Technical Specifications Communication Port:2×RS232/RS422/RS485 configurable serial ports Backplane Power Consumption:330mA @5VDC Isolation Voltage:1500V RMS Operating Temperature:0℃～+60℃ Storage Temperature:-40℃～+85℃ Relative Humidity:5%‑95%, non‑condensing Certifications:CE, UL, cUL
Functional Features Independent communication coprocessor processing, dual configurable serial ports, multi‑industrial protocol support, communication task offload for main CPU, front‑panel link‑fault LED status indication, online communication diagnostic function.
Application Scenarios Series 90‑70 multi‑serial‑device connection, HMI serial communication, third‑party instrument data interaction, legacy process control equipment.
Performance Parameters Independent communication task processing without occupying main CPU scan resource Serial port communication fault detection Shock & vibration:Comply with IEC 60068
Structural Characteristics Standard Series 90‑70 plug‑in rack module Front‑panel LED indicators for port activity and fault status Dual serial signal terminal connectors Backplane gold‑finger bus contact Internal independent coprocessor and protocol processing circuit Mechanical locking latch
Working Principle Module exchanges data with Series 90‑70 main CPU via backplane bus. Independent on‑board coprocessor undertakes all serial communication protocol processing work without consuming main CPU scan time.
Installation Requirements Insert module into idle slot of Series 90‑70 chassis. Complete cabinet protective grounding. Configure serial port hardware mode and communication protocol via programming software. Use shielded serial communication cables. Keep serial cables separated from high‑voltage power wiring.
Usage Notes Set serial port parameters consistent with external field devices. Check LED indicators for communication fault troubleshooting. On‑site disassembly is prohibited. Avoid corrosive gas and liquid splash.
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