SA Bus - BCPro - LIT-12011908 - General System Information - BCPro System - 4.0

MS/TP Communications Bus for the BCPro System Technical Bulletin

Product name
BCPro System
Document type
Technical Bulletin
Document number
Revision date

The SA bus connects CH-PC controllers to endpoint devices, such as CH-PCX Expansion I/O Modules, network sensors, FX-DIS Local Controller Displays, and Johnson Controls Variable Speed Drives (VSDs).

On an SA bus, a CH-PC controller is the bus supervisor. The SA bus is a private MS/TP bus that only supports those devices that can be defined using the Controller Configuration Tool (CCT) programming tool. The bus does not support bus segments (Figure 1). See SA Bus Rules and Specifications for more information.