Overview

The YOKOGAWA ACM12 Communication Module is a versatile device designed for serial communication in industrial automation systems. It features an RS-422/RS-485 interface that supports both point-to-point and multipoint connections, ensuring reliable data transmission.

Technical Specifications

Interface

• RS-422/RS-485: 1 port
• Connection Method: Point-to-point, Multipoint
• Communication Mode: Half-duplex
• Synchronization: Start-stop synchronization
• Communication Speed: 1200/2400/4800/9600/19200 bps
• Transmission Code: ASCII/Binary
• Character Length: 7/8 bit
• Stop Bit Length: 1/2 bit
• Parity Check: None/Odd/Even (Note: “No parity” not available at 19200 bps)
• Signal Reception Delay: 1 ms (standard); immediate in special cases
• Transmission Distance: Max. 1200 m (total length)

Installation

• Installation: Installed in the Communication Module Nest (cannot be combined with ACF11; ACM11 can be combined with ACM12)
• Wiring: Uses 3 pairs shielded cable or AKB161 (for connecting ACM12 with FA500; max. 100 m)
• Connector Type: Dsub 25 pin (female), connected to the terminal (6 poles) with M4 screws

Power Consumption

• Current Consumption: 1 A (5.0 V DC)