Siemens SIMATIC HMI SICALIS PMC 7, Equipment Manual

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Interfaces and Terminals – Assignments
B-5
SICALIS PMC 7 Operator Panel Equipment Manual
Release 09/00
B.3 Control Panel Interface
Purpose
The standard SICALIS PMC 7 Operator Panel is equipped with two CPI modules
(CPI = Control Panel Interface). Together the two modules provide 32 digital
Inputs/Outputs. Fundamentally, a CPI module permits rapid key operation without
communication-related delays (key delay < 100 ms).
However, the digital inputs and outputs are not electrically isolated from the
operator panel.
The Bus Terminal Strip Assignment
Each CPI module is equipped with a bus terminal strip with 36 terminals to connect
the I/O leads and the external voltage supply. By default, the voltage supply is
already connected.
Figure B-1 shows the position of the bus terminals.
Figure B-1 CPI Bus Terminals