.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual 3.3 - Quick Start Figure 15 - Quick Start The WI-MOD-945-E has a Quick Start Configuration option, which will cover most important parameters that are needed to get an initial connection. This is the first stage of the module configuration. For most applications, no further configuration is required.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual 3.4 - Network Configuration Figure 16 - Network You can view or modify Ethernet network parameters by selecting the “Network” menu. When prompted for username and password, enter “user” as the username, and “user” as the password in the password field (This is the factory default – See section 3.23 - “Module Information Configuration” to change).
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual WPA2 (Wi-Fi Protected Access 2) replaced WPA and provides significant security improvements over this method. In particular, it introduces CCMP, a new AES-based encryption mode with strong security. WPA/WPA2-PSK (Legacy Support) enables the modem to communicate to all WPA methods including TKIP, AES and WPA2 AES. Generally only used if the network has older devices that does not support the higher level encryption methods.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual section below for details) Device Mode Used to select Bridge or Router mode. By default this is set to Bridge. If VLAN is enabled the Device Mode will indicate “VLAN” and the IP Address and Netmask will only be editable from the VLAN page. Bridge STP Checking this box enables Spanning Tree protocol in bridged networks. See to section 3.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual 3.5 - Spanning Tree Algorithm The bridge “Spanning Tree Protocol” function was introduced to handle network loops and provide redundant paths in networks. To enable tick the STP box on any “WDS Connections” you have configured on the “Repeaters” configuration page. For example, consider this network with a redundant wireless link.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual You will now need to go to the “Security Menu” and enter in the encryption keys (WEP), passphrase (WPA), etc. WEP (64 bit) & (128 bit) Encryption Keys 1 to 4 These are the keys used to encrypt radio data to protect data from unwanted eavesdroppers when WEP Encryption is selected. These keys should be the same for all WI-MOD945-E units in the same system. WEP keys must be entered as pairs of hexadecimal digits separated by colons.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual For optimal security consider using a passphrase consisting of a combination of letters and numbers (i.e. not just a simple word or phrase) as well as upper and lower case. E.g. “WiReLeSs TeChNoLoGy 2010” WPA Enterprise - Authenticator (AP) Configuration RADIUS Server IP Address/Port/shared secret: Connection information for the RADIUS Authentication Server.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual 3.7 - Normal Operation After addresses are configured, the units are ready for operation. Refer to section 1 for an explanation on the operation of a Bridge and Router. Bridge Operation (Transparent Network) A bridge connects several Ethernet networks together, and makes them appear as a single Ethernet network to higher protocol layers. By default, the WI-MOD-945-E is configured as a transparent bridge.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual The WI-MOD-945-E can be configured for different radio transmission rates. A reduction in rate increases the reliable range (transmission distance). The factory-default data rate settings are suitable for the majority of applications and should only be modified by experienced users. The WI-MOD-945-E allows for a configurable fixed rate or an Auto radio transmission rate.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual useful in unencrypted radio networks. Save Changes Save changes to non-volatile memory. Changes will not take effect until module is reset. Save Changes and Reset Save changes to non-volatile memory and reset module Channel Selection WI-MOD-945-E (900MHz 802.11) channel selection is done by selecting the appropriate channel from the drop down list. Only channels available for that region will be available.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual 3.9 - Advanced Radio Configuration Some of the more advanced radio settings have been moved from the normal Radio configuration page so as to simplify the configuration process. Care should be taken when making changes to parameters on this page. Figure 24 - Advanced Radio TX Antenna Select which antenna port the module will transmit from.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual Interference Mitigation (AP only) Interference Mitigation should only be turn on (Default is Off) if using Demo Whip antenna’s or if there is a high level of background interference. By enabling this option the radio will dynamically adjust radio parameters to help mitigate interference based on any background interference.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual If you wish to use routing over this serial network connection, then the IP addresses selected must not lie on Wireless or Wired Ethernet networks already configured into the device. You must ensure they set routing rules appropriately for devices either side of the network.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual Serial Gateway (Modbus - Modbus RTU to TCP) When configured as “Modbus”, will allow a serial Modbus RTU Client (Master) to connect with a single Ethernet Modbus TCP Server (Slave) With the Modbus Function the serial data is encapsulated within a TCP/IP data frame and made available on the Ethernet network.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual Modbus TCP to RTU Gateway The Modbus TCP to RTU Gateway allows an Ethernet Modbus/TCP Client (Master) to communicate with a serial Modbus RTU Slave. The WI-MOD-945-E makes this possible by internally performing the necessary protocol conversion. The conversion is always performed by the WI-MOD-945-E which is directly connected to the Modbus serial device (i.e. only this module needs to have Modbus TCP to RTU Gateway enabled).
