MSA SUPREMATouch MCP 20, Руководство по эксплуатации

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171
Installation
GB
SUPREMATouch
12.13 System Ports (MST Module)
The system expansions and system connections described in the following can be realised by
using the MST module, plugged into the rear of the rack.
Fig. 108 MST Module Connections
Fig. 109 SUB-D pin assignment
For simplification of the CAN bus connection at systems with several racks, the MST module has
been revised. For every CAN bus an additional connection was added so that the T pieces are
saved when connecting racks (Chapter 12.8 "Systems Consisting of Several Racks").
CAN Bus Ports (CAN-A/CAN-B)
The two system buses in the system, i.e., CAN-A and CAN-B, are provided to allow expansion of
the system (systems with several racks). The measurement value input (MDA + MAI module) or
the switching outputs (MGO module) can be set up separately from the main rack to reduce the
cabling. In systems without redundancy, the individual racks are connected to each other by
ready-made CAN bus cables via the CAN-A bus port (Chapter 12.7 "System Configuration (Hard-
ware)").