LONWORKS® LN-Series Network Communication and Interface Guide Technical Bulletin Code No. LIT-12011253 Software Release 6.0 Issued January 30, 2013 Supersedes October 6, 2008 Document Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Related Documentation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Setting up a LONWORKS LN-Series Network . . . . . . . . . . . . . . . . . . . . . . . . . .
Shielded Twisted Pair Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Entrance Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Network Interfaces. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Network Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting the LONWORKS LN-Series Network . . . . . . . . . . . . . . . . . . . . . . . . 39 Troubleshooting Using Device Status LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LONWORKS® LN-Series Network Communication and Interface Guide Technical Bulletin
LONWORKS® LN-Series Network Communication and Interface Guide Technical Bulletin Document Introduction Use this document for information on setting up LONWORKS® LN-Series networks, troubleshooting LONWORKS LN-Series networks, and installing related network interfaces. Related Documentation Table 1 provides a list of documents related to the LN-Series products and LONWORKS networks.
Setting up a LONWORKS LN-Series Network Network Design Network design is the first thing you must plan when starting a new project or modifying an existing one. Some of the most important factors to consider when designing a network are the number of devices, the length of the network, and the network access method.
Basic Layout with Onsite Management This architecture has a single operator workstation that includes the network operating system, a network management tool, and a Human-Machine Interface (HMI) application. Figure 2: Network Architecture — Basic Layout with Onsite Management Client/Server Architecture (Lightweight Client) In the lightweight client architecture, client applications communicate with the LNS® server computer via the Ethernet to perform network management, monitoring, and controls tasks.
Basic Layout with Off-Site Management (Telephony Connection) In this architecture, an operator workstation connects to the network via a modem. The operator workstation acts as the network server, a network management tool, and an HMI application. Figure 4: Network Architecture — Basic Layout with Off-Site Management (Telephony Connection) Basic Layout with Off-Site Management (Internet Protocol [IP] Connection) In this architecture, an operator workstation connects to the network via an IP connection.
Simple Web Browser Based Client In this architecture, the Web-based client performs monitoring and control tasks. A standard Web browser requests standard Hypertext Markup Language (HTML) Web pages from the Web server. Figure 6: Network Architecture — Simple Web Browser Based Client Network Spanning Local Area Network (LAN) or Wide Area Network (WAN) In this architecture, device and network tool traffic is routed across a LAN or WAN. An i.
Network Topologies The physical routing of the communication channel defines the network topology. The channel and transceiver type defines the requirements and limitations of each wiring topology. Some network segments such as the TP/FT-10 and TP/XF-1250 require termination for proper data transmission performance. Free topology and bus network topology differ in their termination requirements.
Note: The recommended topology to use when designing a network is a bus topology. Bus topologies are the easiest to troubleshoot and the maximum wiring length in a bus topology is greater than in a free topology. See the Channel Types section for detailed information about wiring lengths and network cable considerations. Free Topology Free topology is a flexible wiring structure for communication channels that include ring, star, loop and/or combination wiring structures.
Backbone Topology Routers connect device channels to a common backbone channel. Typically, the backbone is a high-speed channel, such as high-speed twisted pair, TP/XF-1250, or LONWORKS/IP. Each device channel can have either a free or bus topology. It is not necessary that each channel have the same topology. The guidelines for bus and free topologies (that is, termination requirements and wiring length) must be applied to each individual channel.
Communication Protocols A LONWORKS network is based on the LonTalk® communication protocol (American National Standards Institute [ANSI]/Electronic Industries Alliance [EIA]/Consumer Electronic Association [CEA]-709.1 standard). This protocol defines the format of the message being transmitted between devices and defines the actions expected when one device sends a message to another.
Table 6 provides details on and compares the channel types. Table 6: Channel Type Details and Comparison Channel Detail TP/FT-10 TP/LP-10 TP/XF-1250 PLT-22 LONWORKS IP FO-10 Common Name Free Topology Link Power Twelve Fifty Powerline N/A Fiber Typical Use Node Level1 Node Level Backbone2 Node Level Backbone Backbone Raw Bite Rate 78 kbps 78 kbps 1.
Network Cables The following section identifies the type of cabling that may be used in a TP/FT-10 or TP/XF-1250 twisted pair LONWORKS network. Note: Do not run TP/FT-10 channel communication cables close to high voltage power cables. Running these cables near each other may cause poor communication. IMPORTANT: Make all wiring connections in accordance with local, national, and regional regulations. Do not exceed the device’s electrical ratings.
Note: If you exceed the limits for the number of transceivers or total wire distance, you can add one Free Topology Transceiver (FTT) physical layer repeater to connect two segments and double the overall system capability. The second type of cable is 16 AWG, 1 twisted pair (1P), stranded conductor (STR), tinned copper (TNC), PVC insulation, PVC jacket, unshielded, plenum FT6, CSA 600V, and UL 300V.