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual 3.11 - Serial Menu RS-232 / RS485 Serial Port Configuration (Common to all) RS232 Port Select the desired functionality. Select either PPP, Serial Gateway or Modbus TCP to RTU Data Rate The serial data rate desired. Serial data rates available range from 110bps to a maximum of 115,200bps. Data Format The data format desired. All the standard data formats are supported.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual Character Timeout Enter the maximum delay (in msec) between received serial characters before packet is sent via network. Packet Size The number of received bytes that will be buffered before a packet is sent via the network. Multicast Group Port Enter the UDP port number that all members of the group will use (i.e. all group members should use the same port number).
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual 3.12 - Multicast Pipe Manager Previously it has been difficult to connect a single TCP device, i.e. a Scada / DCS system to multiple remote multicast serial devices. Multicast Pipe allows this type of connection. Example: An example would be a Scada system that needs to communicate with multiple remote serial devices. A modem can be placed at each remote location and connected serially to each device.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual 3.13 - Digital Input/Output The functionality of the shared Digital Input/Output pin may be configured via the “I/O Transfer” webpage. As this pin is shared, the Digital Input status will be ON when the Digital Output is set ON. The Digital I/O channel can be transferred to/from another device using Modbus (see section “3.15 Modbus I/O Transfer”) or it can be configured to provide status of the module communications.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual 4374 TCP-RTU Connection Status (RS232) inverted 4375 TCP-RTU Connection Status (RS485) inverted 4376 TCP-RTU Modbus Server Connection Status inverted 4377 Multicast Pipe Connection Status inverted 4378-4999 Reserved for future use Modbus TCP Client (Master) enables the WI-MOD-945-E to connect to one or more Modbus TCP Servers (Slaves).
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual The WI-MOD-945-E provides a configurable option to automatically reset the value of the onboard I/O registers to zero in the event of a communications failure. If a valid Modbus transaction directed to/from a given register has not been completed for longer than a configurable timeout, then the value of that register will be reset to zero. An example of the Modbus functionality of the WI-MOD-945-E is illustrated below.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual The third mapping takes the 8 registers read by the second mapping and writes them to the serial unit A. The specified Device ID 5 is the Modbus Address of the serial device A, and the Server IP Address 192.168.0.196 is the IP Address of the local unit B since the local Modbus TCP to RTU Gateway is to route the message out the serial port to unit A.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual Response Timeout Enter the timeout (in milliseconds) to wait for a response to the specified transaction. Comm Fail Register Enter the onboard I/O Register number to store the communication status of the specified transaction. The Specified register will be set to 0 if communications is successful, 0xFFFF if there is no connection to the specified server, or 0xFFxx where xx is the Modbus Exception Code 3.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual Roam check Interval If a better AP is not found, the background scan is repeated every Roam Check Interval while the signal strength to the currently connected AP is below the Roam Scan Threshold. Channel Width Channel Width setting will apply only when there are no entries in the Scan List. Selects channel width bands for background scan. If 5MHz is selected then only 5MHz channels will be scanned during the background scan.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual 3.16 - Repeaters (WDS) Figure 33 - WDS Repeaters The range of a wireless network can be extended by allowing Access Points to behave as repeaters and forward traffic to other Access Points. Access Point to Access Point communications is also known as Wireless Distribution System (WDS). The WI-MOD-945-E offers very powerful WDS configuration, allowing for a mesh network with self-healing functionality.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual Specify SSID for AP/STA modes or MAC Address for Point to point mode. Router IP and Subnet should be left blank unless that WDS interface is to be on a different subnet. Leaving these fields blank will mean that the WDS interface will be bridged with the default wireless interface. Encryption is not inherited from the main page.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual Mode, this must match WEP Key 1 on the Access point this virtual client will connect to. For AP mode, clients must configure their WEP Key 1 to the same value as this key and select the Default WEP Key to be WEP Key 1. Router IP Leave this field blank if this WDS interface is to be bridged with the default wireless interface.