915U-2 Wireless I/O User Manual ELPRO Technologies, 9/12 Billabong Street, Stafford Qld, 4053 Australia. Tel: +61 7 33528600 Fax: +61 7 33528677 Email: sales@elprotech.com Web: www.elprotech.com ELPRO Support Help-line America (866) 7134409 Rest of the world +617 3352 8624 V1.1.
915U-2 Wireless I/O Page 1 Thank you for your selection of the 915U-2 I/O Module. We trust it will give you many years of valuable service. ATTENTION! Incorrect termination of supply wires may cause internal damage and will void warranty. To ensure your 915U-2 module enjoys a long life, double check ALL your connections with the user manual before turning the power on. CAUTION: To comply with FCC RF Exposure requirements in section 1.
915U-2 Wireless I/O Page 2 GNU Free Documentation Licence: Copyright (C) 2009 ELPRO Technologies. ELPRO Technologies is using a part of Free Software code under the GNU General Public License in operating the “915U-2” product. This General Public License applies to most of the Free Software Foundation‟s code and to any other program whose authors commit by using it. The Free Software is copyrighted by Free Software Foundation, Inc. and the program is licensed “As is” without warranty of any kind.
915U-2 Wireless I/O Page 3 FCC Notice: This 915U-2 module uses the “E2_900M Wireless Data Modem” radio and complies with Part 15.247 of the FCC Rules. Operation is subject to the following two conditions: This device may not cause harmful interference This device must accept any interference received, including interference that may cause undesired operation. 915U-2 Radio Telemetry Unit must be installed in a suitable enclosure that provides mechanical, shock and fire hazard protection.
915U-2 Wireless I/O Page 4 Hazardous Location Notices: This device complies with Ex nL IIC. T4A -40 C <= Ta <= +60 C II 3G WARNING: EXPLOSION HAZARD. Do not disconnect equipment unless power has been switched off or the area is known to be non-hazardous. This equipment is suitable for use in Class I, Division 2, Groups A, B, C and D; Tamb -40˚C to +60˚C or non-hazardous locations only.
915U-2 Wireless I/O Page 5 IMPORTANT Notice: ELPRO products are designed to be used in industrial environments, by experienced industrial engineering personnel with adequate knowledge of safety design considerations. ELPRO radio products are used on unprotected license-free radio bands with radio noise and interference.
915U-2 Wireless I/O Page 6 Limited Lifetime Warranty, Disclaimer, and Limitation of Remedies ELPRO products are warranted to be 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 ELPRO, ELPRO will replace the product with an equivalent product if an equivalent product is available.
915U-2 Wireless I/O Page 7 TABLE OF CONTENTS CHAPTER 1 - INTRODUCTION .......................................................................................... 12 1.1 Overview ...................................................................................................................................................... 12 1.2 Module Structure ......................................................................................................................................... 14 1.
15U-2 Wireless I/O Page 8 3.2.2 Boot Sequence “PWR” LED Indications ................................................................................................ 37 3.2.3 Input / Output Indications ....................................................................................................................... 38 Digital Inputs ............................................................................................................................................... 38 Digital Outputs .......
915U-2 Wireless I/O Page 9 4.3.3 Radio Settings ........................................................................................................................................ 65 4.3.4 Mesh Fixed Routes ................................................................................................................................ 66 Example #1 .................................................................................................................................................
915U-2 Wireless I/O Page 10 6.1.7 I/O store for a 115S-13 Expansion I/O module ...................................................................................... 96 APPENDIX D: MODBUS ERROR CODES ....................................................................... 97 APPENDIX E: MODULE I/O REGISTERS ........................................................................ 98 6.1.8 115S Serial Expansion Modules I/O Registers ...........................................................................
915U-2 Wireless I/O Page 11 TABLE OF FIGURES Figure 1 – Module Structure................................... 14 Figure 33- Invalid Register State ............................56 Figure 2 – Power Connectors ................................ 16 Figure 34 - Modbus TCP/RTU ................................58 Figure 3 – Supply Connections .............................. 16 Figure 35 - Expansion I/O .......................................59 Figure 4 – Expansion I/O power & RS485 .............
Page 12 915U-2 Wireless I/O Chapter 1 - Introduction 1.1 Overview The 915U-2 range of I/O modules has been designed to provide standard “off-the-shelf” telemetry functions, for an economic price. Telemetry is the transmission of data or signals over a long distance via radio or twisted-pair wire cable. Although the 915U-2 Series is intended to be simple in its application, it provides many sophisticated features, which will be explained in the following chapters.
915U-2 Wireless I/O Page 13 The 915U-2 modules transmit the input/output data using radio or Ethernet. The data frame includes the "address" of the transmitting module and the receiving module, so that each transmitted message is acted on only by the correct receiving unit. Each message includes error checking to ensure that no corruption of the data frame has occurred due to noise or interference.
