Lenze 931W - Manual (Page 43)

Parameter channel (PCV mechanism)
Job and response processing
Job identification (master -> slave)
7

43 K-HB 13.0001-EN 2.1
7.3 Job and response processing
The job and response processing is defined so that the identification shows which fields of
the PCV interface (IND,PWE) must be evaluated. Moreover, a distinction is made between
parameter value and parameter description.
7.3.1 Job identification (master -> slave)
To change a parameter value the slave must receive a job identification from the master
(see Tab. 19). This job identification depends on the data type or format to be changed
(word, double word, array).
After the slave has received and executed the job successfully, a corresponding response
is generated (see Tab. 20), which also shows transmission errors. The response data is
available at the slave as long as a new job is transmitted.
Job identification Function Response identification
Positive
Negative
0 No job 0
1 Request parameter value 1, 2 7
2 Change parameter value (word) 1 7, 8
3 Change parameter value (double word) 2 7, 8
4 Request describing element (double word) 3 7
5 Change describing element 3 7, 8
6 Request parameter value (array) 4, 5 7
7 Change parameter value (array word) 4 7, 8
8 Change parameter value (array double word) 5 7, 8
9 Request number of array elements 6 7
Tab. 19 Overview of job identifications