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Installing and Connecting the CP 541
3.4.2
STOP State
Meaning
RUN LED
Programmer
Operation
DB1
DB2
3-8
In the STOP state, the CP 541 is initialized and the interface for the con-
nected programmable controller is not activated.
In the STOP state, the RUN LED flashes at 2 Hz.
In the STOP state, you can connect a programmer to the CP 541. The pro-
grammer allows you to access the two data blocks DB1 and DB2.
The PG interface is activated in the STOP state.
DB1 is the initialization block. You store the parameters for the CP 541 there.
With the entries in DB1, you affect the operational behavior and interchange
of data between the connected programmable controller and SINEC L2.
A full description of DB1 can be found in Appendix C.
DB2 is the diagnostics block. The CP 541 stores the determined diagnostic
data there. You can only read out DB2.
By means of the diagnostic data, you can establish whether there are errors in
the CP 541 or in the two communication interfaces.
A full description of DB2 can be found in Section 6.2.
Communications Processor CP 541
EWA 4NEB 812 6188-02
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