Located above Ethernet Adapter (A22). Up to three (3) Serial Communications Adapter pc boards can be plugged into the Main Control Board (A1) at locations, P10, P11, and P12.

  • Supports DNP3 and Modbus protocols (A12), and can be configured to support 2-wire or 4-wire RS-232 connections, or 2-wire or 4-wire RS-485 connections.
Last modified: 7 September 2023