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Lantronix 485 manual

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Table of contents for the manual

  • Page 1

    NET485 RS422/485 Serial to Ethernet Adapter Revision C March 24, 2006 Part Number GC-800-240[...]

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    [...]

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    Copyright and Trademark Copyright © 2005, Grid Connect, Inc. All rights reserved. No part of this manual may be reproduced or tran smitted in any form for any purpose other than the purchaser's personal use, without the express written permission of Grid Connect, Inc. Grid Connect, Inc. has made every effort to provide complete details about [...]

  • Page 4

    Disclaimer and Revisions Operation of this equipment in a residential ar ea is likely to cause interference in which case the user, at his or her own expense, will be require d to take whatever measures may be required to correct the interference. Attention: This product has been designed to comply with the limits for a Class B digital device pursu[...]

  • Page 5

    Warranty Grid Connect warrants each product to be free from defects in material and workmanship for a period of ONE YEAR after the date of shipment. During this period, if a customer is unable to resolve a product problem with Grid Connect Tec hnical Support, a Return Material Authorization (RMA) will be issued. Following receipt of a RMA nu mber, [...]

  • Page 6

    Contents Table of Contents 1. NET485 Overview ............................................................................................................ 1-1 1.1 Overview ............................................................................................................. 1-1 1.2 Overview of RS422 / RS485 ..................................[...]

  • Page 7

    Contents 3.12.1 Telnet Connection............................................................................3-21 3.12.2 Telnet Messages ..............................................................................3-22 3.13 Server Configuration (Op tion 0 Net work Configuration) ............................... 3-24 3.13.1 IP Address ..............[...]

  • Page 8

    Contents 3.18 Defaults ........................................................................................................... 3-44 3.19 Exit Configuration Mode ................................................................................ 3-44 4. Monitoring the Network .........................................................................[...]

  • Page 9

    Contents List of Tables Table 1 - RS422/485 Signals ..................................................................................................2-2 Table 2 - NET485 LED Functions ..........................................................................................2-3 Table 3 - Technical Specs .............................................[...]

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    [...]

  • Page 11

    Overview 1. NET485 Overview 1.1 Overview The NET485 product allows you to connect to an RS422 / RS485 transceiver to enable rem ote serial communications over long distances (up to 4,000 ft.). Using RS485 two-wire mode, you can also connect the NET485’s serial interface to multiple devices in a multi-drop network. The NET485 is designed around th[...]

  • Page 12

    Overview 1.2.1 The RS485 Enable Signal In a balanced differential system the data signals are produced by a line driver. The line driver generates a voltage across a pair of signal wires that transmits th e data signals. A balanced line driver can have an optional input signal called an “Enable” signal. The purpo se of the enable signal is to c[...]

  • Page 13

    Overview The NET485 can handle both RS485 and RS422 comm unicati ons. This is done by connecting the XPort to a pair of RS485 transceivers. The following schematic demonstrates how the circuit is wired for RS422 and RS485. D R Vc c 3. 3V DE DI RO RE GN D 8 3 4 1 2 5 7 6 6 D R Vc c 3. 3V DE DI RO RE GN D 8 3 4 1 2 5 7 6 TX D A (Pin 7 ) TX DB ( P i n[...]

  • Page 14

    Overview 1.3 RS422 / RS485 Network connections 1.3.1 RS422 Networks A typical RS422 application uses a four-wire interface (two twisted pairs) and a shield. RS422 networks are often used in a half-duplex mode, where a single mast er in a system sends a command to a slave device and the slave responds with data. Typically one device (node) is addres[...]

  • Page 15

    Overview 1.3.2 RS485 Networks RS485 permits a balanced transmission line to be shared in a part y line or multi-drop configuration. As many as 32 driver / receiver pairs can share a multi-drop network on a single two wire bus. The length of the network is limited to 4,000 ft. between the first node and the last node. RS48 5 can be used in two-wire [...]

