TheDSBC 170 (DSBC170)is a high-speed Bus Repeater Master PC Board manufactured by ABB for the foundational Advant Master DCS and MasterPiece 200/1 controller subrack architectures. This specialized communication card acts as the primary master interface designed to extend and replicate the parallel backplane bus data lines across multiple physical equipment frames.
Technical Specifications
Manufacturer: ABB
Product Line / System: Advant Master DCS / S100 I/O System
Model Designation:DSBC 170(Also written as DSBC-170 / DSBC170)
Device Function: Bus Repeater Master Module / Backplane Extension Interface
Device Classification: PLCs/Machine Control — PLC Module/Rack
Communication Topology: Pairs with downstream bus repeater slave boards (e.g., DSBC 172)
Signal Type: Multi-channel parallel bus replication with clock synchronization
Life-Cycle Status: Discontinued by Manufacturer
Product Net Weight: 0.40 lbs (approx. 0.181 Kg)
Industrial Application Scenarios
TheDSBC 170 (DSBC170)master repeater card is widely deployed in large-scale industrial control rooms, paper machine line enclosures, water treatment facilities, and power plant distribution racks running legacy ABB architectures. In complex facilities where a single central CPU must monitor thousands of field points, the I/O modules easily overflow the local cabinet frame. This master repeater board is inserted into the main processor subrack, functioning as the communication bridge that allows the CPU to seamlessly access and control external expansion racks located farther down the cabinet array as if they were part of the local backplane.
