Satchwell Modbus/JBUS Protocol Interface Unit Manual

This document describes the Modbus/JBUS Protocol Interface Unit (PIU) for the Satchwell Building Automation System, which enables integration with third-party monitoring and control equipment using Modbus or JBUS protocols. The PIU acts as a configurable communications interface, mapping up to 350 third-party data points to standard BAS I/O points for monitoring, control, and alarm management.