73project
Member
I'm scoping a project that requires logging temperature readings from a RTD. The requirements are that the temperature is captured with a timestamp on 15 minute intervals, and also that the PLC will save a weeks worth of historical captures. This amounts to around 672 records to store to reach the weeks worth of data. With this in mind, I'm leaning towards a CompactLogix processor with a RTD card. I could then build a UDT for the captures, and then populate the with the temperature and time stamp on the 15 minute interval. I would shift the data at each new capture. Have any of you guys done something similar, or have any suggestions that may save me from making this more complex than it has to be?