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Support Questions / Issue when Subscribing to multiple micrologix 1100 PLCs

« on: May 14, 2014, 01:05:12 PM »

I have a setup that uses two micrologix 1100 PLCs here and I am having an issue with manual data subscription when using two ethernetIPforPLCSLCMicroCom driver components for them on v3.61. The first driver component always throws a PLCDriverException. I have attached images of the stack trace and exception message that it gives. I have found that adding a driver component that has a null IP (EDIT: null works sometimes, 000.000.00.0 seems to always work...) address first (that I don't use) fixes the issue and allows me to correctly subscribe to my data. I have tested this with success on a brand new c# windows forms solution with just the form and AdvancedHMIDrivers.vb project with a subscription to a single bit on each driver/PLC. I do not have this issue on older versions (I believe I was using v3.59 previously, it had different method names for synchronous Reads and Writes than the current version) This will work as a temporary solution for my application but also seems to be slow for some reason. Hopefully this can get fixed easily.

Thanks,
Jason