Operating States Of The Cp 541; Power On - Siemens SIMATIC CP 541 Manual

Installing and Connecting the CP 541
3.4

Operating States of the CP 541

Introduction
Operating States
Summary of this
Section
3-6
You can subdivide the operational behavior of the CP 541 into individual
operating states and their transitions, as explained in following.
We subdivide the operational behavior into the following operating states and
state transitions:

POWER ON

POWER ON is understood to mean the behavior when the CP 541 has
been switched on (from 0 to STOP), or when operating voltage has been
restored.
STOP state
In the STOP state, you can use your PG to access both DBs in the CP 541.
START
The START serves to evaluate and store DB1 and activate the SINEC L2
interface.
RUN state
In the RUN state, the CP 541 executes the exchanging of data between
the connected programmable controller and SINEC L2.
Section
3.4.1 POWER ON
3.4.2 STOP State
3.4.3 START
3.4.4 RUN State
Contents
Communications Processor CP 541
EWA 4NEB 812 6188-02
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