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1. Introduction 

TRP-C37 is suitable industrial environment Ethernet serial server, wide range power input and 

serial communicate protection, Built-in surge, over current ,over voltage ensure RS422/485 

serial communication quality ; Increase watchdog function will auto reset when Ethernet serial 

server or power fail, if careless lost password or wrong setting value that can fast back to factory 

by external switch. 

TRP-C37 support 3 operates mode, “Direct IP Mode”, “Virtual COM Mode”, and “Paired Mode”, 

RS232 interface has one D-SUB 9pin connector and screw terminal block for RS422/485. The 

Ethernet port support Auto-MDIX and Auto-select 10/100MB.     

TRP-C37 offers maximum connection 16 host clients to link the one serial server, it is easy to 

operate in Modscan32 and Modbus Poll many application uses Virtual-COM mode and Pair 

Mode. 

 

TRP-C37 provides a watchdog timer function, The Watchdog timer allows the system to 

automatically recover from a system crash. When the TRP-C37 MCU stop working correctly, the 

watchdog timer waits for a preset period of time, and performs a hardware reset.   

When TRP-C37 working at unstable voltage industrial environment, the power detection circuit 

can prevent the power fail cause of the boot fail then auto re-boot. 

 

1-1 Features 

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Wide range DC input power supply.   

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Support watchdog function prevents system fail.   

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Support Auto-MDIX twisted pair crossover detection and Auto-Correction.   

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Maximum Connection 16 Client PC at Server Mode. 

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Auto fast Bi-direction RS485 hardware.   

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Surge protection and over current and over voltage on RS-422/485 data lines.   

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Support baud rate from1200~921600Kbps.   

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Auto switching RS-232/422/485 signal. 

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Virtual COM drivers for Windows 98/WIN2000/WIN XP/Vista/WIN2003/WIN 7.   

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Virtual Com Support Server, Client, UDP mode. 

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Fully compatible with Ethernet and TCP/IP protocol.   

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Supports 10/100 Mbps Ethernet.   

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Power/Link/RX/TX mode LED indicator.   

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Heart Beat function ensures a reliable communicating connection. 

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Auto Pair-mode when power or Ethernet fail. 

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Back to factory by external switch. 

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Support configuration by serial console.   

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Update the firmware from Ethernet. 

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Dual power input select from screw terminal or DC-jack. 

Summary of Contents for TRP-C37

Page 1: ...change without prior notice in order to improve reliability design and function and dosed not represent a commitment on the part of the manufacturer No part of this manual may be reproduced copied or...

Page 2: ...ly the watchdog timer waits for a preset period of time and performs a hardware reset When TRP C37 working at unstable voltage industrial environment the power detection circuit can prevent the power...

Page 3: ...z Stop Bits 1 1 5 or 2 z Protocol TCP IP ARP DHCP Telnet HTTP UDP ICMP z External switch OFF OFF TCP and VSP mode ON OFF Option OFF ON Option ON ON Back to Factory z Virtual Com mode support RS232 TXD...

Page 4: ...D indicator PWR LED System is ready Blinking LINK LED Ethernet cable connection and data active TX RX LED UART Transiting Receiving Indicator DC Jack Power Input DC 10V to 30V Pleas use the 5 5 2 1mm...

Page 5: ...5 OFF OFF Normal mode ON OFF Option OFF ON Option ON ON Back to factory 2 5 Factory Setting Factory Setting Adjust the external switch to ON ON will back to factory...

Page 6: ...onnected the LINK LED will light up The TRP C37 Support Auto MDIX A straight through or crossover RJ45 cable can be used to make a connection directly to the HUB Router PC LAN port STEP3 Connect TRP C...

Page 7: ...7 4 How to configure TRP C37 There are 3 ways to access the TRP C37 a TRP C37X DSM Software b WEB Server...

Page 8: ...8 c Serial Console...

