Part Code Definition

1C31xxx: Ovation I/O module series code

169: Serial communication board model number

G02: Hardware revision version 02

Technical Specifications

Backplane 5VDC powered, typical power consumption: 4.1W

Dual independent serial ports: 1×RS232 + 1×RS485; half/full duplex configurable

Baud rate: 300~115200bps; data bit/parity/stop bit programmable

Isolation: 1500VAC galvanic isolation between serial ports and system backplane

Operating range: -40℃ ~ +70℃, 5%~90%RH non-condensing; hot-swap available

Net weight: approx 0.53kg

Interface & Communication Layout

Rear edge connector plugs into Ovation rack backplane for internal bus communication

Front DB9 terminals for RS232 and RS485 field wiring

Front panel LEDs: RUN, FAULT, TX/RX status per port

Core Functions

Protocol conversion between Ovation internal bus and Modbus-RTU / customized serial protocols

Data collection from third-party PLC, excitation regulators, smart meters and field RTUs

Downlink DCS control commands to serial field equipment

Self-diagnosis for open wire, short circuit and offline slave; fault messages auto uploaded to Ovation controller

Communication parameters editable via Ovation configuration software online

Application Scenarios

Generator excitation system communication, boiler auxiliary PLC docking, compressor controller data access in power plants; petrochemical remote RTU integration, DCS renovation & spare stock.

Operation & Maintenance Notes

Use shielded twisted pair for serial wiring with single-point cabinet grounding

Keep serial cables separated from high-power AC cables to reduce EMI

Install 120Ω terminating resistor at two ends of RS485 trunk; check connection status periodically during routine inspection