How many AO channels can a PLC controller support?
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How many AO channels can a PLC controller generally support at most?
This depends on the brand and model
Products are generally chosen based on requirements.
Controllers of different manufacturers and models come with varying numbers of AO ports. You should check the manufacturer’s sample manual; it’s specified in the technical specifications of the controller. For example, the Siemens CPU312 and CPU314 in my screenshot
It seems this question is a bit difficult. But a PLC controller usually has no more than 2 AO cards, right? An 8-channel AO card
Check the number of modules that the CPU power supply can drive
Look at the brand and model; it’s not possible to generalize
The number of cards that can be installed in controllers of different models from various manufacturers varies; for example, there are significant differences among Siemens’ 200, 300, and 400 series. Even among controllers in the same 400 series, different models have varying load capacities. The same is true for PLCs from other manufacturers such as GE. Therefore, it is recommended that the original poster take a look at the PLC selection manuals of various manufacturers.
Look at the brand and the model – they vary from manufacturer to manufacturer!