Determining The Drive Object Numbers; Example 1: Reading Parameters - 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
2. Depending on the result of the initial read request, further read requests on drive object 1
3. Following this, parameter r0107/p0107 ("Drive object type") is read for each drive object
4. From here, the list of parameters applies to the particular drive object.
6.7.4.3

Example 1: Reading parameters

Preconditions
1. The PROFIdrive controller has been commissioned and is fully operational.
2. PROFIdrive communication between the controller and the device is operational.
3. The controller can read and write data records in conformance with PROFIdrive DPV1.
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.
Converter cabinet units
Operating Instructions, 03/2012, A5E03263466A
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.
are used to read the indices of parameter p0101 ("Drive object numbers"), as specified by
parameter r0102.
Example:
If the number of drive objects that is read out is "5", then the values of indices 0 to 4 of
parameter p0101 are read out. The relevant indices can also be read at once.
Note
The first two points provide you with the following information:
• The number of drive objects present in the drive system
• The drive object numbers assigned to these drive objects
(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 Communication according to PROFIdrive
Operation
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