Yokogawa ACM11-S2 Subsystem Communication Module Datasheet

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Yokogawa ACM11 Subsystem Communication Module Configured for serial data integration in CENTUM VP and CS 3000 systems, the Yokogawa ACM11-S2...

SKU: ACM11

Manufacturer: Yokogawa
Product No.: ACM11
Product Type: Communication Modules
Product Origin: 日本
Payment:T/T, Western Union
Weight: 250g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Yokogawa ACM11 Subsystem Communication Module

Configured for serial data integration in CENTUM VP and CS 3000 systems, the Yokogawa ACM11-S2 (ACM11 Communication Module) provides direct physical and electrical execution for RS-232C, RS-422, and RS-485 interfacing.

Hardware Specifications

Parameter	Specification
Model	ACM11-S2
Brand	Yokogawa
Origin	Japan
Weight	0.25 kg
Dimensions	Standard FIO Module Form Factor
Operating Temp	-20 to +60 deg C
Power Consumption	Internal RIO backplane powered
Interfaces	RS-232C, RS-422, RS-485
Max Baud Rate	38.4 kbps

Process Control and DCS Instrumentation Integrity

The ACM11-S2 module maintains signal integrity through dedicated galvanic isolation between the field-side serial ports and the internal system backplane. This architecture prevents ground potential differences from affecting the RIO bus communication. The module utilizes internal processing to manage protocol translation, effectively offloading communication overhead from the main Field Control Station (FCS) processor. By supporting multi-drop RS-485 configurations and point-to-point RS-232C connectivity, the unit provides consistent data mapping of external subsystem registers into the host system image area.

Frequently Asked Questions

Q: Does the ACM11-S2 module support field-side termination for RS-485 networks?

A: Yes, the module requires appropriate termination resistors at the end of the RS-485 line to prevent signal reflection. Ensure that the line topology adheres to standard daisy-chain requirements for long-distance multi-drop configurations.

Q: Can the serial interface settings be modified while the module is active in the rack?

A: Configuration changes, such as baud rate and parity settings, require a download from the engineering station. Always confirm that the field device communication parameters match the ACM11-S2 software configuration to prevent data framing errors.

Field Installation Guidelines

Seat the ACM11-S2 firmly into the designated RIO rack slot until the latch mechanism engages.
Utilize shielded, twisted-pair cabling for all serial connections. Ensure the cable shield is terminated at the chassis ground point to minimize electromagnetic interference (EMI).
Observe the maximum cable length restrictions: 15 m for RS-232C and 1200 m for RS-485 to ensure signal stability.
Verify that pin-outs on the field cable connector match the module's terminal assignment documentation precisely to avoid electrical shorts.
Upon installation, monitor the front-panel status LEDs. A steady indication confirms that the module has passed self-diagnostics and has established a handshake with the host RIO bus.

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