IMPULSE®•G+/VG+ Series 4 Profinet Installation Manual - August 2014
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PROFIdrive Acyclic Parameter Access Mechanism
A PROFIdrive acyclic parameter access mechanism can be used to access PROFIdrive parameters
and drive parameters using an index of 0xB02E and the structure in Figure 12 for write and read
requests.
Requests and responses between the IO device and the IO controller or the IO supervisor are
transferred with the Record Data Objects.
Figure 12: PROFIdrive Acyclic Parameter Access Mechanism Structure
A write request is first sent containing the parameter request.
If the write request is valid, the SI-EP3 acknowledges it with request accepted. The master then
sends a read request. If the SI-EP3 is still busy performing the internal parameter request, it will
return a negative response with the error code “0xB5” (State conflict). In this case, the master
repeats the read request until the SI-EP3 has the PROFIdrive response data ready.
If the write request is invalid, a negative response is returned with an error code.
Base Mode Parameter Access - Local
The DO-ID field in the Record Data Object request header is not evaluated by the parameter
manager. Parameters can be read through any slot in the configuration.
Table 17: Response Error Codes
Byte
Value and Meaning
ErrorCode
0xDF (Error Write)
0xDE (Error Read)
ErrorDecode
0x80 (PNIORW) ErrorCode1 decoded according to Table 18.
ErrorCode2 is 0.
0x81 (PNIO) ErrorCode1 and ErrorCode2 decoded according to Table
18.
ErrorCode1
Error class and error code (Refer to Table 18).
ErrorCode2
Not described