Page 14 915U-2 Wireless I/O 1.
915U-2 Wireless I/O Page 15 (transistor output). Each I/O point is linked to separate I/O registers within the I/O Data Store. There are also a number of Internal I/O that can be accessed from the I/O Data Store. These inputs can be used to interpret the status of a single module or an entire system Battery voltage – The battery terminal voltage displayed as an Analog value.
Page 16 915U-2 Wireless I/O Chapter 2 - Installation 2.1 General All 915U-2 Series modules are housed in a plastic enclosure with DIN rail mounting, providing options for up to 14 I/O points, and separate power & communications connectors. The enclosure measures 170 x 150 x 33 mm including connectors. The antenna protrudes from the top 2.
915U-2 Wireless I/O Page 17 If utilising option 1 above and the Primary Supply fails the Battery Supply will continue to power the module without interruption to the operation. The Supply and Battery charging terminals are hosted on the 4-way connector on the bottom edge of the module labelled “Supply” Both Supply and Battery connections have reverse polarity and over voltage protection. The power supply should be CSA Certified Class 2 approved for normal operation.
Page 18 915U-2 Wireless I/O 2.2.2 Expansion I/O Supply To allow increased I/O Capacity, a second 4-way terminal labelled “Expansion I/O” provides a +12 Volt supply (up to 1A) and RS485 communications for any 115S serial expansion I/O modules.
915U-2 Wireless I/O Page 19 30005 Local Supply voltage (8-40V scaling) 30006 Local Battery voltage (8-40V scaling) 30007 Local 24V loop voltage (8-40V scaling) – Internally generated +24V supply used for analog loop supply. Maximum Current limit is 100mA 30008 115S Supply Voltage (8-40V scaling) 38005 – 38008 Floating Point Registers, also indicate the Supply voltage, Battery Voltage, +24V Supply and 115S Supply voltages but in a voltage scale.
Page 20 915U-2 Wireless I/O 2.3 Radio The following radio variants are available in the 915U-2 dependent on the country of operation. 2.3.1 900 MHz Spread Spectrum radio The radio operates in the 902-928 MHz ISM band which is split into two sub-bands, 902-914 MHz (Low) and 915–928 MHz (High). In America and Canada, the 915U-2 uses both high and low sub-bands - however in other countries, i.e. Australia only the 915-928MHz band is available (Some countries use fewer channels, e.g. New Zealand).
915U-2 Wireless I/O Page 21 2.4 Antenna The 915U-2 module will operate reliably over large distances. The distance that can be reliably achieved will vary with each application and depend on the type and location of antennas, the degree of radio interference, and obstructions (such as hills or trees) to the radio path. Typical reliable distances are detailed below, however longer distances can be achieved if antennas are mounted in elevated locations – such as on a hill or on a radio mast.
Page 22 915U-2 Wireless I/O The net gain of the antenna/cable configuration is determined by adding the antenna gain and the cable loss. For example, a 6 element Yagi with 70 feet (20 metres) of Cellfoil cable has a net gain of 4dB (10dB – 6dB).
915U-2 Wireless I/O Page 23 We recommend that the connection be taped, firstly with a layer of PVC Tape, then with a vulcanising tape such as “3M 23 tape”, and finally with another layer of PVC UV Stabilised insulating tape. The first layer of tape allows the joint to be easily inspected when trouble shooting as the vulcanising seal can be easily removed. Where antennas are mounted on elevated masts, the masts should be effectively earthed to avoid lightning surges.
Page 24 915U-2 Wireless I/O Yagi antennas. A Yagi antenna provides high gain in the forward direction, but lower gain in other directions. This may be used to compensate for coaxial cable loss for installations with marginal radio path. The Yagi gain also acts on the receiver, so adding Yagi antennas at both ends of a link provides a double improvement. Yagi antennas are directional. That is, they have positive gain to the front of the antenna, but negative gain in other directions.
915U-2 Wireless I/O Page 25 2.5 Connections 2.5.1 Bottom panel connections B A - + EXPANSION 100M GND LINK ETHERNET USB RS232 BAT SUP SUP + + SUPPLY Figure 9 – Bottom Panel Connections Ethernet port The 915U-2 modules provides a standard RJ-45 Ethernet port compliant to IEEE 802.3 10/100 BaseT. This port provides full access to the module, including configuration, diagnostics, log file download and firmware upload, of both the local and remote units.
Page 26 915U-2 Wireless I/O stop bit which match the 115S serial expansion modules defaults. This port Supports MODBUS protocol. The RS-485 port terminal is hosted on the 4 way “Expansion” connector on the bottom edge of the module. An on-board RS485 termination resistor provides line attenuation for long runs. As a general rule moreover, a termination resistors should be placed at each end of the RS485 cable.