Network Extension Follow length and device limitations when cabling a network. Before selecting a channel type and cable type, verify the maximum number of devices that can be added to a channel and the maximum length of the network. If you exceed the limits for the number of transceivers or total wire distance, you can add one FTT physical layer repeater to connect two segments and double the overall system capability. Bus Toplogy T T Re pea te r or R outer ... T T Bus Toplogy ...
Ground the cable shield using a capacitor to tie the shield to earth ground and use a large value resistor to bleed off any static charge on the shield. Tie the shield to earth ground through a capacitor, instead of with a direct connection. This prevents DC and 50/60 Hz ground paths from forming through the shield. Typical values for Cc and Rb are as follows: Cc = 0.1 µF, 10%, Metalized Polyester, ≥ 100 V Rb = 470 k≥, 1/4 W, ±5% Ground the cable shield at least once per segment, preferably at each node.
Network Interfaces Network interface selection is usually completed during the network design process. A network interface allows a computer to connect to a physical channel. Computer to Network interface adapters must have transceivers that are compatible with the physical channel to which they are attached. Table 10 describes the network interfaces available from the Echelon Corporation.
Network Structure A network structure includes the physical and logical structure. The physical structure consists of channels, repeaters, routers, and devices. The logical structure contains subsystems and devices. The first step to configure the network structure is to create the channels. Each channel can support up to 127 devices; however, a repeater or a second router with a new channel is required if you are adding more than 64 devices to a channel.
Multi-port Router A multi-port router consists of an internal backbone that is not visible or physically accessible to the user. The internal backbone connects several routers. You are adding a single physical device to the network when you add a multi-port router with n number of ports. In LN-Builder 3, you must specify that you are adding n routers connected by a TP-1250 backbone. In LN-Builder 3, you must set up the routers as illustrated in Figure 13.
Repeaters Use a repeater to extend the limits of a channel. On an FTT-10 channel type, device count and network length restrictions exist. The maximum number of devices on a FTT-10 channel is 64. See the Network Cables section for network length restrictions. These restrictions vary according to the topologies and cable types being used. When you reach the device count or cable length limit, you can use a repeater or a router to amplify signal.
Installing and Configuring Network Interfaces PCLTA-21PCI and PCC-10 Network Interface Cards The PCLTA-21 and the PCC-10 network interface cards allow you to connect a computer or a laptop directly to the physical network. See the Network Interfaces section for descriptions of these network interfaces. Refer to the PCLTA-21PCI Interface User’s Guide and the PCC-10 PC Card User’s Guide for more information on these network interfaces and their installation.
Configuring the PCLTA-21PCI and PCC-10 Network Interface Cards To configure the PCLTA-21PCI and PCC-10 network interface cards: 1. From the Start menu, select Settings > Control Panel. The Control Panel opens. 2. Double-click the LONWORKS Plug’n Play icon. The LONWORKS Plug’n Play dialog box appears (Figure 14). Figure 14: LONWORKS Plug’n Play Dialog Box 3. Verify that the NI Application field is set to PCC10VNI. 4. Verify that the Automatic Flush Cancel option is selected. 5. Click Transceiver.
8. Click Apply in the LONWORKS Plug’n Play dialog box. 9. Click Diagnostics. The Diagnostics dialog box appears. 10. Click Test. The status and error count from the PCLTA-21PCI and PCC-10 card appears (Figure 16 and Figure 17). Figure 16: Diagnostics Dialog Box — Test with No Errors Figure 17: Diagnostics Dialog Box — Failed Test Note: If there is a problem with the network interface, **Failed** appears in the Diagnostics dialog box (Figure 17).
i.LON 10 Ethernet Adapter The i.LON 10 Ethernet Adapter is an interface that connects LONWORKS based devices to the Internet, a LAN, or a WAN. There are multiple steps required to configure an i.LON 10 Ethernet Adapter. This section briefly describes how to set up the i.LON 10 adapter and use it as a Remote Network Interface (RNI). See the Network Interfaces section for a description of this network interface. For more information about this adapter, refer to the i.LON 10 Ethernet Adapter User’s Guide.
c. Reapply power to the i.LON 10 Ethernet Adapter while continuing to hold the service pin until the wink and connect Light-Emitting Diodes (LEDs) illuminate (10 seconds). Note: When the LEDs illuminate, it means that the security access reset has been performed properly. 3. To communicate with the i.LON 10 Ethernet Adapter, verify that your computer is on the same subnet as the i.LON 10 adapter, which is 192.168.1.x.
9. Click Submit when the configuration is complete. Note: These parameters take effect after you power cycle to the i.LON 10 device. Configuring the i.LON 10 xDriver Network Interface To configure the i.LON 10 xDriver network interface: 1. From the Start menu, select Settings > Control Panel. The Control Panel opens. 2. Double-click the LONWORKS Interfaces icon. The LONWORKS Interfaces dialog box appears (Figure 20). Figure 20: LONWORKS Interfaces Dialog Box 3. Click Add to add a new xDriver.
