Description
The YOKOGAWA ALR121-S00 is a serial communication module designed for industrial automation applications. It allows a Field Control Station (FCS) or a Safety Control Station (SCS) to communicate with various subsystems and devices using serial communication protocols.
Here’s a breakdown of the YOKOGAWA ALR121-S00’s key features and functionalities:
Functionality:
- Enables serial communication between an FCS/SCS and subsystems like sequencers, PLCs (Programmable Logic Controllers), or other industrial devices.
- Provides data exchange between the control station and other systems for process control, monitoring, and configuration purposes.
Specifications (based on available information):
- Interface: RS-422/RS-485 (selectable, supports both point-to-point and multipoint configurations)
- Communication Function: Half-duplex
- Synchronization Method: Start-stop synchronization
- Transmission Speed: 1200, 2400, 4800, 9600, 19200, 38400 bps (selectable)
- Transmission Code: ASCII/Binary (selectable)
- Character Length: 7 or 8 bits (fixed to 8 bits for Modbus communication function)
- Stop Bit Length: 1 or 2 bits (fixed to 1 bit for subsystem communication function)
- Parity Check: None/Even/Odd (selectable)
- Maximum Transmission Distance: Up to 1200 meters (total extended length in multipoint RS-485 configuration)
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