915U-2 Wireless I/O Page 27 USB Host port This port is a USB Host (Master port), which can interface with USB storage devices for data logging (Future) and for upgrading the module Firmware – See section 4.3.6 “System Tools” for details on how this is done. Dipswitches The Dipswitches are used to select a number of functions within the module; the table below indicates the different switch positions. Dipswitches 1 to 2 – Selection for measuring Current or Voltage on Analog Input 3.
Page 28 915U-2 Wireless I/O Front panel connections D1 D2 D3 D4 D5 D6 D7 D8 GND +24V AI 1 + AI 1 - AI2 + AI2 - AI3 AI4 AO1 + AO2 GND +24V + Figure 12 – Front Panel Connections The 915U-2 front panel provides connections for the following Eight Digital Input /Output (DIO1-8). Two 12 bit, 0.1% accuracy differential analog inputs. Two single ended 12 bit, 0.1% accuracy analog inputs. Two 13 bit, 0.1% accuracy current sourcing analog outputs.
915U-2 Wireless I/O Page 29 2.5.3 Digital Inputs Each digital I/O channel on the 915U-2 can act as either an input or an output. The input/output direction is automatically determined by the connections and configuration of the I/O. If you have an I/O channel wired as an input but operate the channel as an output. No electrical damage will occur however, the I/O system will not operate correctly.
Page 30 915U-2 Wireless I/O 2.5.4 Pulsed Inputs The 915U-2 supports 8 x digital signals, of which inputs 1 to 4 can be used as pulsed inputs. The maximum pulse frequency is 50 KHz for Input 1 & 2 and 1 KHz for Input 3 & 4. Digital/Pulsed inputs are suitable for TTL signal Level, NPN-transistor switch devices or voltage-free contacts (relay/switch with debounce capacitor).
915U-2 Wireless I/O Page 31 2.5.5 Digital Outputs (Pulsed Outputs) Digital outputs are open-collector transistors and are able to switch loads up to 30VDC, 200mA. The 8 digital outputs share the same terminals as the digital input. These terminals are marked DIO1-8. Discrete Input / Output Used as output 915U-2 DIO1 DIO2 DC Load + Max 30VDC 0.2A _ V- Common Figure 15 – Digital Output Wiring When active, the digital outputs provide a transistor switch to EARTH (Common).
Page 32 915U-2 Wireless I/O Figure 16 – Digital Output Failsafe Times The Fail Safe Time is the time the output counts down before activating a Fail Safe state. Normally this would be configured for a little more than twice the update time of the mapping that is sending data to it. This is because the Fail Safe Timer is restarted whenever it receives an update. If we send two successive updates and fail to receive both of these messages then the timer counts down to zero and activates the Failsafe state.
915U-2 Wireless I/O Page 33 2.5.6 Analog Inputs The 915U-2 provides two floating differential analog inputs and two grounded singleended analog inputs. Analog Input 1 & 2 will automatically measures Current (0-20 mA) or Voltage (0-25V) depending on what is connected to the input. Analog input 3 & 4 must be configured to measure Current (0-20mA) or Voltage (0-5V) via the DIP switches under the Side Access Configuration Panel (See Section 2.5.2 ).
Page 34 915U-2 Wireless I/O Single Ended Current Inputs (AIN 3 & 4 only) Single-ended current input mode is useful if the sensor loop is grounded to the 915U-2 module. Devices can be powered from the 24V Analog Loop Supply (ALS) generated internally from the module. The Dip Switches are used to determine if the inputs will be current or voltage.
915U-2 Wireless I/O Page 35 Single Ended Voltage Inputs All analog inputs can be setup to read voltage. If using Analog input 1 & 2 connect the voltage source across the positive terminal of the input and Common. If using Analog input 3 & 4 then connect across the input terminal and Common. Note: Default scaling gives 0-25V for 4-20mA output on Analog 1 and 2. Default scaling for analog 3 and 4 gives 0-5V for 4-20mA output. For Voltage input on analog 3 and 4 set both Dip Switches to the “Off” position”.
Page 36 915U-2 Wireless I/O 2.5.7 Analog Outputs The 915U-2 module provides two 0 - 24 mA DC analog outputs for connecting to instrument indicators for the display of remote analog measurements. The 915U-2 Analog outputs are a sourcing output and should be connected from the analog output terminal through the device or indicator to Common. See diagram for connections.
915U-2 Wireless I/O Page 37 Chapter 3 - Operation 3.1 Overview The 915U-2 range of I/O modules has been designed to provide standard “off-the-shelf” telemetry functions, at an economic price. Telemetry is the transmission of data or signals over a long distance via radio or twisted-pair wire cable. 3.2 Indications When power is initially connected to the module it will perform some internal setup and diagnostics checks to determine if the module is operating correctly.
Page 38 915U-2 Wireless I/O 3.2.
