Siemens SINAMICS S120 Function Manual page 400

Communication PROFIBUS DP/PROFINET IO
10.1 Communications according to PROFIdrive
2. Invoke the request.
3. Evaluate the response.
Activity
1. Create the request.
Parameter request
Request header
parameter address
Information about the parameter request:
● Request reference:
● Request ID:
● Axis:
● No. of parameters:
● Attribute:
● No. of elements:
● Parameter number:
● Subindex:
2. Invoke the parameter request.
If STW1.3 = "1" ––> Invoke parameter request
3. Evaluate the parameter response.
Parameter response
Response header
400
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 current fault incident with 8 faults is to be read.
945 dec ––> p0945 (fault code) is read.
0 dec ––> Read access starts at index 0.
Request reference mirrored
= 25 hex
Axis mirrored = 02 hex
No. of parameters = 01 hex
No. of elements = 08 hex
Response ID = 01 hex
No. of parameters = 01 hex
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4
Offset
0 + 1
2 + 3
4 + 5
6
8
Offset
0 + 1
2 + 3
Drive Functions