  • Page 16

    [...]

  • Page 17

    Introduction 2. Introduction The NET485 product allows you to connect an RS422 / RS485 transceiver to the Ethernet. Using RS485 two-wire mode, you can connect the NET485’s serial interface to multiple devices in a multi-drop network. To quickly setup the NET485, please refer to the Qu ick Start Guide. This section discusses the general details of[...]

  • Page 18

    Introduction 2.2 Serial RS422/485 Interface The table below lists the RS422/485 signals for the NET485. The RS422/485 and power interface is a 7-pin removable Phoenix connector, with two of the pins used for power. Table 1 - RS422/485 Signals NET485 Signal 7-Pin Phoenix TXDA 7 TXDB 6 RXDA 5 RXDB 4 SGND 3 GND 2 8-24VDC 1 8- 24V DC GND SG N D RX DB R[...]

  • Page 19

    Introduction 2.4 Ethernet Interface The NET485 device contains the following LEDs: • 10BaseT/100BaseTX (Bi-color, Left LED) • Full/Half Duplex (Bi-color, Right LED) LEF T LED POWER LED Figure 6 - Ethernet Jack Table 2 - NET485 LED Functions Left LED Right LED Meaning Solid Amber 10BASE-T Solid Green 100BASE-Tx Blinking Amber Half Duplex Activit[...]

  • Page 20

    Introduction 2.5 Product CD The CD sent with the NET485 contains Device Instal ler software and technical manuals to support the NET485. Device Installer allows for fast and easy configuration of the NET485. 1. Insert the CD into your CD-ROM drive. The CD will automatically start and display the main window. If the CD does not launch automatically:[...]

  • Page 21

    Introduction 2.6 Additional Documentation The following guides are available on the product CD. There are several other manuals on the CD, however, they do not apply to the N ET485 product. Title Description File Name NET485 User Guide This manual in PDF format. NET485_UM_800240_a.pdf Device Installer User Guide Inform ation about installing and us[...]

  • Page 22

    Introduction 2.7 Technical Specifications Table 3 - Technical Specs The transceiver used in the NET485 is intended for ba lanced data transmission and complies with both EIA Standards RS-485 and RS-422. It contains a differentia l line driver and a differential line receiver, and is suitable for half-duplex transfer. The input impeda nce is 19KOhm [...]

  • Page 23

    Device Installer 3. Device Installer 3.1.1 Microsoft NET Framework Microsoft .NET is the Microsoft strategy for connec ting systems, information, and devices through Web services so people can collaborate and communicate more effectively. .NET technology is integrated throughout Microsoft products, providing the capability to quickl y build, deploy[...]

  • Page 24

    Device Installer 2. Click the NET485 Software button. 3. Device Installer requires Microsoft .NET Framework be installed on your s ystem. If your system does not have this installed, click the NET Framework button to install it. 4. Click the Device Installer button. The installation wizard window displays. 5. Respond to the installation wizard prom[...]

  • Page 25

    Device Installer 3.1.5 Assign IP Click the Assign IP icon , select Assign IP Address from the Device menu or press the F7 key. You are then asked to select an assignment me thod. To assign a specific IP address, select the Assign a specific IP address button in the dialog box. Click Next to continue. If you choose to obtain an IP address automatica[...]

  • Page 26

    Device Installer 3.1.6 Assignment Click the Assign button and wait until the progress bar shows the task is complete. Click the Finish button to return to the main Device Installer dialog. Select the device from the main window list and select Ping from the Tools menu. The Ping Device dialog box shows the IP address of the selected unit. Click the [...]

  • Page 27

    Device Installer 3.2 Using Device Installer Device Installer is used to locate all devices that use a Lantronix device server. The NET485 uses the XPort- 03 device server. To configure the unit via a Web browser, double-click on one of the devices listed in the Device Installer window. This will display the Device Details window. Expand the list of[...]