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual The WDS configuration for unit B is shown above (this page is accessible via the Repeaters link from the configuration web pages). Site B is acting as an Access point for Site A, and is a client to Site C, likewise Site C is acting as an Access Point for Site B, and a Client for Site D. Since this example is a bridged network i.e.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual Figure 37 - Site B WDS Configuration 2 Example 3 – Adding Redundancy In the example below, 4 x Access Points (A, B, C, & D) form a mesh network using only WDS bridge interfaces. Each of the Access Points may also have its own clients associated. Each Access Point is configured with a different SSID, meaning the clients associated with each Access Point are fixed.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual Figure 40 - Site A&D WDS configuration Encryption levels and key above are shows as being different however they can be the same as in some of the earlier examples. One reason why the Encryption level and key would be different is because the Access Point may have clients that communicate using a different Encryption method e.g. 128 bit WEP and may not support the same Encryption method.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual Each Modem has a different SSID. This is done to limit broadcast traffic and to route data only were it needs to go. Site B has two Virtual Client WDS links configured – one to Site A’s Access Point, and one to Site C’s Access Point. The screenshot below shows the WDS connections at Site B. Figure 42 - Site B Configuration The first entry configures a virtual WDS Client connection from Site B to the Access Point at Site A.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual 3.17 - Routing Rules When a WI-MOD-945-E receives an IP frame that is destined for an IP address on a different network, it checks if the network address matches the network address of one of its own interfaces (i.e. hard-wired Ethernet, or wireless Ethernet, or WDS) and forwards the frame appropriately.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual The Routing Rules configuration page can be accessed by selecting the “Routing” link on any of the configuration web pages. Up to 30 routing rules may be added to each WI-MOD-945-E. The table below summarizes the configurable parameters of a routing rule. Figure 46 - Routing Rules Name A name to describe the routing rule (Max 32 characters).
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual 3.18 - Filtering Figure 47 - Filtering When configured as a Bridge, the WI-MOD-945-E will transmit all broadcast messages appearing at its wired Ethernet port. When the WI-MOD-945-E is configured as a Router, this does not occur. In many cases, the intended recipient of the broadcast traffic does not lie at the opposite end of a proposed radio link.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual When configuring a Whitelist it is important to add the Addresses of all devices connected to the WI-MOD-945-E wired Ethernet port, that communicate over the wireless link. It is particularly important to add the Address of the configuration PC to the Whitelist. Failure to add this address will prevent the configuration PC from making any further changes to configuration.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual IP Address Filter Configuration: The IP filter allows can be used to permit or deny network access to specific devices through the use of Blacklists (blocking of traffic that matches a rule) and Whitelists (allow traffic that matches a rule). The IP filter entry will match either source or destination address in the packet.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual IP Netmask Sets the IP Netmask Save Changes Save changes to non-volatile memory (Reset is required to activate) Save Changes and Reset Save to non-volatile memory and restart to activate changes 3.19 - DHCP Client Configuration DHCP (Dynamic Host Configuration Protocol) allows DHCP Clients to automatically obtain their IP Address at start-up.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual naming authority. If your network is stand-alone, this field is set to an arbitrary name of your choice. Device Name (Host Name) This is the DNS name of the local device. (Commonly referred to as the host name or computer name). This setting is duplicated on the main Module Information configuration page. This is the name which is used to refer to this device. (Refer Section 3.23 - Module Information Configuration” 3.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual Operation VLAN Pass-through is enabled by default in the modem. No VLAN configuration is needed and modem will happily pass any VLAN tagged frames. To initiate VLAN Bridge or Router operation, VLAN Aware mode must be enabled on the VLAN page. When VLAN is enabled a default “Management VLAN Group” is created bridging the Ethernet and Wireless interfaces and configuring both with untagged frames.