Determining The Drive Object Numbers - Siemens SINAMICS G150 Operating Instructions Manual

6.7.4.2

Determining the drive object numbers

Further information about the drive system (e.g., drive object numbers) can be determined
as follows from parameters p0101, r0102 and p0107/r0107:
1. The value of parameter r0102 ("Number of drive objects") is read via a read request from
drive object 1.
The drive object with drive object number 1 is the Control Unit (CU), which is always
present in every drive system, as a minimum.
2. Depending on the result of the initial read request, further read requests to drive object 1
are used to read the indices of parameter p0101 ("Drive object numbers"), as specified by
parameter r0102.
Example:
If the number of drive objects is "5", the values of indices 0 to 4 of parameter p0101 are
read. The relevant indices can also be read at once. The relevant indices can also be
read at once.
3. Following this, parameter r0107/p0107 ("Drive object type") is read for each drive object
(indicated by the drive object number).
Depending on the drive object, parameter 107 can be either an adjustable parameter or a
display parameter.
The value in parameter r0107/p0107 indicates the drive object type. The coding for the
drive object type is specified in the parameter list.
6.7.4.3 Example 1: Reading parameters
Preconditions
● The PROFIdrive controller has been commissioned and is fully operational.
● PROFIdrive communication between the controller and the device is operational.
● The controller can read and write data sets in conformance with PROFINET/PROFIBUS.
Task description
Following the occurrence of at least one fault (STW1.3 = "1") on drive 2 (also drive object
number 2), the active fault codes are to be read from the fault buffer r0945[0] ... r0945[7].
The request is to be handled using a request and response data block.
Basic procedure
1. Create a request to read the parameters.
2. Invoke request.
3. Evaluate response.
Converter cabinet units
Operating Instructions, 07/2016, A5E03347396A
6.7 Communication according to PROFIdrive
Operation
331