Bachmann RS204 Interface Module

Product Description
The RS204 (Order Number: 00012220-00) is a communication expansion module for the Bachmann M1 automation system. It provides four independent high-performance serial interfaces in a single-slot housing, allowing the central processor to communicate simultaneously with multiple peripheral devices. Each channel supports standard industrial protocols and high-speed data exchange, enabling seamless integration of decentralized system components.

The RS204 ensures robust data integrity through galvanic isolation, protecting the M1 system bus from electrical noise and potential differences. Ideal for legacy hardware and modern serial instruments, it delivers deterministic performance in demanding industrial environments. Austrian-built hardware provides high-vibration resilience, making it suitable for energy, maritime, and other mission-critical sectors.

Technical Specifications

Application Scenarios

• Power plant control systems: Modbus RTU communication with meters and protection relays

• Maritime bridge systems: Aggregation of multiple NMEA 0183 sensors (GPS, wind, heading) into a single M1 controller

Technical FAQ

Q: Can I configure each of the four ports with a different protocol?
A: Yes. Each channel is independently configurable via Bachmann SolutionCenter. For example, one port can run as RS232 for a local terminal while another operates as RS485 multi-drop for field sensors.

Q: Does this module require special drivers for Modbus communication?
A: No special drivers are needed. The RS204 provides the physical layer, while Bachmann M-OS communication libraries supply ready-to-use function blocks for Modbus RTU Master/Slave operations.