Modbus Register Bits

Ones_Zeros · Aug 9, 2017

Hello,
I have some bits from a modbus register
that I need to read into Wonderware.

For example if the registers were:

41001.8
41001.9
41001.10
41001.11
41001.12 Water Level

How would i enter this into Wonderware
To read the register for example "Water Level"

Would I enter the item name just like
Above with a decimal? 41001.12

Thanks

Bit_Bucket_07 · Aug 9, 2017

Ones_Zeros said:
Hello,
I have some bits from a modbus register
that I need to read into Wonderware.

For example if the registers were:

41001.8
41001.9
41001.10
41001.11
41001.12 Water Level

How would i enter this into Wonderware
To read the register for example "Water Level"

Would I enter the item name just like
Above with a decimal? 41001.12

Thanks

I'm not sure if those are valid item names, and I don't have any Wonderware software on this computer. That said, I think that you can read the entire register as an integer and then address animation objects to a dot field for the tag in order to reference individual bits.

Of course, you could also simply try it, and see if it works.

Gene Bond · Aug 9, 2017

I don't believe the bits are addressable inside an integer via Modbus. I believe BB7 is correct, you'll have to read the integer and pull the bit you need from it externally.

Modbus Register Bits

Ones_Zeros

Member

Bit_Bucket_07

Member

Gene Bond

Member

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