Profinet Io; Data Structures For Output And Input Frame - IFM Electronic O3D300 Bedienungsanleitung

13.5 PROFINET IO

13.5.1 Data structures for output and input frame

Size of output frame
Every output frame sent by the controller contains 8 bytes of data, which consists of command word and
command data.
Size of input frame
Every Input frame contains 16 - 450 bytes of data, which are generated by the device in response to the
commands received in the output frames. The size of non mandatory data is adjustable by changing the
size of the input data in the GSDML file.
Byte 0-1
Description Command
word for
mirroring
Layout of command word
Bit 0
Description Error bit
This bit has no meaning in the consuming
assembly. It is used for signaling an
occured error to the PLC
Command word
Bit 0 1 2
Synchronous / asynchronous identifier
Bit 0
Description Asynchronous message bit
2-3
Synchronous /
asynchronous message
identifier
3 4 5 6 7
4-5 6-7 8-15
Message Reserved Mandatory
counter data
1-15
Command bits
Each bit represents a specific command
8 9 10 11
1-15
Bits for asynchrounous message identifier
3D Sensor
16-449
Non mandatory
data
12 13 14 15
55
DE