Eliminated from:
PLC Designer V3.5.1
Behaviour of the new version:
When closing or changing tabs, no Exception occurs.
What happens?
PLC Designer indicates an Exception with the message:
Collection was modified; enumeration operation may not execute
When does the problem occur?
The above-described response occurs if an online connection has been established between PLC Designer and control system and an i700 servo inverter, I/O1000 bus coupler EPM-S110 or EPM-S130 tab is closed or it is quickly changed between tabs of this type.
Which products are concerned?
PLC Designer from V3.5
i700 servo inverter
I/O1000 bus coupler EPM-S110 (CAN open)
I/O1000 bus coupler EPM-S130 (EtherCAT)
Possible diagnostics:
None
Short-term measures/recommendations:
Click <Continue> in the Exception dialog. After this, you can continue working without problems.
Evaluation:
The Exception rarely occurs. The project is not damaged by the Exception. After acknowledging the Exception, you can continue working with the PLC Designer without problems.
