Troubleshooting and diagnosis options
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Page 164 of 167
TR - ELA - BA - DGB - 0027 - 03
11/12/2019
9.2 Data status
The transmitted data are generally provided with a status during cyclic real-time communication. Each
subslot has its own status information:
IOPS/IOCS
. This status information indicates whether the data
are valid =
GOOD
(1) or invalid =
BAD
(0).
During parameterization and at start-up the output data may temporarily change to
BAD
. If the data
change back to
GOOD
status, a "Return-Of-Submodule-Alarm" is transmitted.
In the event of a diagnostic alarm, the status is not set to
BAD!
Example: Input data IO device --> IO controller
VLAN
Ether
type
Frame ID Data IOPS
...
IOPS
...
Cycle
Data status Transfer status CRC
4
0x8892
2
1..
1
1
2
1
1
4
Example: Output data IO controller --> IO device
VLAN
Ether
type
Frame ID IOCS IOC
S
... Data IOPS
...
Data ...IOPS. Cycle Data status Transfer status CRC
4
0x8892
2
1..
1
1 ...
1..
2
1
1
4
