Siemens SIMATIC MV440 Operating Instructions Manual page 274

Process interfacing via an automation system (PLC, PC)
10.4 Control with FB79
"Send" user data interface
Byte no.
0
1
2
3
4
5
...
31
Note
The "data ID of the supplied data" defines the data transferred. The coding matches byte 4
of the "Receive" user data interface. With a read job on the "Receive" user data interface,
the ID of the data currently being transferred is entered here.
"Receive" user data interface
Byte no.
0
1
2
3
4
5
...
31
The "data ID of the requested data" defines the data to be read. The data ID can have the
following values:
Note
• The code qualities are output correctly only when job = verification to 16022 is set.
Otherwise the quality codes are not calculated when the code is read and cannot be
output.
• Use the definition of the "Format string" on the "Result" tab (result step) under "Programs"
to output the quality values when another type of verification is selected. The quality
values are then output according to the parameter settings along with the read result.
272
Meaning
Reserved
Consecutive number of the data packet to be transferred to the I/O controller.
Total net length of the data to be transferred in bytes in STEP 7 format.
Data ID of the supplied data
1. user data byte
...
27. user data byte
Meaning
Reserved
Consecutive number of the current data packet received correctly by the I/O controller
Reserved
Reserved
Data ID of the requested data.
Reserved
...
Reserved
SIMATIC MV420 / SIMATIC MV440
Operating Instructions, 04/2013, A5E02371045-06