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PROFINET Acyclic Communicat...
Data:
The actual value to transfer. The amount of data has to be
exactly the size requested in the parameter block. If the size
differs, the request will generate an error.
On a successful transmission of a request command, the
master can read the response from the drive. The response
does look very much like the request command. The
response only consists of two blocks, the header and the
data block.
1 Header
2 Header
3 (Data Param. 1)
4 (Data Param. 1)
5 (Data Param. 2)
6 (Data Param. 2)
7 (Data Param. 3)
7
7
8 (Data Param. 3)
9 (Data Param. 3)
10 (Data Param. 3) Data
Table 7.2 Response Telegram
7.1.9 Header
Request number:
Request # is used by the Master to handle the response from
the IO device. The IO device does mirror this number in its
response.
Request ID:
1 = request parameter
2 = change parameter
Axis:
Always leave this to 0 (zero).
Only used in multi axis system.
Number of parameters:
Number of parameters transferred.
34
PROFINET Operating Instruction
Request #
Request ID
Axis
# Param.
Format
Error code
Data
Data
Format
Error code
Data
Data
Format
Error code
Data
Data
Data
Data
Data
7.1.10 Data Block
The Datablock is only needed for write commands. For each
parameter to write, This information has to be setup.
Format:
See under the request telegram.
Error code:
If the IO device does discover an error during the execution
of the command, it will set the error code to the following
values:
0x00 unknown parameter
0x01 parameter is read-only
0x02 value out of range due to max/min value
0x03 wrong subindex
0x04 parameter is no array
0x05 wrong datatype (wrong data length)
0x06 it is not allowed to set this parameter (only reset)
0x07 descriptive element is read-only
0x09 no description available (only value)
0x0b process control not possible
0x0f no text array available (only value)
0x11 not possible in current state
0x14 value out of range due to drive state/configuration
0x15 reply too long (more than 240 bytes)
0x16 wrong parameter address (unknown or unsupported
value for attribute, element, parameter number or subindex
or illegal combination
0x17 illegal format (for writing)
0x18 value amount not consistent
0x65 wrong axis : action not possible with this axis
0x66 unknown service request
0x67 this service is not possible with multi parameter access
0x68 parameter value can not be read from bus
Note: all values if Hex numbers
Data:
The actual value to transfer. The amount of data has to be
exactly the size requested in the parameter block. If the size
differs, the request will generate an error.
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