Siemens SINAMICS G150 Operating Instructions Manual page 332

Operation
6.7 Communication according to PROFIdrive
Basic procedure
1. Create a request to read the parameters.
2. Initiate the parameter request.
3. Evaluate the parameter response.
Execution
1. Create a request to read the parameters
Table 6- 21
Parameter request
Request header
Parameter address
Information about the parameter request:
● Request reference:
● Request ID:
● Axis:
● Number of parameters:
● Attribute:
● Number of elements:
● Parameter number:
945 dec → p0945 (fault code) is read.
● Subindex:
0 dec → Reading starts from index 0.
2. Initiate parameter request
If STW1.3 = "1" → Initiate parameter request
3. Evaluate the parameter response
330
Parameter request
Request reference = 25 hex Request ID = 01 hex
Axis = 02 hex
Attribute = 10 hex
Parameter no. = 945 dec
Subindex = 0 dec
The value is selected at random from the valid value range. The request reference
establishes the relationship between request and response.
01 hex → This identifier is required for a read request.
02 hex → Drive 2, fault buffer with drive- and device-specific faults
01 hex → One parameter is read.
10 hex → The parameter values are read.
08 hex → The actual fault case with 8 faults is to be read.
Number of parameters = 01 hex
Number of elements = 08 hex
Operating Instructions, 03/2012, A5E03263466A
Offset
0 + 1
2 + 3
4 + 5
6
8
Converter cabinet units