I am working on a project where I will need to measure several analog signals (32) and frequency signals (16). I have both an AM16/32B and SDM-IO16 on hand and can reserve either a CR1000 or CR6 for logging and control. Based on the documentation for the multiplexer, 30 s is the minimum recommended scan time. However, for frequency counting on the SDM-IO16, the maximum measurement interval is 15.9375 s.
My initial thoughts were to cycle between the two via TimeIntoInt, using a 45 s scan and start the frequency measurement at 0 s then start the analog at 15 s. Any other suggestions on how to get these two units to play nice?
I don't have either external device so I can't check this out for myself but have you considered running them in SlowSequence/EndSequence loops? I looked at the manuals and did not see any limitations to this approach.
You could place the frequency measurement in the main scan at a 15 second or faster scan rate and put the AM12/32B in a SlowSequence loop at a 30 second scan rate for example. Or you could put both in their own separate SlowSequence loops.