BECKHOFF EL9xxx - Manual (Page 81)

Appendix
Description
The slave application cannot provide valid input values
Example: A certain hardware which needs to be connected to the slave was disconnected
Current State (or state change)
O, S→O
Resulting state
S + E
Solution
n/a
7.4.12 Error Code 0x0019
Meaning
No valid outputs available
Description
The slave application cannot recieve valid output values.
Example: The slave has a RxPdoToggle output or an “Output Valid” information in its process data. The
RxPdoToggle does not toggle or the OutputValid is not true. Therefore the slave has no process data which
the application can use. If supported, check the RxPDO Toggle Failed Counter in object 0x1C3x.0E). Also,
the Synchronization may have problems (see object 0x10F1:SI2 Sync Error Counter Limit) so that process
data are received too late by the slave so that the local slave cycle misses the toggle event. Another reason
can be that the PLC stopped working
Current State (or state change)
O, S→O
Resulting state
S + E
Solution
The RxPdoToggle may need to be handled by the PLC program
The outputs valid may have to be set by the PLC program
PLC may have stopped, restart PLC
7.4.13 Error Code 0x001A
Meaning
Synchronization error
EL9xxx 81 Version 3.1