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual VLAN ID A valid 12 bit IEEE802.1Q VID, with a range of 1-4095. The VLAN ID will be added to all outgoing VLAN tagged frames for this VLAN Group. All incoming VLAN tagged frames for the VLAN Group must have this VLAN ID. VLAN Priority An IEEE802.1Q compatible, 3 bit Priority Code Point, with a range of 0-7 where seven is the highest priority, one is the lowest and zero is the default, which is a mid-range “Best Effort” value.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual Figure 51 - VLAN Example 1 The module configuration below shows there are two VLAN groups configured. The first group is used for management of the module and ensures a connection is maintained for configuration and diagnostic from untagged devices on the VLAN trunk.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual Figure 53 - VLAN Example 2 The module is configured with three wireless interfaces, the first one is the normal wireless interface found on the Network page (wi0), the second (wi1) and third (wi2) are virtual interfaces created on the Repeaters page. Each interface is configured as an Access Point and can be setup with unique SSID’s and Encryption settings, etc.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual Figure 54 - Example 2 Configuration The other VLAN groups each have an Ethernet and a wireless Interface configured. All Ethernet interfaces are tagged as they are all connected to a VLAN network, each wireless interface is configured as untagged to allow connection from untagged devices.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual VLAN Group 2 is bridging the default wireless interface with the “VLAN ID 10” virtual Ethernet interface. Configuration of the wireless bridge, i.e. Operating Mode, SSID and Radio Encryption methods/keys, etc is done from the main network page, example below.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual 3.23 - Module Information Configuration Module Information Webpage Fields This configuration page is primarily for information purposes. With the exception of the password, the information entered here is displayed on the home configuration webpage of the WI-MOD-945-E. Username Configuration of Username. This is the username used to access the configuration on the WI-MOD-945-E.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual 3.24 - Configuration Examples Setting a WI-MOD-945-E to Factory Default Settings Access configuration webpages on the WI-MOD-945-E. Refer section”3.2 - ”Configuring the Unit for the first time”. Click on “System Tools” Menu Item Click on Factory Default Configuration Reset, and wait for unit to reset. While the module executes the reset sequence the OK LED will flash.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual Ensure the ESSID and Radio Encryption method match the Access Point. If encryption is used, ensure the encryption keys or passphrase match the Access Point. Client 2 Configuration As above, however set the Ethernet and Wireless IP addresses as 192.168.0.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual Set the Ethernet IP address to 192.168.0.200, network mask 255.255.255.0 Set the Wireless IP address to 169.254.102.54, network mask 255.255.255.0 Select the Radio Encryption required, and enter encryption keys or passphrase if necessary. Set dipswitch to RUN. Click on button Save to Flash and Reset. Webpage will display that message indicating details are being written to flash.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual CHAPTER 4 4.0 - DIAGNOSTICS Diagnostics Chart LED Indicator Condition Meaning OK GREEN Normal Operation OK RED Continuously Supply voltage too low.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual 4.1 - Connectivity The Connectivity webpage displays connections and available networks. The “Connected Devices” section displays the radio channel, received signal strength, and radio data rate for each Client or Access Point by their MAC Address. The readings shown are based upon the last received data message from the Access Point or Client.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual Site Survey Site Survey is a one off snapshot showing what Access Points are available for connection. This list is only available on Clients and only available at start-up of the module or by selecting Background Scanning on the radio page. Figure 61 - Connectivity / Site Survey Site Survey SSID The Service Set Identifier or Network Name used to identify a particular network.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual 4.2 - Channel Survey (Utilisation) Channel Utilisation gives a visual display of how busy the current channel is over a given time period. Channel Utilisation is made up of 3 components: transmissions made by this radio; data received by this radio; and noise or interference that this radio can hear. These 3 components may also be viewed individually on the Custom Survey page.