ETHERNET MANUAL Ethernet Node Configuration for Series 2 Digital Panel Meters, Counters, Timers, Transmitters and Ethernet-to-Serial Device Servers. LAUREL Electronics Inc. 3183-G Airway Ave, Costa Mesa, CA, 92626, USA Tel: (714) 434-6131 Fax: (714) 434-3766 Website: www.laurels.
1. TABLE OF CONTENTS 1. TABLE OF CONTENTS ....................................................................................................... 2 2. APPLICABILITY................................................................................................................. 3 3. ETHERNET PRIMER & DEFINITIONS ................................................................................ 4 4. JUMPER SETTINGS & FIELD WIRING ..........................................................................
2. APPLICABILITY This Manual applies to Ethernet option boards for our 1/8 DIN size digital panel meters and counters, to our DIN-rail Ethernet transmitters, and to our DIN-rail Ethernet-to-serial device server. These modules serve as Ethernet Nodes and are as follows: • Our LNET Ethernet option board plugs into a host 1/8 DIN digital panel meter or counter, and provides an RJ45 connector for a 10/100BaseT Ethernet interface.
3. ETHERNET PRIMER & DEFINITIONS An Ethernet node is an Ethernet connection point. Node (with a capital “N”) refers to our Ethernet nodes. These run special firmware, which allows them to be discovered and configured using built-in Web Server Software or PC-resident Node Manager Software. Configuration data is stored in flash memory of the Node. A Server Node interfaces the Ethernet to multiple meters and transmitters on an RS485 bus.
assigns a Private IP address to each device on the network. Built-in DHCP server capability allows Nodes to constitute themselves into a network and be connected directly to a host computer when no router or dedicated DHCP server is present. The time for Nodes to decide that there is no dedicated DHCP server is about 25 seconds.
4. JUMPER SETTINGS & FIELD WIRING 1. Safety Warnings Warning: Use of a device in a manner other than specified may impair the protection of the device and subject the user to a hazard. Visually inspect the unit for signs of damage. If the unit is damaged, do not attempt to operate it.
2. Hardware Overview The Ethernet connector for all of our Nodes is provided by an RJ45 jack, Green and amber LEDs on the jack indicate network operation: 1) Following power-up, the green and amber LEDs are on steady until an IP address has been assigned to the Node. 2) Once an IP address has been assigned to the Node, the amber LED is turned off. It will light up whenever the Node detects data packet activity.
3. Connection of 1/8 DIN meters Basic Ethernet panel meters use an LNET Ethernet option board with an RJ45 jack for direct connection to a computer, router, switch or hub via an Ethernet cable. RJ45 Ethernet Interface Board Basic Ethernet meter board No jumpers needed. Ethernet-to-serial device server meters with an LNET485 option board can function as normal meters for measurement and control purposes and also as a device server.
a bc d RS485 Interface Board, Rev. J RS485 Interface Board, Pre J RJ11 f Full duplex: No jumpers for short cable runs. Add b + d for long cable runs. Half duplex: a + c. Add d in last meter for long cable runs. RS485 meter board, pre-Rev J (shipped before April 2009) RJ11 Full duplex: b + e bias jumpers on one meter only. Add a + d in last meter for long cable runs. RJ11 Half duplex: b + e bias jumper on one meter only. c + f for half duplex operation. Add d in last meter for long cable runs.
4. Connection of Transmitters 4.
4.2 LTNET485 Ethernet-to-RS485 Device Server RJ45 P4 Ethernet RJ11 P3 RS485 d P2 c E6 b a P1 5 4 3 2 1 ARX (RX-) ATX (TX-) GND BRX (RX+) BTX (TX+) 3 Power GND 2 AC neutral or -DC 1 AC high or +DC The LTNET485 Ethernet-to-serial device server features an RJ45 Ethernet connector for direct connection to a computer, router, switch or hub via an Ethernet cable, plus an RJ11 RS485 connector which is wired in parallel to five screw terminals.
