ABB 07KP93 GJR5253200R1161 Modbus Communication Module Buyer's Guide

Both ports support EIA RS-232 or RS-485, but they can be configured independently. For example, COM3 can act as a master while COM4 operates as a slave, or both can be slaves. Master-master mode is not supported. **Q2: Can the 07KP93 be used with other ABB controllers besides AC 31?** The module is specifically designed for the Advant Controller 31 system. Communication with AC 31 basic units is performed using function blocks and connection elements from software 907 KP 93. For other controllers, consult ABB documentation. **Q3: What does the ERR LED indicate?** The red ERR LED signals an error condition. Refer to the module's manual for specific error codes. The RUN (green) and Supply (green) LEDs provide additional status information. **Q4: Is electrical isolation provided between the serial interfaces?** Yes, the interfaces are electrically isolated from each other and from the rest of the unit, which helps protect against ground loops and noise. **Q5: What is the maximum cable length for RS-485 connections?** While not specified in the data, standard RS-485 practice supports up to 1200 meters. Ensure proper termination and grounding per EIA RS-485 guidelines.