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual 3. The connected modem has detected RF noise or interference. Channel Survey shows the Channel Utilisation and Noise Floor Graph with 1 second, 1 minute and 1 hour periods. Figure 62 - Channel Utilization The first screen shows a percent of the overall radio traffic on the channel that is currently being used. Figure 63 - RX Noise Floor The next screen shot shows the radio receive noise floor for the last 60 seconds.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual The third screen shot shows the average Channel utilisation for each minute up to one hour. It will also give a running average for the total number of minutes up to 59 minutes. Figure 65 - RX Noise Floor Minutes The next screen shot shows the running radio receive noise floor average for each minute up to 59 minutes.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual Example One. Chart one shows the amount of data that is being transmitted over a radio link and chart two shows the amount of data being received from all sources (Interference and other noise). We can see from this that there is very little outgoing data but you can see a constant stream of data being received. Figure 66 - Custom Survey 1 Page 83 www.weidmuller.com Rev 2.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual Example Two. In the second example we can see that chart one shows the amount of Data being received from Wi-Fi devices and chart two shows the amount of other noise that is being received. From this you can see that in the last 60 second period there was a 20 second interval with around 60-80 % channel Utilisation in this case from another 900 MHz device.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual 4.4 - Throughput Test The performance of a wireless link is best measured in terms of the maximum throughput that can be achieved. The recommended method of measuring throughput is with the "Iperf" utility. Iperf has client and server functionality, where the server waits for a client connection.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual that it has been enabled and the module has been reset. Each press of the “Measure Throughput” button will perform a TCP throughput test of 10 second duration. You will see the message “Performing Iperf Test” text and if you look at the modules you will see the TX/Link & RX Led’s flashing very fast as it performs the test.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual 4.5 - Statistics Figure 73 - Statistics The Statistics webpage is used for advanced debugging of WI-MOD-945-E. This webpage details the state of the WIMOD-945-E and performance information. This page is typically useful to WEIDMULLER technical support personnel in diagnosing problems with the module. Note that when updating the Statistics webpage, it is necessary to hold down the key while pressing the refresh button.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual RX Failed due to bad CRC: This can be from any AP not only your own. If other Wi-Fi is around then this number could be high due to other Encryption keys, weak signal etc. RX Failed / RX Antenna Profile = RX Frame Error Rate (Note this can be high due to other wireless devices around.) Broadcast Notes: When Broadcast message is sent from CL – AP the AP will always ACK the Client.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual 4.7 - Testing Radio Paths Connection and Signal Strength The general procedure for radio range testing a link is fairly simple. Configure two units to form a link using automatic radio rates. Install the Access Point at a fixed location. Take a laptop computer and the Client to each of the remote locations, and analyse the link using the Connectivity webpage.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual The Radio Path Test feature should not be enabled on a live system; it is intended for testing only. Radio Path Test Settings Enable Radio Path Test Enables or disables the Radio Path Test.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual Figure 75 - Throughput Test LEDS RS-485 Led is showing a green indication which means the Throughput to the Access Point is greater than 10 Mbps. If the Led showed a Red indication this would mean the throughput is between 10Mbps & 4 Mbps.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual 4.8 - Remote Configuration Because a module configuration is viewed and changed in a web format (which uses TCP/IP protocol), you can view or change the configuration of a remote module via the wireless link, provided the remote module already have a wireless link established to the local WI-MOD-945-E.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual 4.9 - Internal Diagnostic Modbus Registers There are a number of internal diagnostic registers that can be accessed via Modbus TCP/RTU that will help with analysing and diagnosing the radio network. To access these register the Modbus Server will need to be enabled and a Modbus Server address will need to be configured (See 3.14 - “Modbus I/O Transfer” for details on how this is done).
