* Indusoft version 6.1 SP5
* Windows 7 64-bit
* Siemens Simatic TI-545 w/CTI-100 ethernet module
* Indusoft driver: TI500 (version 1.09)
Indusoft is running on a PC which connects to a PLC, at another location, via internet. For the most part this works without problems. But then there is this:
If we remove the connection, and then bring it back - i.e. (un)plug a patch cable - then very briefly random values will toggle on the PC. This is especially unfortunate with alarms, which are 0 (no alarm) but toggle to 1 (alarm), and then back to 0 once the communication is properly established.
Furthemore this issue was discovered as it has occured "by itself" - as in nobody were removing any cables. Has happened more than once. The internet connection may be unstable?
So far the solution has been to add a delay to the alarms, but that only resolves the issue and not the cause of the problem.
We have tested with Indusoft version 7, but the problem was there still. We have also screened the PLC program, and the problem is almost certainly not here.
So anybody experienced anything similar? At the moment we guess that it may be a bug in the TI500 driver. As mentioned initially, the problem can be forced by cutting the connection and then bringing it back. And only at very first moment that the connection is active again, do the various values toggle. What gives? Help!