915U-2 Wireless I/O Page 39 3.2.4 Ethernet Indications On the end plate, the Ethernet socket incorporates two LED‟s These LEDs indicating the Ethernet status 100M LINK ETHERNET (HUB) Page 39 100M – GREEN LED indicates presence of a 100 Mbit /s Ethernet connection, with a 10 Mbit /s connection the LED will be off. LINK – ORANGE indicates an Ethernet connection and LED briefly flashes “off” with activity.
Page 40 915U-2 Wireless I/O 3.3 System Design 3.3.1 Radio Channel Capacity Messages sent on a cable link are much faster than on a radio channel, and the capacity of the radio channel must be considered when designing a system. This becomes more important as the I/O size of a system increases. The modules are designed to provide “real-time” operation or Change of State (COS). When an input signal changes, the change message is sent to the output.
915U-2 Wireless I/O Page 41 A radio path may act reliably in good weather, but poorly in bad weather - this is called a “marginal” radio path. If the radio path is more than 20% of the maximum reliable distance (see Specification section for these distances), we recommend that you test the radio path before installation. Each 915U-2 module has a radio path-testing feature refer to Section 5.2 ”Connectivity” of this manual.
Page 42 915U-2 Wireless I/O 3.3.5 Indicating a Communications Problem There are two ways to indicate communications problems. Fail-to-transmit alarm The first method is to setup a communications indication on a register of your choice when configuring a mapping. This can be done using an existing mapping (do not need to setup a special comms mapping).
915U-2 Wireless I/O Page 43 Note: Radio must have a valid mapping for the remote address and the mapping must have the „ACK‟ enabled. 3.3.7 Testing and Commissioning We recommend that that the system is fully tested on the bench before installation. It is much easier to find configuration problems on the bench when the modules are next to each other as opposed to being miles apart. When the system is configured and you are happy that it all works, backup the configurations of all the modules.
Page 44 915U-2 Wireless I/O Chapter 4 - Configuration 4.1 First time Configuration The 915U-2 has a built-in web server, containing web pages for analysing and minor modification to the module‟s configuration. The configuration can be accessed using any web browser however we recommend using Microsoft® Internet Explorer 8. 4.1.1 Default IP Address The default factory IP Address of the 915U-2 is 192.168.0.
915U-2 Wireless I/O Page 45 Open “Network Settings” on your PC under Control Panel. The following description is for Windows XP - earlier Windows operating systems have similar settings. Open “Properties” of Local Area Connection. Select Internet Protocol (TCP/IP) and click on Properties. On the General tab, enter IP address 192.168.0.1, Subnet mask 255.255.255.
Page 46 915U-2 Wireless I/O You can then open Internet Explorer and ensure you can connect to the IP address selected. If the PC uses a proxy server, ensure that Internet Explorer will bypass the Proxy Server for local addresses. This option may be modified by opening Tools -> Internet Options -> Connections Tab > LAN Settings->Proxy Server -> bypass proxy for local addresses. Enter the default IP address for the 915U-2 https://192.168.0.1XX where XX is the last two digits of the serial number.
915U-2 Wireless I/O Page 47 4.1.3 Over the Air Configuration The WIBMesh 915U-2 modules communicate using Standard Ethernet Protocols which make it possible to connect to other 915U-2 modules within the radio network for over the air diagnostics or configuration changes. A little forethought when designing the system is required as some minor configuration settings are needed to implement the over air configuration. The Multi point to point system shown below in Figure 26 will require the following.
Page 48 915U-2 Wireless I/O 4.2 Module Configuration Module configuration can be done using the MConfig utility for Meshing and Econfig for Legacy or via inbuilt web pages. We recommend the software be used as the primary config as is easier to use and simplifies the overall configuration. It is also project based which means you can group a number of modules in one configuration file.
915U-2 Wireless I/O Page 49 4.2.2 Mappings Mappings are configured by selecting the “Units”, “Mappings” then “Add”. Figure 29 - Mappings There are three types of mappings, Write, Gather/Scatter and Read Mapping. Write Mapping A multi I/O mapping that allows multiple sequential values to be sent in one message. If mapping analog values the maximum I/O count is 64 however if mapping digitals it can be as many as 1024 as the digitals values are packed into 16 bit words for transmission.
Page 50 915U-2 Wireless I/O Figure 30 - Gather/Scatter Mapping 4.2.3 Address Map The I/O data store provides storage for all I/O data, either local or received from the system. The I/O Store provides eight different “data files”, two bit, two word, two long-word and two floating point files. In addition each file type supports both inputs and outputs of the device and data storage for the gateway function. These files are mapped into the address range as described below.
915U-2 Wireless I/O Page 51 The following table shows the basic onboard I/O available in a standard 915U-2 module with no expansion I/O connected. For a more detailed I/O map (showing the full register range), see Appendix B: “I/O Store Registers” at the end of the manual. 4.2.4 Standard 915U-2 I/O (Basic I/O) Address 0001 - 0008 Input / Output Description Local DIO1 – DIO8 (as Outputs) 10001 - 10008 Local DIO1 – DIO8 (as inputs) 10009 - 10020 Setpoint status from Analog inputs 1 through 12.