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5. NETWORK CONFIGURATION EXAMPLES Example 1. The host computer is connected directly to a meter with an LNET Ethernet I/O board or to an LTE transmitter via a single Ethernet cable. Upon power-up, the Node will wait about 25 seconds to decide that no dedicated DHCP server is present, then set itself up as a DHCP server. It will assign a local IP address to itself and to the host computer, creating a LAN consisting of the Ethernet Node and computer.
Example 3. The host computer is connected to a first meter with an LNET485 Ethernet-toserial server board via an Ethernet cable. This first meter can take measurements and also serves as the host for an Ethernet-to-serial server board. That board is acts as the Ethernet gateway for the host meter and for up to 31 other meters via commercial 6-wire RS485 data cables in daisy-chain fashion.
Example 5. On the same LAN are the host computer and a variety of Ethernet devices, which can include our LNET meters, LTE transmitters, and LTNET485 device servers. The host computer and all Ethernet devices on the same LAN are peers using the same level. If the router or switch connected to the computer has DHCP server capability, local IP addresses for all downstream devices will automatically be assigned by the router or switch. Otherwise one of our Nodes will assume the role of DHCP server. Example 6.
6. HOW TO SET UP NODES WITH NODE MANAGER PC SOFTWARE Nodes can be configured using Node Manager Software, a Windows-based application, as follows: 1. Connect all Nodes and RS485 device. The Nodes can be on the same LAN as the host computer or be connected to it via a WAN (Internet). They can also be connected directly to the host computer using a straight-through or cross-over Ethernet cable. Connection via a LAN or a straight-through cable is recommended for initial Node setup. 2.
GENERAL INFORMATION F1 Help Key. Pressing the F1 Key for any tab or control item in the Node Manager program brings up comprehensive help information for that item. To avoid executing a command item, right-click on the command button before pressing the F1 key. Get and Put Commands. The Get command reads configuration data from the Node for display on the host computer. The Put command writes configuration data from the host computer into the Node.
1. CONNECTION METHOD TAB The PC-to-Node connection can be made by two methods: Method 1: PC running Node Manager Software is the server, Node is the client. The PC sends a broadcast signal to all of the Nodes via the UDP protocol, and requests them to send back their IP and MAC addresses. Node Manager then lists all of responding Nodes, and the user chooses the one of interest. Node Manager then notifies that Node to send a request for a TCP connection.
2. NODE DISCOVERY TAB, LAN Nodes on a local LAN are automatically discovered under the Node Discovery tab when “LAN” is selected under “Select Network Type”. Nodes can be rediscovered at any time by pressing the “Repeat Node Discovery” button. Node discovery uses UDP Port 63179. If this port is blocked by a router, go to the “Advanced Settings” tab. There you can change the Local TCP port number and enter a second UDP port number, which will then be used for discovery in addition to 63179.
3. NODE DISCOVERY TAB, WAN Nodes on a remote LAN are automatically discovered via the Internet by selecting “WAN” under “Select Network Type”, entering the Public IP Address of the router to which the Nodes are connected, and pressing on “Repeat Node Discovery”. Node discovery uses UDP Port 63179. If this port is blocked by the router, go to the “Advanced Settings” tab. There you can change enter a second UDP port number, which will then be used for discovery in addition to 63179.
4. DEVICE DISCOVERY TAB, NOT A DEVICE SERVER NODE If the selected Node is an LNET485 Ethernet I/O board of a meter, only that single host meter will be discovered as the device for that Node. The Node itself will be shown with an artificially assigned address of 0. The address of the discovered device will be a number from 1-31 for device addressing with the Custom ASCII protocol or from 1-247 with the Modbus protocol. The address of the Node hosting device is always shown in parentheses ( ).
5. DEVICE DISCOVERY TAB, DEVICE SERVER NODE If the selected Node is the LNET485 Ethernet-to-serial device server option board of a meter or is a DIN-rail LTNET485 Ethernet-to-serial device server, up to 31 RS485 physical devices may be discovered, including the host meter of an LNET485 option board. Since Modbus allows addresses of 1-247, there can be unused addresses.