  • Page 28

    Device Installer Online S tat us Non-configurable field. Displays the XPort’s st atus as online, offline, unreachable (the XPort is on a different subnet), or busy (t he XPort is currently performing a task). Telnet Enable d Non-configura ble field. Permits Telnet sessions. Telnet Port Non-configurable field. Displays the XPort’s port for telne[...]

  • Page 29

    Device Installer 3.3 Configuration Us ing Web Manager Yo u m us t co n fi g u r e t h e u ni t s o th at i t c an co m m u ni c at e on a network with yo ur serial device. For example , you must set the way the unit w ill respond to serial and ne twor k traffi c, how it wi ll handle serial packets, and when to start or close a c onnection. The unit[...]

  • Page 30

    Device Installer 3.4 Network Configuration The unit ’s network values d isplay when you sele ct Network from the main menu. The following sections describe the configurable paramete rs on the Network Settings page. 3.4.1 Automatic IP Address Configuration An IP address can be assigned automatically. You the n e nt er re la te d ne tw ork s et ti [...]

  • Page 31

    Device Installer Note: Disabling BOOTP, DHCP, and AutoIP (all three checkboxes) is not a dv i se d a s th e o n ly a v ai l ab l e I P assignment method w ill then be ARP or serial port. 4. When you are finished, click the OK button. 5. On the main menu, click Apply Settings. 3.4.2 Static IP A ddress Configuration You manually assign an IP address [...]

  • Page 32

    Device Installer 3.5 Server Configuration The unit’s serv er values display when y ou select Server from the main menu. The following sections describe the configurable parameters on the Server Settings page. To configure the XPort’s device server settings: 1. On the ma in menu , clic k Server . 2. Configure or m odif y the f ollowin g field s:[...]

  • Page 33

    Device Installer 3.6 Host List Configuration The XPort scrolls through the host list until it connects to a device listed in the host list table. After a successful connection, the unit stops trying to connect to any others. If this connection fails, the unit continues to scroll through the table until the next successful connection. The host list [...]

  • Page 34

    Device Installer 3.7 Channel 1 Configuration The Channel 1 configuration defines how the serial port responds to network and serial communication. Serial Settings To configure the channel’s serial settings: 1. On the main menu, click Serial Settings (under Channel 1 ) to display the Serial Settings window. 2. In the available fields, enter the fo[...]

  • Page 35

    Device Installer Port Settings Protocol From the drop -down menu, select the protocol ty pe for the selected channel. For the NET485, this MUST be RS485 2-w ire or RS422/RS485 4-wire. Flow Contr ol Flow control manages data flow betw een devices in a ne twork to ensure it is processed effi ciently . Too much data arriving before a device is prepare[...]

  • Page 36

    Device Installer Flush Output Buffer (Network to Serial) With A c tiv e Connec t Select Yes to clear the output buffe r wi th a connection that is i nitiated from the device to the ne twork. The default is No . With Passive Connec Select Yes to clear the outpu t buffe r w ith a connection ini tiated from the network to the d evice. The default i s [...]

  • Page 37

    Device Installer 2. In the available fields, enter or modify the following information: Connect Protocol Protocol From the drop -down menu, select TCP. Connect Mode: Passive Connection Accept Incoming Select Yes to accept incoming connections. Th e default is Yes . Password Required Determines whether a password is required for an inco ming passive[...]

  • Page 38

    Device Installer Use Hostlist If this option is set to Tr ue , the device server scrolls through the host list until it connects to a device lis ted in the host list table. Once it connects, the uni t stops trying to connect to any others. If this connection fails, the unit continues to scroll through the table until it connects to another IP in th[...]

  • Page 39

    Device Installer 3.7.2 Connection Settings - UDP To configure a channel’s UDP settings: 1. On the main menu, click Connection . The Connection Settings window for t he selected channel displays. 2. In the available fields, enter or modify the following information: Connect Protocol Protocol Select UDP fro m the drop-dow n menu. Datagram Mode Data[...]