Page 52 915U-2 Wireless I/O Digital Outputs Name – The inputs can be named to help with configuration or use the default, up to 30 characters including spaces. Failsafe Time (sec) – The Fail Safe Time is the time the output needs to count down before activating the failsafe state. Receiving an update or a COS message will reset the Fail Safe Timer back to its starting value.
915U-2 Wireless I/O Page 53 • Deadband (Default) - If the Analog Input is greater than the Upper Set point, the set-point status will be active (on, “1”). The setpoint will reset (off, “0”) when the Analog Input is less than the Lower Set Point. Note that the Upper Set Point must always be higher than the Lower Set Point.
Page 54 915U-2 Wireless I/O The default serial parameters of the RS485 port are 9600, N, 8, 1 which match the defaults of the 115S serial expansion modules. The parameters can be changed, to increase poll speeds in larger systems however the serial modules will need to match that of the 915U-2 RS485 port. Also if more than 3 serial expansion modules are added the “Maximum Connections” for the RS485 port on the “Serial” page will need to be adjusted.
915U-2 Wireless I/O Page 55 Figure 31 - Expansion I/O Select the following parameters Name - The Module can be named to help with configuration or use the default, up to 30 characters including spaces. Device ID – Select the Address of the expansion I/O module. Address must be the same as the address on the rotary switch on the bottom of the 115S expansion I/O module. Device Type – Select the module type from the drop down list. 4.2.
Page 56 915U-2 Wireless I/O If after 600 seconds, the module still has not received an update from the other module, register 30501 will be set to the “Fail Value” (in this case 0). If the “Invalidate on Fail” were ticked, the value would be set to a null or invalidated value (~). If this register was mapped to some other location the mapping would be inhibited until the” Invalid” value was updated with a real value. The maximum number of Fail Safe blocks you can have is 50.
915U-2 Wireless I/O Page 57 (The reason is so the module does not send every single bit change of an analog value and subsequently saturate the radio channel with unwanted change messages. If a lower sensitivity is required then the above blocks can be adjusted and up to 48 more Sensitivity Blocks can be configured for different registers or different values. Register Group – Selects the register range. First Register– Selects the actual register number within the register group range.
Page 58 915U-2 Wireless I/O 4.2.9 Serial Configuration The 915U-2 has an RS-232, and an RS-485 port for serial communications. These ports may be used to connect external Modbus RTU devices via the Modbus TCP to RTU Gateway and or ELPRO serial expansion I/O modules. Select the Operating Mode and the normal serial parameters, Baud Rate, Format, Flow Control, etc from the drop down lists.
915U-2 Wireless I/O Page 59 Serial parameters can be adjusted for compatibility or faster serial performance by adjusting the rates and format and then selecting the “Save and Activate” Button. Serial port parameters will also need to be changed on the expansion I/O module by using the 115S Configuration Utility which can be downloaded from the ELPRO Technologies Website (www.elprotech.
Page 60 915U-2 Wireless I/O onboard Modbus TCP Server. Up to 32 separate connections to the Modbus TCP Server are supported. Modbus TCP Client (Modbus Master) enables the 915U-2 to connect to one or more Modbus TCP Servers (Slaves). All Modbus Master Messages are directed either to/from the onboard I/O registers depending on configuration (described below).
915U-2 Wireless I/O Page 61 The Modbus Client Scan rate is set to 1000msec and each mapping is configured with a response timeout (in this case 1000msec). This time is how long the master will wait for a response before indicating the failure on the Comms Fail Register. (In this example register 5-8 are register for local digital outputs 5-8) *Note: The IP address 127.0.0.1 is a standard loopback address that represents “localhost” (this computer).
Page 62 915U-2 Wireless I/O 4.3 Web based Configuration Some configuration options are available by web based configuration only. If utilising these option they will need to be accessed using a web browser and connecting to the modules IP Address, i.e. 192.168.0.XXX 4.3.
915U-2 Wireless I/O Page 63 Multipath RSSI algorithm should be enabled when the installation is in an environment that is known to have multipath fading. Enable Multipath RSSI Algorithm These installations are typically where units are installed inside buildings or in environment where antenna do not have uninterrupted line of sight or have large metallic objects that are close to the antennas.
Page 64 915U-2 Wireless I/O 4.3.2 IP Routing When a 915U-2 receives an IP frame that is destined for an IP address on a different network, it checks to see if the network address matches one of its own interfaces (i.e. hard-wired Ethernet, or Radio) and forwards the frame appropriately. However, if the IP network address does not match the network address of any of its interfaces, the 915U2 will forward the frame to its default gateway.