6. TIME ZONE TAB A time stamp is included in email messages and in streaming data sent by the Node. If the Node has a path to the Internet (also required for email), the Node will automatically obtain accurate UTC/GMT time (Coordinated Universal Time or Greenwich Mean Time) from an online time server. The Node’s time zone or the offset from UTC/GMT time must be also supplied using this screen. To set the Node’s time zone, select the Region as “USA/Canada” or “Other”.
7. EMAIL ADDRESSES TAB Readings and alarm notifications can be emailed by the Node to a list of email addresses stored in the Node. Node’s E-Mail Address List displays email addresses stored in the Node that will be receiving emails from the Node. To retrieve that list from the Node, press on “Get”. To delete an address from the Node, highlight it, press on “Delete from List”, then press on “Put”.
Alarm Email Notification Interval. An alarm notification email can be sent to all email recipients each time the alarm status of a device connected to the Node changes. To reduce the number of emails, this interval dictates the minimum time between consecutive emails. Alarm emails are disabled by entering an interval of 0 (hours, minutes or seconds). Alarm Dwell Time.
8. EMAIL ACCOUNT TAB A Node must have its own email account so that it can send and receive emails. Node's E-Mail Address. Enter a unique email address for the Node so that it can receive email, then press on “Put”. That address will also be shown as the sender in emails from the Node. Server Information (Names). Enter names for the Incoming Mail (POP3) and Outgoing Mail (SMTP) servers for the Node. This information should be the same as for other email clients on the same network.
9. ADVANCED SETTINGS TAB Change “Local TCP Port” from its factory default of 502 if that port value is blocked by the router. Change “Remote Node UDP Port 2” from its factory default of 63179 if that port value is blocked by the router. Node discovery will use both Node UDP Port 1 at 63179 and Node UDP Port 2 at the value set using this screen. Change “TCP Connection Timeout” from its factory default of 30 seconds if so desired. Minimum timeout is 16 seconds. Enter 0 to disable timeout.
10. FIRMWARE UPGRADE TAB Node firmware upgrades are available from the factory at no charge and should be installed into each Node when available. Upgrading the firmware will not affect data stored in the Node. To see if a Node needs an upgrade, click on the Firmware Upgrade tab and note the revision of the currently installed firmware, such as EtherLN1_0_0.txt. Then go to the Software Downloads section of the factory website and note the latest posted revision.
7. HOW TO SET UP NODES WITH THEIR BUILT-IN WEB SERVER A Web Server is built into each Laurel Node and hosts a website with an IP address, which can be entered into the URL field of a browser (such as Internet Explorer) or be the destination of a web link. The Web Server offers the same Node discovery and setup functions as Node Manager Software, except that only Node Manager Software can be used for Node firmware upgrades. All web server pages offer online help.
1. NODE DISCOVERY Web Page How to get here: Upon entering the public IP address of your router or the first IP address of a Node into your browser, this web page displays all LNET, LTE, LNET485 and LTNET485 Nodes on the same LAN as the router or first Node. NODE NAME: A Node’s default name is “Node” followed by the Node’s unique MAC address. This name may be changed by the user to a more descriptive name by clicking on SETUP.
2. NODE SETUP Web Page How to get here: From the top navigation bar of the selected Node. Background: A time stamp is included in email messages and in streaming data sent by the Node. If the Node has a path to the Internet (also required for email), the Node will automatically obtain accurate UTC/GMT time (Coordinated Universal Time or Greenwich Mean Time) from an online NTP time server. The Node’s time zone, daylight saving time status, and the offset from UTC/GMT time are supplied using this screen.
CHANGE NODE NAME: Used to enter a descriptive name for the Node, such as "Tank 1 Level". If a custom entry is not made, the assigned default name is in the format Node :D4:20:38, where the word "Node" is followed by the Node’s MAC address. Press GO to enter any change. CHANGE LED STATES: Use the pull-down selections to change the color assignments of the two indicator LEDs on the RJ45 jack.
3. DEVICE INTERFACE SETUP Web Page How to get here: From the top navigation bar of the selected Node. Background: The Device Interface Setup screen applies to the Node whose MAC address is shown in the top right of the screen. If the selected Node is an LNET Ethernet I/O board of a meter, only that single host meter will be discovered as the device for that Node.
