TRP-C68H     Isolated 8 Channel Analog Input Modbus TCP Module Support TRP-ASCII, Modbus RTU/ASCII protocol


The TRP-C68H is an 8-ch analog Input differential isolation module that can read the voltage or current value from the web-based. 
The user can read the Analog input value from the web-based that includes the smartphone.
Each channel allows the user to input the DC voltage or current.
The watchdog function ensures TRP-C68H can running very stable without the firmware crash.
the We built-in safety surge protection prevents the spark and damage analog chipsets at each channel.
There are 3 protocols auto-detect that include ASCII and Modbus TCP RTU / ASCII.
The watchdog function ensures running stable in the harsh environment.
It allows connecting 1~8 sets of host IP in the network security.


  •    Wide input range DC power supply.
  •    Automatically determine 3 TRP-ASCII and Modbus RTU/ASCII communication protocol.
  •    16 TCP Port can be open at the same time.
  •    Heart Beat function ensures a reliable communicating connection.
  •    Maximum 8 sets host IP that limits network access.
  •    Support Virtual-COM mode.
  •    The web-based can be directly read analog value status.
  •    It is easy to update the firmware by LAN interface.
  •    Back to factory configuration by external touch button.
  •    Auto reconnection when power or Ethernet fail.
  •    Digital input signal from +/- 0 to 30V DC.
  •    Built-in surge absorbers in each relay N.C and N.O.
  •    Built-In watchdog function prevents system boot fail. 
  •    LED for each I/O channels working status.
  •    Support Auto-MDIX twisted pair crossover detection and Auto-Correction.
  •    Power/Link LED indicator.
  •    DIN-Rail and panel mount support.
  •    Dual power input selects from screw terminal or DC-Jack.


  • Resolution: 16 bit/24bit.
  • Sample rate: 24 BIT Normal mode: 10 sample / sec.
  •                    16 BIT Fast Mode: 60 sample / sec.
  • Bandwidth: Normal Mode: 15.72Hz.
  •             Fast Mode:/78.72Hz.
  •             Zero drift: 0.03uV/C .
  •             Span drift: 25 ppm/C.
  • Accuracy: Normal 0.1 or better.
  •                         Fast: 0.5 or better.
  • Analog Input range: Voltage:±10V,±5V,±2.5V,±1.25V,±650mV..
  •                     Current: +/-20mA. CMRR:92 db min/50/60Hz
  • Analog input over voltage protection: +/- 48V.
  • Power Input Voltage DC +10V to +30V.
  • Protocol: TRP-ASCII and Modbus RTU/ASCII.
  • Input channel:8-ch analog Input differential
  • Input optical isolation: 3750 Vrms.
  • Communication interface: Ethernet RJ45.
  • Configuration mode: Device Manager, WEB settings.
  • Heart Beat: TCP Port sent string every 5 seconds.
  • TCP Maximum Connection:1~16.
  • Module ID: 1~255.
  • Connection type: Screw terminal for maximum AWG 12 wire.
  • Power supply: Screw terminal, or external DC adapter.
  • Power consumption 320mA/12V.
  • Operating environment: 0 to 50℃.
  • Storage temperature: -10 to 70℃.
  • Humidity: 10~90% Non-condensing.
  • Dimension: 151mm X 75mm X 26mm.
  • Weight: 395g.


PWR-AD12VAuto (Option)

Switching Adaptor

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

DIN-RAIL-R (Option)

DIN rail mounting adapter