915U-2 Wireless I/O Page 65 4.3.3 Radio Settings Select the “Radio” Menu to change the following configuration parameters. If a change is made, you need to select “Save Changes” to retain the changes. Changes will not take effect until the unit is reset.
Page 66 Disable Rx LNA Save Changes and Reset. 915U-2 Wireless I/O Check box to disable the LNA (Low Noise Amplifier) Reduces the Receive Sensitivity by about 15dB, used during Demos, Bench testing, or close communication paths, etc. Save settings to non-volatile memory, and reboot 915U-2. Once the module has completed the reboot sequence, all changes are in effect. 4.3.4 Mesh Fixed Routes In large radio systems there will often be a number of radios that will act as Repeaters for the other radios.
915U-2 Wireless I/O Page 67 Figure 40 - Mesh Fixed Route #1 The Network Diagram above shows a typical network with mesh fixed routes. Normally a meshing network will automatically learn the routes within a network and setup appropriate communication paths to the destination. When manually configuring these routes all communication paths need to be setup by using Mesh Fixed Routing Rules.
Page 68 915U-2 Wireless I/O Figure 43 – Mesh Fixed Route #2 Routing Rules Figure 43 shows the routing rules for the network diagram Figure 42- Mesh Fixed Route #2” above The first route shows the destination and next addresses are both 10.0.0.1 as it‟s a single hop. Because the destination is a Gateway on an external network the IP Gateway must be enabled. The second routing rules shows the Destination (192.168.1.
915U-2 Wireless I/O Page 69 4.3.5 Module Information Web Page This Web 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 915U-2. Figure 44 – Module Information Username default = “user” Password default = “user” Device Name Owner Contact Description Location Configuration Version: Page 69 Configuration of Username. This is the username used to access the configuration on the 915U-2.
Page 70 915U-2 Wireless I/O 4.3.6 System Tools Web page Figure 45 – System Tools System Log File Logs system instructions, etc to the screen where the log screen can be saved to a file. Not normally used, however maybe used by Technical Support to diagnose problems. The “Clear System Log” clears the log screen. Reading Configuration File Reads the module configuration into an XML file, which can be saved by selecting “Save As” from the File menu.
915U-2 Wireless I/O Page 71 Instructions for upgrading Firmware are as follows. 1. You will need valid ELPRO 915U-2 Firmware upgrade files. Contact ELPRO Technologies for the latest version. Files must not be renamed, compressed, or zipped. 2. You will also need a dedicated USB Flash drive which needs to be formatted and completely free of any other file. Copy the firmware files to the Flash drive making sure they are in the root of the drive and not in a sub directory. 3.
Page 72 915U-2 Wireless I/O Product Reconfiguration Changes the operating mode between WIBMesh and WIBNet. WIBNet is a compatibility mode that will allow communications between the 915U-2 and earlier ELPRO E-Series Telemetry units, e.g. 905U-1, 2, 3, 4, C, G, K, L, etc. Figure 47 - Product Reconfiguration The Dropdown box has two selections, Meshing Mode - Standard Elpro WIBMesh and is the format that the module will be in when it arrives from the factory.
915U-2 Wireless I/O Page 73 4.3.7 Feature Licence Keys Web Page Allows the module to be upgraded with enhanced features or upgraded to a more advanced model .i.e. enabling the Modbus option. The Feature Licence unlock codes are purchasable by contacting ELPRO Technologies or your local distributor.
Page 74 915U-2 Wireless I/O Chapter 5 - Diagnostics 5.1 IO Diagnostics Figure 49- I/O Diagnostics Selecting this option from the main screen will allow some basic reading and writing of the I/O store registers within the module. To read a register location, enter an address location, e.g.
915U-2 Wireless I/O Page 75 Modbus Error Registers Each of the Expansion I/O modules have diagnostics registers that can indicate any Modbus Errors, Codes, Counts, etc.
Page 76 915U-2 Wireless I/O which indicates no direct link to that station. The LQI is a logarithmic representation of the number of bit errors in the frame that were corrected by the Forward Error Correction algorithm. Each data bit is encoded with 7 forward error correction bits, so a 100 byte frame contains 100 * 8 bits / byte * 7 FEC bits/bit = 5600 bits.
915U-2 Wireless I/O Page 77 5.3 Neighbour List (WibMesh) Figure 51 – Neighbour List Shows a current list of module IP addresses that the radio can hear. Shows the time since it was last heard from and the calculated RSSI value. This page is useful for discovering what signal levels the module has to other sites within the system including ELPRO modules on different system addresses. The list will display all received radio messages, even if the message is not directly communicating to it. 5.
Page 78 915U-2 Wireless I/O fading issue, enter the radio IP address of the neighbour you wish to view and press “Get Graph”. After the units have been running for a few minutes, and passing radio data, the graph will fill with RSSI readings across all of the radio channels in use. If the graph is approximately flat, i.e. Figure 52 - Neighbour RSSI above then there is no multipath fading between these units.