CHANGE DEVICE NAME: To rename a device, first select the device using the "Select Device" field to the left, then enter a new desired name and press GO. The new name will then appear under "Select Device" preceded by the device number and an = sign. For example, you may change the name of the first device to "Boiler 1 Pressure" to make reports more understandable.
ALARM NOTIFICATION (SEC): An alarm notification email can be sent to all email recipients each time the alarm status of a device connected to the Node changes. To reduce the number of emails, this interval in seconds dictates the minimum time between consecutive emails. Alarm emails are disabled by entering an interval of 0. Press GO to enter any change. ALARM DWELL TIME (SEC): An alarm dwell time can be set in seconds to reduce the number of emails sent by the Node.
4. EMAIL SETUP Web Page How to get here: From the top navigation bar of the selected Node. Background: An email account can be set up for each Node. This allows the Node to send data readings at periodic intervals, when it encounters an alarm condition, when it goes on-or off-line, or in response to email requests. Commands can also be emailed to the Node with these capitalized words in the subject line: LIST – Adds the sender’s email address to the email list in the Node.
Top row: Links to DEVICE INTERFACE SETUP, NETWORK SETUP, and NODE SETUP web pages. POP3 SERVER: The incoming mail server to be used for the Node. Enter the same name as for the other email clients on the same network, such as mail.mycompany.com. Press on the first GO to enter. POP3 USERNAME: The username to be supplied to retrieve incoming email. It is tied to the Node's specific email address and is normally supplied by the network administrator or company IT department. Press on the first GO to enter.
5. NETWORK SETUP Web Page How to get here: From the top navigation bar of the selected Node. Background: Each Node has an IP address which is used to address the Node on a local area network (LAN) or on the Internet (WAN). An IP address can be static and public so that it can be addressed on over the Internet and have an associated domain name. It can also be a dynamic address assigned by a router or other DHCP server on a LAN. Such an address is also called a private or local IP address.
GATEWAY IP: Enter the static IP address of your LAN's gateway router if you want to be able to address your Nodes from anywhere over the Internet. This address is normally provided by your organization's IT department. Leave the entry at 0.0.0.0 if you do not want address your Nodes from anywhere over the Internet. Press GO to enter any change. A gateway router is a device which provides the entrance to a local area network (LAN).
STEALTH MODE: This setting precludes the Node from broadcasting a 70-byte self-identification message over the LAN every 15 seconds. This setting should only be selected if such broadcasting is not allowed by IT department policy, as it does not allow the Nodes to discover each other's IP Addresses. However, IP addresses can still be discovered by our PC-resident Node Manager software. NTP SERVER: Enter an NTP time server, if desired, other than www.pool.ntp.org.
6. DEVICE DISCOVERY Web Page How to get here: Select a specific Node on the NODE DISCOVERY PAGE and click on DEVICES or on NODE. Background: This screen displays all Devices (or instruments) discovered for the Node. If the Node is an LTNET Ethernet board in a meter or counter or is an LTE transmitter, only a single Device will be shown, namely the host meter, counter or transmitter.
9. INSTRUMENT SETUP SOFTWARE Instrument Setup software running on a host computer is the preferred tool to set up devices on the network (meters, counters, timers and transmitters). That software allows uploading, editing and downloading of setup data, execution of commands under computer control, listing, plotting and graphing of data, and computer prompted calibration. It also displays jumper locations, for example to set up signal ranges, which cannot be done with software.
You will find that Instrument Setup software is very user friendly, with separate tab-selectable windows for Input+Display, Scaling, Filter, Relay Alarms, Communications, Analog Output, and Lockouts. If the required hardware, such as the analog output board, is not sensed, the corresponding tab will be grayed out. Uploading and downloading setup files from a host PC can be a major time saving when multiple meters or transmitters have to be set up in the same way.
10. WARRANTY Laurel Electronics Inc. warrants its products against defects in materials or workmanship for a period of one year from the date of purchase. In the event of a defect during the warranty period, the unit should be returned, freight prepaid (and all duties and taxes) by the Buyer, to the authorized Laurel distributor where the unit was purchased. The distributor, at its option, will repair or replace the defective unit.
