Parameter channel (pcv mechanism), Subindex, Parameter value – Lenze 931W User Manual
Page 47
Parameter channel (PCV mechanism)
Job and response processing
Examples of PCV mechanism
7
47
K-HB 13.0001-EN
2.1
Example 2: Reading the set speed
To read the set maximum speed out of the drive, the parameter is requested from the
inverter.
Here, the parameter identification consists of the value 6 in the job identification for
requesting the parameter value, see Tab. 19, and the driving record number as PNU, e.g.
driving record 1, see chapter data type driving record 1 to 100 ( 61). The subindex
contains the number of the parameter to be requested, see ( 61), subindex 1 for
maximum speed.
Parameter identification:
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Binary value
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
1
Hexadecimal value
6
0
0
1
Request parameter
value
PNU
Subindex
Bit
7
6
5
4
3
2
1
0
Binary
value
0
0
0
0
0
0
0
1
Parameter value
Byte
7
6
5
4
3
2
1
0
Value
0000
0000
0000
0000
0000
0000
0000
0000
As response identification a 4 is output as job identification, and the PNU, in this case 001
is output for driving record 1, see Tab. 20. This means: Transmit parameter value (array
word).
Response identification :
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Binary value
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
1
Hexadecimal value
4
0
0
1
Transmit describing
element
PNU
Subindex
Bit
7
6
5
4
3
2
1
0
Binary
value
0
0
0
0
0
0
0
1
Parameter value, e.g. for 6000 1/min
Byte
7
6
5
4
3
2
1
0
Value
0000
0000
0000
0000
0001
0111
0111
0000