915U-2 Wireless I/O Page 79 5.5 Network Diagnostics (WibMesh) Figure 54 – Network Diagnostics Network Diagnostics allows you to check the communications path to other modules within the system. There are two options for checking the communications. Ping Ping is a standard Network instruction that sends out a small data probe to the IP address configured letting you know if you have a communication path or not.
Page 80 915U-2 Wireless I/O Trace Route Because the modules use the AODV protocol which is a routing protocol capable of finding its own path through the network it can be difficult to determine the selected communications path. “Trace Route” allows the communications path to be traced through the network and determining how many hops the path is taking to get to the destination. Figure 55 – Trace Route The example above shows the response time from the Host to the first IP address (192.168.0.
915U-2 Wireless I/O Page 81 5.6 Network Statistics (WibMesh) Figure 56 – Network Statistics Period After enabling the “Gather Statistics” on the Main Network page, this page will display the average Receive and Transmit traffic throughput over a configured time period. From the drop down “Stats Period”, select the appropriate sample period then press the “Read” button.
Page 82 915U-2 Wireless I/O Hourly, this will display a graph showing overall transmit (t) and Receive (r) data on an hourly scale in accordance with the module Date and time stamp. (“rt” indicate both Transmit and Receive) Below the graph is a table showing the average data throughput (in packets) for transmit and receive and for each hour. Figure 58 – Hourly Statistics Daily and Weekly, period shows the average throughput over the daily or weekly time period.
915U-2 Wireless I/O Page 83 5.7 Monitor Comms 5.7.1 WibMesh – Monitor Radio Comms The Monitor Radio Comms page shows radio communication frames that are received or transmitted by the radio. Figure 60 - Monitor Comms The Table below shows some data frames from the communication log screen above. Below that is another table explaining each of the field within the data frame. Corrupted data frames are shown with an “ERROR!” in the frame. Time TX/RX Frequency Signal Level Data Length 0:18:10.
Page 84 Time TX/RX Frequency 915U-2 Wireless I/O Time stamp indicating the time from when the module was turned on. Indicates whether the message is received or transmitted Shows the Frequency of the RX/TX frame Signal Level Shows the Receive Signal Level on any received message or internal sequence number for the transmitted message.
915U-2 Wireless I/O Page 85 Time Source IP Dest IP Len Type Seq 03:02:45.073629 192.168.2.146.51891 192.168.2.143.4370 7 WRITE 9 03:02:45.075693 192.168.2.143.56678 192.168.2.146.
Page 86 915U-2 Wireless I/O The Table below shows an excerpt from the above screen shot. Data frames are displayed similar to the WibMesh Monitor Radio Comms except the data is a different format.. Below that is another table explaining each of the field within the data frame. Corrupted data frames are shown with an “ERROR!” in the frame. Time TX/RX Frequency Signal Level Data Length 0:06:12.465 Tx : 919.125 [ 1355] ( 11) 3A 03 81 02 00 86 00 01 00 01 ... 0:06:12.545 Rx : 921.
915U-2 Wireless I/O Page 87 5.8 Statistics (WibMesh & WibNet) The Statistics webpage is used for advanced debugging of 915U-2. This webpage details the state of the 915U-2 and performance information. The page is useful to ELPRO 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. Otherwise, the information will not be updated.
Page 88 915U-2 Wireless I/O Chapter 6 - Specifications 6.
915U-2 Wireless I/O Modulation Page 89 1W FSK Australia / NZ 1W EIRP Receiver RX Sensitivity -109dBm FER = 12% Serial Ports RS232 Port RJ45 RS485 Port 2 pin terminal block Data rates 110 – 230400 baud Parity Stop Bits DIO DI On-state Voltage Wetting Current Max I/P Pulse Rate Min I/P Pulse Width DO Max voltage DO Max current Max Pulse out Rate Analog Input Current Range Current Resolution Voltage Range Voltage Resolution Input Impedance AI1, AI2 (to common) Input Impedance AI3, AI4 (to +V) Input
Page 90 915U-2 Wireless I/O Appendix A: dBm to mW conversion table dBm to mW Conversion Watts dBm Watts dBm 10 mW 10 dBm 200 mW 23 dBm 13 mW 11 dBm 316 mW 25 dBm 16 mW 12 dBm 398 mW 26 dBm 20 mW 13 dBm 500 mW 27 dBm 25 mW 14 dBm 630 mW 28 dBm 32 mW 15 dBm 800 mW 29 dBm 40 mW 16 dBm 1.0 W 30 dBm 50 mW 17 dBm 1.3 W 31 dBm 63 mW 18 dBm 1.6 W 32 dBm 80 mW 19 dBm 2.0 W 33 dBm 100 mW 20 dBm 2.5 W 34 dBm 126 mW 21 dBm 3.2 W 35 dBm 158 mW 22 dBm 4.