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual Statistic Registers Register Module 4500 Both Total data packets received on the interface 4502 Both Received frames with antenna 1 (TX/RX) 4504 Both Received frames with antenna 2 (RX) 4506 Both Receiver / default antenna switches 4508 Both Receive message failed due to bad CRC 4510 Both Receive message failed due to decryption 4512 Both Receive message failed due to MIC failure 4514 Both Receive message f
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual 4.10 - Utilities “Ping” Ping is a basic Internet program that lets you verify that a particular IP address exists and can accept requests. Ping is used diagnostically to ensure that a host computer you are trying to reach is actually operating. If, for example, a user can’t ping a host, then the user will be unable to send files to that host. Ping operates by sending a packet to a designated address and waiting for a response.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual ”Ipconfig” “ipconfig” can be used to show your current TCP/IP information, including your address, DNS server addresses, adapter type and so on. Figure 79 - Ipconfig In the above example ipconfig was entered in the command prompt. The reply back shows the PC’s IP address, Subnet mask and the gateway it is connected to. Other ipconfig commands will return back more information.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual In the example below a routing rule needs to be entered into the Network A’s PC which will allow access between Network A and Network B. This is can be entered at the command prompt as per instruction below. Route PRINT will show all active routes on PC, Route ADD will add a routing table to network, route DELETE will delete the unwanted routing table route CHANGE modifies an existing route.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual CHAPTER 5 - SPECIFICATIONS Transmitter/Receiver Frequency 902 – 928MHz(1) 915 - 928MHz(2) Transmit Power 250mW (+24dBm) to 630mW (+28dBm) (Data rate and country specific) Transmission Direct Sequence Spread Spectrum (DSSS) Modulation Orthogonal Frequency Data Modulation (OFDM) Receiver Sensitivity -95dBm @ 0.25Mbps - 71dBm @ 54Mbps (8% FER) Channel Spacing 9 x 1.25MHz; 9 x 2.
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual Security Data Encryption – 802.11i With CCMP 128bit AES Support for 802.
Weidmuller Technologies Wireless Ethernet Modem & Device Server 945U-E User Manual Appendix A - Firmware Upgrades Determine which firmware version is present in the module to be upgraded by viewing the index webpage of the module. Firmware versions 1.0.3 and later may be upgraded via the configuration web pages. This upgrade can be done locally with a PC connected directly to the module, or remotely over a working radio link.
Weidmuller Technologies Wireless Ethernet Modem & Device Server 945U-E User Manual Appendix B - GLOSSARY ACK Acknowledgment. Access Point An access point connects wireless network Stations (or Clients) to other Stations within the wireless network and also can serve as the point of interconnection between the wireless network and a wired network. Each Access Point can serve multiple users within a defined network area. Also known as a base station.
Weidmuller Technologies Wireless Ethernet Modem & Device Server 945U-E User Manual Dial-up A communication connection via the standard telephone network, or Plain Old Telephone Service (POTS). DNS Domain Name Service A program that translates URLs to IP addresses by accessing a database maintained on a collection of Internet servers. The program works behind the scenes to facilitate surfing the Web with alpha versus numeric addresses. A DNS server converts a name like mywebsite.
Weidmuller Technologies Wireless Ethernet Modem & Device Server 945U-E User Manual the Internet. An IP address has two parts: an identifier of a particular network on the Internet and an identifier of the particular device (which can be a server or a workstation) within that network. IPX-SPX Internetwork Packet Exchange, a networking protocol used by the Novell NetWare operating systems. Like UDP/IP, IPX is a datagram protocol used for connectionless communications.
