In case status error -3 was received under Data Sampler tag, that might be the cause of activating several Data Samplers on the same scan. the suggested solution in this case is to activate the Data Samples with delay, one per cycle.

Suggested solutions:

• Using 10ms timers for delay after each Data Sampling activation
• Using an enable tag (as inverted contact for example) that will allow to activate the next Data Sampler only after the former one was already triggered.