Rockwell Automation MBB BUS Extender Module - Manual

Triguard SC300E
MBB
Bus Extender Module
(MBB)
Issue 4 October 2006
INTRODUCTION AND TECHNICAL DATA
PURPOSE
An MBB Bus Extender Module is located in each of the three right-hand slots of any local
extension chassis that is not connected to a remote extension chassis. The three MBBs (A, B
and C) provide an opto-isolated interface between the I/O modules in the extension chassis
and the processor modules (MPPs) in the main chassis.
Figure 2-1 shows how the MPPs and MBBs are all linked by ribbon cables running between
expansion bus connectors ‘A’, ‘B’ and ‘C’ on the chassis backplanes. Up to 14 extension
chassis can be linked to a single main chassis in this way.
This document is intended to provide a general understanding of the function of the bus
extender module sufficient to enable basic maintenance operations to be effected in the field
ASSOCIATED DOCUMENTATION
Reference No Title
008-5097 Chassis User Manual
008-5100 MPP Processor Module User Manual
008-5115 TBA Bus Expansion Adaptor User Manual
008-5217 TBT Bus Terminator User Manual
008-5105