Page 9: ...e Firmware upgrade help file D Saving and Loading Configuration from external log File or EEPROM 4 2 Searching LAN for TRP C37 Once TRP C37 is connected to the LAN the TRP C37X DSM software will searc...

Page 10: ...ion by DHCP server such router When DHCP is enabled but the DHCP server is not available on the network the TRP C37 will timeout then back to factory setting IP 192 168 1 1 Server Listening IP The TRP...

Page 11: ...interval to send out data char packet that provides a easy way to ensure the communications between Host PC Client and server devices Maximum Connection 1 16 The function allows the user to configure...

Page 12: ...the TRP C37 Serial Server from any web browser software such as I E In Internet Explorer type the IP Address of the Serial Server into the address field and press the Enter key The following window wi...

Page 13: ...1024 virtual com port Support Server Client UDP mode Support all Windows O S include Win98 Win2000 WinXP Vista Win2003 WIN7 Support Multi virtual com at different PC to one serial server Support Ethe...

Page 14: ...as Client support Server Device Step5 Select Create virtual serial by device scanner then press OK Step6 Run VCOMM exe then click right button select New Virtual COM Step7 Select Select Serial Port a...

Page 15: ...ng success the display will appear bellow Step9 Run TRPCOM utility then select virtual com port make a TRP C37 loop test If in VCOMM s configuration select Boot with windows the virtual com will Auto...

Page 16: ...de Keep DIP switch to the OFF OFF Position Example Step1 Connect PC Ethernet TRP C37 RS485 TRP C28 RS485 ID 01 Step2 Run TRPCOM utility and input IP Port click Link button then Send Command The Respon...

Page 17: ...Send Command 010003 The Response will enable TRP C28 Relay1 and Relay2 enable 6 2 Virtual COM Mode Keep DIP switch to the OFF OFF Position Example Step1 Connect PC Ethernet TRP C37 RS485 TRP C28 RS48...

Page 18: ...and make a virtual COM port Run TRPCOM utility and input com port number press OK Step3 Select Terminal and send command the response will appear TRP C28 channel 2 counter value 6 3 Paired Mode Keep D...

Page 19: ...C37 Ethernet TRP C37 RS422 loop back TX RX TX RX Step2 Run DSM set up TRP C37 Client Input destination IP and Port Step3 Run DSM set up TRP C37 Server and be sure the IP and port as same as client se...

Page 20: ...ow loop back Try to disconnect power or RJ45 cable the TRP C37 will Auto Re connection 6 4 Multi Client PC to 1 TRP C37 Server Keep DIP switch to the OFF OFF Position The function main support serial...

Page 21: ...et up TRP C37 Maximum connection 8 Step3 All host PC run TRPCOM and input IP Port click Link button then Send Command The Response will appear TRP C28 I O Status Running at Multi Virtual COM Mode Step...

Page 22: ...response will appear TRP C28 channel 2 counter value 6 5 Broadcast Mode The function main support serial data input to TRP C37 RS232 422 485 port if serial data is a mass of serial data over 1K Byte...

Page 23: ...6 6 Heart Beat The heart Beat function help customer detection the TRP C37 LAN on line or off line User can open one 5300 port if TRP C37 on line the 5300 port will send a char package period of 5 se...

Page 24: ...24 Step1 Run TRP C37X DSM exe to set up the heart beat enable Step2 RUN TRPCOM then click Link button Wait until the Response screen appear the message...

Page 25: ...IP Mode User may find the utility in the TRP C37 support CD Double click TRPCOM Utility the installShield Wizard will guide you complete installation User can directly link TRP C37 to TRP Serial Remo...

Page 26: ...26 RS422 Loop Test Hardware wiring connection for RS422 loop test TX to RX TX to RX RS232 Loop Back Test Hardware wiring connection for RS232 Loop Test TXD to RXD RTS to CTS...

Page 27: ...27 RUN TRPCOM test utility then connect correct IP and Port then click the Loop Test button 8 Application...

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