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TRP-C37M  Modbus TCP To RTU/ASCII Gateway

The TRP-C37M which is able to analyzes the protocols between Modbus TCP and Modbus RTU / ASCII. It able to assign the UID of Modbus TCP slave from Modbus Serial Master.

The TRP-C37M which is suitable industrial environment Ethernet serial server, wide range power input and serial communicate protection, It Built-in surge, over current, over voltage ensure RS422 / 485 serial communication quality; if user lost password that can fast back to default by external switch.

The TRP-C37M can as serial server that support 3 operates mode, "Direct IP Mode", "Virtual COM Mode", and "Paired Mode", these modes are supported Modbus RTU / ASCII protocols.

The TRP-C37M 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.

The TRP-C37M provides a watchdog timer function, The Watchdog timer allows the system to automatically recover from a system crash. When the TRP-C37M MCU stop working correctly, the watchdog timer waits for a preset period of time, and performs a hardware reset .

When The TRP-C37M working at unstable voltage industrial environment, the power detection circuit can prevent the power fail cause of the boot fail then auto re-boot.

The TRP-C37M will be auto detects function which will be auto connect when the LAN disconnect then re-connect or power off then power on.

In network security, the TRP-C37 is able to set up 8 sets host IP, only these host IP can access the TRP-C37.


  • Wide input range DC power supply.

  • Built-In watchdog function prevents system boot fail. 

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

  • Modbus Type support TCP Master to Serial Slave and TCP Slave to Serial Master.

  • Support 1 serial master  to 8 TCP slave ,each TCP slave can free set up UID from 0~256.. 

  • Compatible with    Modscan32 ,Modbus Poll,CAS Modbus Scanner and SCADA .. application.

  • Support virtual com maximum connection 16 client.

  • Maximum 8 sets host IP that limits network access.

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

  • Support baud rate from1200~921600Kbps.

  • Auto switching RS-232/422/485 signal interface.

  • Fully compatible with Ethernet and TCP/IP protocol.

  • Supports 10/100 Mbps Ethernet.

  • Power/Link/UART RX/UART TX mode LED indicator.

  • Heart Beat function ensures a reliable communicating connection.

  • Auto reconnection when power or Ethernet fail.

  • Back to factory configuration by external switch.

  • Support configuration by serial console.

  • Update the firmware from LAN.

  • Dual power input select from screw terminal or DC-Jack.



  • Power Input Voltage: DC +10V to +30V.

  • LAN: Auto-MDIX, 10/100 Mbps Auto-detecting.

  • Modbus TCP Type: TCP Master and slave.

  • Virtual COM drivers for Windows 98/WIN2000/WIN XP/Vista/WIN2003/WIN 7/WIN 8/WIN 8.1 and WIN10.

  • External touch button: Back to factory.     .

  • Power supply: Screw terminal, or DC jack.

  • Configuration mode: Trycom Device Manager, WEB settings.

  • Plug-in screw terminal wiring: Accepts AWG #12 ~30 wires.

  • Power consumption: 12V/140mA.

  • Operating Temperature: -10 to 65 XC.

  • Humidity: 0~90% Non-Condensing.

  • Dimensions: 151(L)*75(W)*26(H) mm.

  • Weight: 395g with packing.


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Input:100~240VAC 50/60Hz 260mA

Output: DC 12V/1A

Certificate: CE, FCC, UL, PSE

US Specification  

We also provide the EU / AUS / British specifications(MOQ:50PCS/2 Weeks)......more

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