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Description of the DP Functions, Data, and Error Codes

DP Base Programming Interface for CP 5613/CP 5614

C79000-G8976-C108-01

147

Reading without Consistency

To read without consistency, the locking and release of the data area are simply

omitted.

General Notes

Warning

The lock is canceled by the following:



Locking a different slave to read its input data (Section 4.3.1)



Locking a different slave to read its diagnostic information



Triggering a job to write the output data of a slave using the corresponding

control register (Section 4.3.3)

Note 1

The data is only valid when the master is in the STOP, OPERATE, or CLEAR/

AUTOCLEAR mode and the slave is configured in the current database.

Note 2

The memory area with index 127 contains the data of the slave module of the

CP 5614.

Note 3

Based on the diagnostic counter, you can recognize whether or not new diagnostic

data have been received. The diagnostic counter is incremented each time a

diagnostic message is received.

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Siemens SIMATIC NET PROFIBUS Manual de Serviço Página 147