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3.3
Starting up the CP 541
Startup
Step
Action
1
Mount the CP 541 on the rail.
2
Make connections for a programmer, the
SINEC L2 and the power supply.
3
Switch the CP 541 to the STOP state.
4
Read DB1 into the programmer.
5
Make the necessary changes to DB1.
6
Transfer the modified DB1 to the CP 541.
7
Remove the programmer from the CP
541.
8
Assign parameters to the connected PLC.
9
Connect the CP 541 to the PLC with the
connecting cable.
10
Set the mode switch of the CP 541 to
RUN.
Switch the connected PLC to RUN.
Operation
Communications Processor CP 541
EWA 4NEB 812 6188-02
Proceed in the following order for the first startup.
See Section 3.1.
See Section 3.2
If you are restarting the CP 541 after an interval, connect the
PLC via the connecting cable instead of the programmer.
Skip Steps 4 to 7.
The CP 541 will be initialized (See Section 3.4.1).
Programmer operation is only possible in the STOP state.
DB1 is always present in the CP 541. After a reset, there is a
default DB1 in the CP 541.
You have defined the parameters to be changed in Chapter 4.
For normal operation, you must provide the connection to the
PLC.
DB1 will be stored after a STOP-RUN transition.
The exchange of data between the connected PLC and SI-
NEC L2 will begin.
After a successful start and initialization of the interfaces, the
green RUN LED lights up. The CP 541 is in the RUN state.
After startup, the CP 541 executes the exchanging of data.
Detailed information on the operating states of the CP 541 can be found in
Section 3.4.
Installing and Connecting the CP 541
Meaning
3-5
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