The ALR121-S00 Yokogawa module is a serial communication module with RS-422/RS-485 interface and 2 ports. The following is detailed information about ALR121-S00:

Technical specifications

Communication function: half duplex

Transmission code: binary

Weight: 0.34 kilograms

Specification: 213265

Synchronization method: Start stop synchronization

Color: Standard

Characteristic: Stable

Interface and Connection

I/O node connection methods: CPU node I/O node (redundant ECB bus connection) and remote I/O node (optical cable connection)

Remote I/O distance: 5/50KM

Better configuration: 1 CPU node and 9 I/O nodes

System composition

Human Interface Station (HIS) operating station: used for running operations and monitoring, using Microsoft’s Win7/Windows ® Vista as the operating system.

Field Control Station (FCS) field controller: used for process I/O signal processing, to complete real-time control and calculation functions such as analog regulation, digital and sequential control, logic operation, batch control, and advanced calculation.

Engineering Station (EWS): used for designing configurations, simulating debugging, and monitoring operations, also using Microsoft’s Win7 operating system.