Note: Connect LN-Builder 3 to a remote network by configuring the Network Connection Settings to the OnNet Management Mode and Network Attached set to Yes. For instructions on configuring these settings, refer to the LN-Builder 3 Technical Bulletin (LIT-12011250). i.LON 100 Internet Server Note: The i.LON 100 Internet Server is the predecessor to the i.LON SmartServer. The i.LON 100 e.
2. Perform a security access reset on the i.LON 100 server to reset the IP address to the default value and enable other features: a. Disconnect the power adapter of the i.LON 100 server. b. Press and hold the service pin switch of the i.LON 100 server. c. Reapply power to the i.LON 100 server while continuing to hold the service pin until all of the LEDs illuminate (10 seconds). Note: When the LEDs illuminate, it means that the security access reset has been performed properly. 3.
Configuring the i.LON 100 xDriver Network Interface To configure the i.LON 100 xDriver network interface: 1. From the Start menu, select Settings > Control Panel. The Control Panel opens. 2. Double-click the LONWORKS Interfaces icon. The LONWORKS Interfaces dialog box appears (Figure 24). Figure 24: LONWORKS Interfaces Dialog Box 3. Click Add to add a new xDriver. The Add Network Interface Wizard appears (Figure 25). Figure 25: Add Network Interface Wizard 4.
i.LON 600 LONWORKS/IP Server The i.LON 600 LONWORKS/IP Server is an EIA-852 compliant device that allows LonTalk to IP communication and provides reliable and secure access to devices. You need the i.LON Configuration Server Utility and LONWORKS/IP Channels control panel application when using an IP channel. There are multiple steps required to configure an i.LON 600 LONWORKS/IP Server. This section briefly describes how to set up the i.LON 600 server and use it as a remote network interface (RNI).
Configuring the i.LON 600 LONWORKS/IP Server IP Address To configure the i.LON 600 LONWORKS/IP Server IP address: 1. Connect your computer directly to the i.LON 600 server using an Ethernet cable. 2. To communicate with the i.LON 600 server, verify that your computer is on the same subnet as the i.LON 600 server, which is 192.168.1.x. If the computer’s subnet is different, open a DOS command prompt and type in the following command: route add 192.168.1.0 mask 255.255.255.0 %computername% 3.
Configuring the i.LON 600 LONWORKS/IP Server To configure the i.LON 600 LONWORKS/IP Server: 1. From the Start menu, select Echelon i.LON 600 > LONWORKS-IP Configuration Server. The Echelon LONWORKS IP Configuration Server dialog box appears (Figure 28). Figure 28: Echelon LONWORKS IP Configuration Server Dialog Box 2. Add the i.LON 600 device: a. Right-click the Channel and select New Device. b. Type the desired name. c. Right-click the device and select Device Properties. d.
Configuring the i.LON 600 LONWORKS/IP Network Interface To configure the i.LON 600 LONWORKS/IP network interface: 1. From the Start menu, select Settings > Control Panel. The Control Panel opens. 2. Double-click the LONWORKS Interfaces icon. The LONWORKS Interfaces dialog box appears. 3. Click the IP-852 tab (Figure 29). Figure 29: LONWORKS Interfaces Dialog Box — IP-852 Tab 4. Click Add to add a new network interface. The Network Interface Add Wizard appears (Figure 30).
Note: Connect LN-Builder 3 to a remote network by configuring the Network Connection Settings to the OnNet Management Mode and Network Attached set to Yes. For instructions on configuring these settings, refer to the Defining Network Connection Settings section of the LN-Builder 3 Technical Bulletin (LIT-12011250). Note: Set up the i.LON 600 device as a router in the network database. Refer to the Adding a Router section of the LN-Builder 3 Technical Bulletin (LIT-12011250).
U/10 and U/20 Network Interfaces The U/10 and U/20 USB Network Interfaces are high-performance LONWORKS interfaces for USB-enabled computers and controllers. There are multiple steps required to configure these USB network interfaces (USB to TP/FT-10). This section briefly describes how to install and use the USB network interface. See the Network Interfaces section for a description of this network interface. For more information about this interface, refer to the USB Network Interface User's Guide.
Configuring the U/10 and U/20 Network Interface Properties To configure the U/10 or U/20 network interface properties: 1. From the Start menu, select Settings > Control Panel. The Control Panel opens. 2. Double-click the LONWORKS Interfaces icon. The LONWORKS Interfaces dialog box appears. 3. Click the USB tab (Figure 32). Figure 32: LONWORKS Interfaces Dialog Box — USB Tab 4. Note the network interface name.
Troubleshooting the LONWORKS LN-Series Network This section describes how to identify and repair typical problems that can occur in a LONWORKS network. The following flowchart summarizes the sequence of steps that are required to troubleshoot LONWORKS networks and devices (Figure 33).
1. Some devices use half-wave rectifier circuits. Verify that consistent polarity is maintained between all devices and the transformer. Check that the common terminals of all the controllers are connected and make sure that the 24 V input of all the controllers are connected. 2. For the auto-reset fuse, disconnect the power, input terminals, and output terminals. Wait a few seconds to allow the auto-reset fuse to cool down. Check the power supply and check the input and output wiring.