Efficient Networks Siemens Sinamics S120 - Manual (Page 400)

Communication PROFIBUS DP/PROFINET IO
10.1 Communications according to PROFIdrive
Drive Functions
400
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4
2. Invoke the request.
3. Evaluate the response.
Activity
1. Create the request.
Parameter request Offset
Request reference = 25 hex Request ID = 01 hex 0 + 1 Request header
Axis = 02 hex No. of parameters = 01 hex 2 + 3
Attribute = 10 hex No. of elements = 08 hex 4 + 5
Parameter no. = 945 dec 6
parameter address
Subindex = 0 dec 8
Information about the parameter request:
● Request reference:
The value is selected at random from the valid value range. The request reference
establishes the relationship between request and response.
● Request ID:
01 hex ––> This identifier is required for a read request.
● Axis:
02 hex ––> Drive 2, fault buffer with drive- and device-specific faults
● No. of parameters:
01 hex ––> One parameter is read.
● Attribute:
10 hex ––> The parameter values are read.
● No. of elements:
08 hex ––> The current fault incident with 8 faults is to be read.
● Parameter number:
945 dec ––> p0945 (fault code) is read.
● Subindex:
0 dec ––> Read access starts at index 0.
2. Invoke the parameter request.
If STW1.3 = "1" ––> Invoke parameter request
3. Evaluate the parameter response.
Parameter response Offset
Request reference mirrored
= 25 hex
Response ID = 01 hex 0 + 1 Response header
Axis mirrored = 02 hex No. of parameters = 01 hex 2 + 3