RS-485 (H/P) Communication Interface
Adds reliable long-distance serial communication with support for Modbus and Mitsubishi protocols.
The RS-485 (H/P) communication option enables stable, noise-resistant networking between your controller and multiple devices over a single twisted-pair cable. Terminals are provided as 485H (positive / A / +) and 485P (negative / B / –), ensuring compatibility with standard RS-485 wiring conventions.
This interface is ideal for connecting PLCs, HMIs, sensors, and drives in industrial automation systems. With support for Modbus RTU, Mitsubishi protocols, and other serial standards, it allows multi-drop communication of up to 32 devices across distances of up to 1200m. Shielded twisted-pair cabling is recommended for best performance, with optional termination resistors (120Ω) for long-line stability.