915U-2 Wireless I/O Page 91 Appendix B: I/O Store Registers 6.1.1 “Output Coils” 0001 0008 0009 0020 Local DIO1 – DIO8 (as Outputs) at address 1-8. Spare 0021 Locally attached 115S modules DIO Outputs 0040 (See 115S detail below) 0041 0500 0501 3000 3001 10000 (space for up to 24 115S modules – 20 registers for each module) General Purpose Bit Storage – Used for: Staging area for data concentrator Fieldbus Mappings storage Force Mapping registers (assigned in Config) Not Available 6.1.
Page 92 12501 30000 915U-2 Wireless I/O Not Available 6.1.3 “Input Registers” 30001 Local AI1 – AI4. (Current Mode) 30004 ( AI1, AI2 4-20mA differential, AI3, AI4 4-20mA Sink) 30005 Local Supply voltage (8-40V scaling) 30006 Local Battery voltage 30007 Local 24V loop voltage 30008 115S Supply Voltage 30009 Local AI1 – AI4.
915U-2 Wireless I/O Page 93 Significand at Even / Higher Addressed location. Lower 16 bits of Significand at lower / Odd addressed location) 38032 38033 - 38040 32501 40000 (12.3 => 38001=CCCD, 38002=4144) Spare space for floating point values Not Available 6.1.
Page 94 48005 48040 48041 onwards Page 94 915U-2 Wireless I/O Spare space for floating point values Not Available User Manual
915U-2 Wireless I/O Page 95 Appendix C: Expansion I/O Store Registers To calculate the I/O Store register you need to find the address of the I/O point from the module tables below and then add the offset. The Offset is the Modbus address multiplied by 20. E.g1. Digital input #1 on an 115S-11 with address 5 would be: (5x20) +10001 = 10101 E.g2. Digital output #2 on an 115S-11 with address 6 would be: (6x20) +2 = 122 E.g3. Analog input #3 on an 115S-12 with address 3 would be: (3x20) +30003 = 30063. E.g4.
Page 96 915U-2 Wireless I/O 6.1.
915U-2 Wireless I/O Page 97 Appendix D: Modbus Error Codes Code Name Meaning Illegal Function The function code received in the query is not an allowable action for the server (or slave). This may be because the function code is only applicable to newer devices, and was not implemented in the unit selected. It could also indicate that the server (or slave) is in the wrong state to process a request of this type.
Page 98 915U-2 Wireless I/O Appendix E: Module I/O Registers I/O Digital I/O 1 Digital I/O 2 Digital I/O 3 Digital I/O 4 Digital I/O 5 Digital I/O 6 Digital I/O 7 Digital I/O 8 Analog Input 1 Analog Input 2 Analog Input 3 Analog Input 4 Analog Input 5 Analog Input 6 Analog Input 7 Analog Input 8 Analog Input 9 Analog Input 10 Analog Input 11 Analog Input 12 Analog Input 13 Analog Input 14 Analog Input 15 Analog Input 16 Analog Setpoint 1 Analog Setpoint 2 Analog Setpoint 3 Analog Setpoint 4 Analog Setpoin
915U-2 Wireless I/O Analog Setpoint 10 Analog Setpoint 11 Analog Setpoint 12 Analog Output 1 Analog Output 2 Pulsed Input 1 Count Pulsed Input 2 Count Pulsed Input 3 Count Pulsed Input 4 Count Pulsed Input 1 Rate Pulsed Input 2 Rate Pulsed Input 3 Rate Pulsed Input 4 Rate Pulsed Output 1 Count Pulsed Output 2 Count Pulsed Output 3 Count Pulsed Output 4 Count Analog I/P Floating Point Analog I/P Floating Point Analog I/P Floating Point Analog I/P Floating Point Analog I/P Floating Point Analog I/P Floating P
Page 100 915U-2 Wireless I/O 6.1.
915U-2 Wireless I/O Page 101 Pulsed I/O Rate 2 Pulsed I/O Rate 3 Pulsed I/O Rate 4 Supply Voltage 30002 30033 30033 30033 Analog Loop Supply 30034 30034 30034 30003 30004 All Expansion I/O is calculated by adding the „Offset‟ to the I/O address in the table. The „Offset is calculated by multiplying the module address by 20, Eg.
Page 102 915U-2 Wireless I/O 6.2 GNU Free Document Licence 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.
915U-2 Wireless I/O Page 103 conditions, and telling the user how to view a copy of this License. (Exception: if the Program itself is interactive but does not normally print such an announcement, your work based on the Program is not required to print an announcement.) These requirements apply to the modified work as a whole.
Page 104 915U-2 Wireless I/O excluding those countries, so that distribution is permitted only in or among countries not thus excluded. In such case, this License incorporates the limitation as if written in the body of this License. 9. The Free Software Foundation may publish revised and/or new versions of the General Public License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns.
