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Multipexed channels in MODBUS with memory tag?

Hi

I have setup where an analog input module multiplexes it's four channels into one MODBUS address. I do this with the following procedure:
- channel one is written to a certain MODBUS address (e.g. 30016)
- then I write a number (e.g. 12) to an other certain MODBUS address (e.g. 40001)
- channel two is now written to the first (30016) address
- I write a second (e.g. 16) number to 40001 MODBUS address
- channel three is now written to the first (30016) address
- and so on...

I am using LabVIEW DSC an I am wondering if I could solve the problem somehow with a memory tag.
I can do it by hand already (write tag / read tag) but I need to have those four channels seperated in the datab
ase.

thanks in advance

wolfram
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I guess this question is already answerd and got posted multiple times 🙂
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