Weidmuller Technologies Wireless Ethernet Modem & Device Server 945U-E User Manual proxy server is able to prevent direct communication between two or more networks. The proxy server forwards allowable data requests to remote servers and/or responds to data requests directly from stored remote server data. RJ-45 Standard connectors used in Ethernet networks.
Weidmuller Technologies Wireless Ethernet Modem & Device Server 945U-E User Manual WAN Wide Area Network. A communication system of connecting PCs and other computing devices across a large local, regional, national or international geographic area. Also used to distinguish between phone-based data networks and Wi-Fi. Phone networks are considered WANs and Wi-Fi networks are considered Wireless Local Area Networks (WLANs). WEP Wired Equivalent Privacy. Basic wireless security provided by Wi-Fi.
Weidmuller Technologies Wireless Ethernet Modem & Device Server 945U-E User Manual Appendix C - Power Conversion Power Conversion dBm to mW Conversion Watts dBm Watts dBm 10 mW 10 dB 200 mW 23 dB 13 mW 11 dB 316 mW 25 dB 16 mW 12 dB 398 mW 26 dB 20 mW 13 dB 500 mW 27 dB 25 mW 14 dB 630 mW 28 dB 32 mW 15 dB 800 mW 29 dB 40 mW 16 dB 1.0 W 30 dB 50 mW 17 dB 1.3 W 31 dB 63 mW 18 dB 1.6 W 32 dB 79 mW 19 dB 2.0 W 33 dB 100 mW 20 dB 2.5 W 34 dB 126 mW 21 dB 3.
Weidmuller Technologies Wireless Ethernet Modem & Device Server 945U-E User Manual Appendix D - Iperf Throughput Test - Ext This Appendix shows how to set up and use the Iperf application to test the throughput of Ethernet Modems. Iperf is a tool used to measure the throughput and quality of a network link. Another Application called Jperf can also be used which gives a graphical interface for all results.
Weidmuller Technologies Wireless Ethernet Modem & Device Server 945U-E User Manual Figure 84 This will run a test over the Wi-Fi Link to the Server PC and report back results as seen in Figure 85. These results show the Bandwidth (Throughput) of the test as 16.2Mbits/sec. Figure 85 Using the Theoretical throughput calculations in Table 1 you can compare the results with the measured to give an indication of the difference between expected and measured.
Weidmuller Technologies Wireless Ethernet Modem & Device Server 945U-E User Manual JPerf Application Jperf is a graphical interface that runs over the top of Iperf. It will display a graph result from the Iperf test. To run Jperf open a CMD prompt and change to the “jperf-2.0.2: directory and run the “Jperf” application as shown in Figure 86. The CMD screen will disappear and the Jperf Screen will appear as seen in Figure 87.
Weidmuller Technologies Wireless Ethernet Modem & Device Server 945U-E User Manual Appendix E - GNU Free Doc License Version 2, June 1991 Copyright (C) 1989, 1991 Free Software Foundation, Inc. 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. Preamble The licenses for most software are designed to take away your freedom to share and change it.
Weidmuller Technologies Wireless Ethernet Modem & Device Server 945U-E User Manual Program, and copy and distribute such modifications or work under the terms of Section 1 above, provided that you also meet all of these conditions: a) You must cause the modified files to carry prominent notices stating that you changed the files and the date of any change.
Weidmuller Technologies Wireless Ethernet Modem & Device Server 945U-E User Manual distributing or modifying the Program or works based on it. 6. Each time you redistribute the Program (or any work based on the Program), the recipient automatically receives a license from the original licensor to copy, distribute or modify the Program subject to these terms and conditions. You may not impose any further restrictions on the recipients' exercise of the rights granted herein.
Weidmuller Technologies Wireless Ethernet Modem & Device Server 945U-E User Manual YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED Page 113 www.weidmuller.
Weidmuller Technologies Wireless Ethernet Modem & Device Server 945U-E User Manual Page 114 www.weidmuller.com Rev 2.
