1C31166G02 Digital Input Module

Emerson 1C31166G02 Digital Input Module (Ovation DCS Core Component)

core parameters
Specific description of parameter categories
Complete models 1C31166G02/1C31169G02 (replaceable within the same series)
Brand Emerson/predecessor Westinghouse
Ovation DCS Distributed Control System
Module Type Serial Link Controller (EMOD+PMOD)
Processor R1120 CPU
Communication interface RS-485 (4-wire system, main interface)+RS-232 (partially configured ports)
Transmission rate RS-232 up to 115 kbps; RS-485 maximum 3.125 Mbps
Supports protocols Modbus, DNP3, Profibus DP, EtherNet/IP, Profinet
Working voltage 24 V DC (typical)
Working temperature -40 ° C~+70 ° C
Storage temperature -40 ° C~+70 ° C
Protection level IP20
SIL3 security certification (released with Ovation 3.3.1 and later versions)
Anti vibration 0.7g (13.2-150 Hz)
Anti impact 10g half sine wave, 11ms
Redundant support ✅ Support hot swapping
Communication delay<1 ms
core functionality

Function Description
Link control provides reliable data transmission between various components of the DCS network (PLC, I/O modules, special control modules)
Third party devices integrate and connect external systems/third-party devices, serving as a “bridge” between Ovation and Modbus/DNP3/Profibus devices
System synchronization assists in controlling signal exchange, process data transmission, and overall network operation synchronization
Under the configuration of the digital quantity acquisition part, it can receive on/off status signals of switches, buttons, limit switches, relay contacts, etc. (this is also the reason why it is labeled as the “digital quantity input module”)
Channel diagnosis supports channel level diagnostic functions such as wire breakage detection, signal jitter filtering, and status latch
hardware interface
Description of interface quantity
RS-485 (RJ45) 1 (main communication port, 4-wire system) maximum 3.125 Mbps
RS-232 (RJ45) 1 (configuration port) up to 115 kbps, with modem control signal
Backplane bus CEX+Modulus Bus connects Ovation S800 I/O module and communication module
Front panel LED displays real-time ON/OFF status for each channel indicator light
Typical application scenarios
Specific applications in the field
DCS communication and grid frequency regulation for thermal power plants/new energy power plants in the power industry
Automated monitoring of water treatment plants/sewage treatment plants, connected to third-party instruments
Data bridging between PLC and DCS in chemical/metallurgical process control
Manufacturing production line equipment status collection, third-party equipment (such as frequency converters, smart meters) access
Communication between the signal system and control system of rail transit