  • Page 40

    Device Installer 3.8 Email Settings An XPort can send an email to multiple recipients wh en a specific trigger even t occurs. There are three separate triggers, based on any combination of the configurable pins selected as user I/O functions. Optionally, use a two-byte serial string to initiate a tri gger. Each trigger is independent of the others.[...]

  • Page 41

    Device Installer 3.8.1 Trigger Configuration The configurable pins are disabled if they are all set to None. If both th e serial sequenc e and the c onfigurabl e pins are disabled, the trigger is disabled. To configure the XPort’s email trigger settings: 1. On the main menu, click Trigger 1, Trigger 2, or Trigger 3 to configure the desired trigge[...]

  • Page 42

    Device Installer 3.9 Configurable Pin Settings There are three configurable hardware pins on the XPort device server inside the NET485. To configure the NET485, select Configurable Pin CP0. 1. On the main menu, click Configurable Pins . The Configurable Pins page opens. 2. Configure or modify the following fields for each pin: Functi on From the dr[...]

  • Page 43

    Device Installer 3.11 Apply Factory Defaults Click the Apply Factory Defaults button to set the device server back to the default settings. 3.12 Configuration Using Telnet You must configure the unit so that it can communicate on a network with your serial device. The unit’s configuration is stored in nonvolatile memory a nd is retained without p[...]

  • Page 44

    Device Installer 3.12.2 Telnet Messages 3. The window displays: MAC address 00204A82CCAA Software version V6.1.0.2 (060217) XPTEXE Press Enter for Setup Mode 4. To enter the Setup Mode, you must press Enter within 5 seconds . The configuration settings will appear. 5. Select an option on the menu by entering the number of the opti on in the Your ch[...]

  • Page 45

    Device Installer ***************** E-mail ***************** Mail server: 0.0.0.0 Unit : Domain : Recipient 1: Recipient 2: *** Trigger 1 Serial trigger input: disabled Channel: 1 Match: 00,00 Trigger input1: x Trigger input2: x Trigger input3: x Message : Priority: L Min. notification interval: 1 s Re-notification interval : 0 s *** Trigger 2 Seria[...]

  • Page 46

    Device Installer 3.13 Server Configuration (Option 0 Network Configuration) These are the unit’s basic network parameters. The fo llowing parameters ar e displayed when you select Server (Option 0). IP Address : (000) .(000) .(000) .(000) Set Gateway IP Address (N) Netmask: Number of Bits for Host Part (0=default) (0) Change telnet config passwor[...]

  • Page 47

    Device Installer Table 5 - Netmask Examples Netmask Host Bits 255.255.255.252 NOT Recom mended 255.255.255.248 3 255.255.255.240 4 255.255.255.224 5 255.255.255.192 6 255.255.255.128 7 255.255.255.0 8 255.255.254.0 9 255.255.252.0 10 255.255.248.0 11 255.255.240.0 12 255.255.224.0 13 255.255.192.0 14 255.255.128.0 15 255.255.0.0 16 255.254.0.0 17 2[...]

  • Page 48

    Device Installer 3.13.5 DHCP Naming If a DHCP server has automatically assigned the IP addr ess and network settings, y o u c a n d i s c o v e r t h e u n i t b y u s i n g t h e D e v i c e I n s t a l l e r network search feature. There are 3 methods for assigning DHCP names to these products. 1) Default DHCP name. If you do not change the DHCP [...]

  • Page 49

    Device Installer 3.14.2 I/F (Inter face) Mode The Interface (I/F) Mode is a bit-coded byte that you enter in hexadecim al notation. Table 6 - Interface Mode Options I/F Mode Option 7 6 5 4 3 2 1 0 RS-232C (1) 0 0 RS-422/485 0 1 RS-485 2-wire 1 1 7 Bit 1 0 8 Bit 1 1 No Parity 0 0 Even Parity 1 1 Odd Parity 0 1 1 Stop bit 0 1 2 Stop bit (1) 1 1 (1) 2[...]

