Communication
6.5 Communication via PROFINET
Control Units CU240S
174 Operating Instructions, 07/2008 - FW 3.2, A5E00766042B AD
Create request/response Data block, e.g. DB900/DB901, to write or write parameters
Table 6-36 Structure of a parameter request
Request_reference = 0x01 Request_ID = 0x01
Request header
Drive_object_ID = 0x00 No_of_parameters = 0x02
Attribute_parameter_01 = 0x10 No_of_elements_01 = 0x08
parameter_number_01 (PNU) = 03B3 (= 947 dec, P0947)
Parameter Address_01
Subindex_01 = 0x00
Attribute_parameter_02 = 0x10 No_of_elements_02 = 0x08
parameter_number_02 (PNU) = 03B5 (= 949 dec, P0949)
Parameter Address_02
Subindex_02 = 0x00
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:
0x01 --> This identifier is required for a read request.
● Drive_object_ID:
0x00 -> Device-Representative.
● No_of_parameters:
0x02 --> Two parameters are read.
● Attribute_parameter_01:
0x10 --> The parameter values are read.
● No_of_elements_01:
0x08 --> The current fault incident with 8 faults is to be read.
● Parameter_number_01:
03B3 --> P0947 (last fault code) is read.
● Subindex_01:
0x00 --> Read access starts at index 0
● Attribute_parameter_02:
0x10 --> The parameter values are read.
● No_of_elements_02:
0x08 --> The current fault incident with 8 faults is to be read.
● Parameter_number_02:
03B5 --> P0949 (last fault code) is read.
● Subindex_02:
0x00 --> Read access starts at index 0.
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