SST Technologies SST-PFB-PLC5 Profibus Backplane Communication Module

The SST-PFB-PLC5 Profibus Backplane Communication Module is a Profibus DP coprocessor designed to mount on an Allen-Bradley PLC-5 backplane, enabling the PLC-5 to operate as a Profibus DP master/scanner on a DP network and to exchange data with Profibus devices across multi‑vendor equipment. The module provides a Profibus DP interface via a female D-sub 9-pin connector and configures through an onboard RS-232 port; LED indicators show status and the rugged metal housing is built for industrial environments. Manufactured by SST (Woodhead/Molex lineage), the SST-PFB-PLC5 is described in user guides as a ProfiBus coprocessor bridging the PLC-5 controller to DP devices and supporting master/scanner operation on Profibus DP networks. As a legacy backplane module, it is commonly encountered in older PLC-5 installations and is often cataloged as End-Of-Life by vendors, reflecting its status as a historical solution for integrating PLC-5 systems with Profibus-DP networks.