  • Page 50

    Device Installer 3.14.4 Port Number The setting represents the source port number in TCP c onnections. It is the number used to identify the channel for remotely initiating connections. Note: When using Comm P ort Redirector software, use this port number. Default setting for Port 1 is 10001. Range: 1-655 35 except for the following reserved port n[...]

  • Page 51

    Device Installer 3.14.5 Connect Mode Connect Mode defines how the unit makes a connection, and how it reacts to incoming connections over the network. Enter Connect Mode options in hexadecimal notation. Note: If you do not want to convert the binary numbers to hex adeci mals yourself, look up the values in the Tech Notes guide. Table 10 - Connect M[...]

  • Page 52

    Device Installer INCOMING C ONNECTION : Never Accept Incoming: Rejects all external connection attempts. Accept with DTR Active: Accept external connection requests only when the DTR input is asserted. Cannot be used with Modem Mode. Always Accept: Accept any inco ming connection when a connection is not already established. This is the default set[...]

  • Page 53

    Device Installer Table 11 - Manual Connection Address Example Command String Result if remote IP is 129.1.2.3 and remote port is 1234 C121.2.4.5/1 Complete override; connecti on is started with host 121.2.4.5, port 1 C5 Connect to 129.1.2.5, port 1234 C28.10/12 Connect to 129.1.28.10, port 12 C0.0.0.0/0 Enter Monitor Mode Autostart (Automatic Conne[...]

  • Page 54

    Device Installer 2. To delete, modify, or add an entry, select Yes . If you enter an IP address of 0.0.0.0, that entry and all others after it are deleted. 3. After completing the hostlist, repeat the previous step if necessary to ed it the hostlist again. 4. For Retrycounter , enter the number of times the unit should tr y to make a good network c[...]

  • Page 55

    Device Installer Without Echo: In Modem Mode, echo refers to the echo of all of the characters entered in command mode; it does not mean to echo data that is transferred. Quiet Mode (without echo) refers to the modem not sending an answ er to the commands received (or displaying what was typed). Data Echo & Modem Response Full Verbose : The uni[...]

  • Page 56

    Device Installer 3. No serial data is received for one second after the last + character. At this time the unit will respond affirmatively per the selected echo/response mode. 4. The character string ATH is received, terminated with a carriage return. The unit will respond affirmatively per the selected echo/response mode a nd drop the network conn[...]

  • Page 57

    Device Installer 3.14.8 Remote IP Address This is the destination IP address used with an outgoing connection. Note: This option does not display w hen H ostlist is enabled from the ConnectMode prompt. 3.14.9 Remote Port The remote TCP port number must be set for the unit to make outgoing connections. This param eter defines the port number on the [...]

  • Page 58

    Device Installer 3.14.11 Flush Mode (Buffer Flushing) Using this parameter, you can control line handlin g and network buffers with connection startup and disconnect. You can also select between two different packing algorithms. Table 14 - Flush Mode Options Function 7 6 5 4 3 2 1 0 Input Buffer (Serial to Net work) Clear with a connection that is [...]

  • Page 59

    Device Installer 3.14.12 Pack Control Two firmware-selectable packing algor ithms define how and when packets are sent to the network. The standard algorithm is optimized for applications in wh ich the unit is used in a local environment, allowing for very small delays for single characters while k eeping the packet count low. The alternate packing[...]

  • Page 60

    Device Installer 3.14.14 Send Characters You can enter up to two characters in hexadecimal representation in the parameters "sendchar." If a character received on the serial line matches one of the se characters, it is sent immediately, along with any awaiting characters, to the TCP connection. This minimizes the response time for specifi[...]

