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A1SJ71UC24-R4

The A1SJ71UC24-R4 is a high-performance serial communication module for Mitsubishi's MELSEC-A Series PLCs, providing RS-232C/RS-422/RS-485 interfaces with enhanced protocol flexibility for industrial automation systems.

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Key Features
Dual-Port Communication

2 independent serial ports (CH1: RS-232C, CH2: RS-422/485)

Baud rates up to 230.4kbps (software configurable)

Protocol Support

MELSEC communication protocol (MC protocol)

Non-protocol communication (custom ASCII/hex)

Bidirectional communication (full/half duplex)

Advanced Functions

2KB buffer memory per channel

Modem control signals (DTR,DSR,RTS,CTS)

Error detection/counters for diagnostics

Technical Specifications

Isolation: Photocoupler (PLC ↔ ports)

Power consumption: 5VDC 0.6A

Operating temperature: 0°C to 55°C