Communication
6.1 PROFIdrive Profile V4.1
Control Units CU240S
Operating Instructions, 07/2008 - FW 3.2, A5E00766042B AD
123
● Bits 0 to 10 (PNU) contain the remainder of the parameter number (value range 1 to
61999).
For parameter numbers ≥ 2000 it is necessary to add an offset which is defined with the high
byte bits (acyclic) or the low byte bits (cyclic) of IND.
● Bit 11 (SPM) is reserved and always = 0.
● Bits 12 to 15 (AK) contain the request or the response identifier.
The meaning of the request identifier for request telegrams (master → inverter) is shown in
the table below.
Table 6-1
Request identifier (master → inverter)
Response
identifier
Request
identifier
Description
positive negative
0
No request
0
7 / 8
1
Request parameter value
1 / 2
↑
2
Modify parameter value (word)
1
|
3
Modify parameter value (double word)
2
|
4
Request descriptive element
1)
3
|
6
Request parameter value (array)
1)
4 / 5
|
7
Modify parameter value (array, word)
1)
4
|
8
Modify parameter value (array, double word)
1)
5
|
9
Request number of array elements
6
|
11
Modify parameter value (array, double word) and store in EEPROM
2)
5
|
12
Modify parameter value (array, word) and store in EEPROM
2)
4
|
13
Modify parameter value (double word) and store in EEPROM
2
↓
14
Modify parameter value (word) and store in EEPROM
1
7 / 8
1) The desired element of the parameter description is specified in IND (2nd word)
2) The desired element of the indexed parameter is specified in IND (2nd word)
The meaning of the response identifier for response telegrams (inverter → master) is shown
in the table below. The request identifier will determine which response identifiers are
possible.