  • Page 61

    Device Installer *** Trigger 2 Enable serial trigger input (N) ? Trigger input1 [A/I/X] (X) ? Trigger input2 [A/I/X] (X) ? Trigger input3 [A/I/X] (X) ? Message (): Priority (L): Min. notification interval (1 s): Re-notification interval (0 s): *** Trigger 3 Enable serial trigger input (N) ? Trigger input1 [A/I/X] (X) ? Trigger input2 [A/I/X] (X) ? [...]

  • Page 62

    Device Installer 3.16 Expert Settings Note: You can change these settings via Tel n et or se rial connections only, not on the Web-Manager. These parameters should only be changed if you are an expert and definitely know the consequences the changes might have. TCP Keepalive time in s (1s – 65s; 0s=disable): (45) ARP Cache timeout in s (1s – 60[...]

  • Page 63

    Device Installer 3.16.6 HTTP Port Number This option allows changing the HTTP port number. Th e valid range is from 1 - 65535. The default value is 80. 3.16.7 SMTP Port Number This option allows you to configure the SMTP (em a il) port number. Valid range is from 1 - 65535. T he default value is 25. 3.16.8 MTU Size The Maximum Transmission Unit (MT[...]

  • Page 64

    Device Installer 3.17 Security Settings Note: You can change these settings via Tel net or serial c onnections only, not on the Web-Mana ger. We recommend that you set security over the dedicated network or over t he serial setup. If you set parameters over the netw ork (Telne t 9999), someone else could ca pture these s ettings. Caution: Disabling[...]

  • Page 65

    Device Installer 3.17.5 Disable Port 77FE (Hex) Note: If you choose to disable this option, keep in mind that disabling both Telnet Setup and Port 77FE will prevent users from accessing the setup menu fro m the netw ork. Port 77FE is a setting that allows Device Installer, Web-ma nager, and custom programs to configure the unit remotely. You may wa[...]

  • Page 66

    Device Installer Generally, one of two situations applies: Encrypted NET485-to-NET485 communication. Be sure to configure both NET485 devices with the same encryption key. Third-party application to NET485-encrypted communication: NET485 uses standard AES encryption protocols. To communicate successfully , products and applications on the peer side[...]

  • Page 67

    Monitor Mode 4. Monitoring the Network Monitor Mode is a command-line inte rface used for diagnostic purposes. 4.1.1 Entering Monitor Mode via the Network Port To enter Monitor Mode using a Telnet connection: 1. Establish a Telnet session to the configuration po rt ( 999 9) . T he fol lo win g m essage appears: MAC address 00204A0113A3 Software ver[...]

  • Page 68

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  • Page 69

    Firmware 5. Updating Firmware 5.1 Obtaining Firmware You can obtain the most up-to-date firmware and release notes for the unit from Grid Connect. Do not upgrade firmware unless directed by Technical Support. 5.1.1 Reloading Firmware Reloading the firmware of a device will destroy all settings and configurations. Firmware files are not freely distr[...]

  • Page 70

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  • Page 71

    Troubleshooting 6. Troubleshooting This chapter discusses how you can diagnose and fix errors quickly without having to c o n t a c t G r i d C o n n e c t . When troubleshooting, always ensure that the physi cal connections (power cable , network cable, and serial cable) are secure. Note: Some unexplained err ors might be caused by duplic ate IP a[...]

  • Page 72

    Troubleshooting does not respond for a long time. The device server may not have a network connection. Make sure that the Link L ED is li t. If the Link LED is not lit, then th e device server does not have a network connection. The device server is not communicating w ith the serial device it is attached to . The most likely reason is the wrong se[...]

  • Page 73

    Tables 7. Binary to Hex Conversion Many of the unit’s configuration procedures require a ssembling a series of options (represented as bits) into a complete command (represented as a b yte). Convert the resulting binary value to a hexadecimal representation. Following a re two sim ple ways to co nvert binary numbers t o hexadecim als. 7.1.1 Conve[...]

  • Page 74

    Tables Click Hex. The hexadecimal value displays. 7-2 NET485 User Guide[...]