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Data Type - PLC

Created by: veliamca at: 7/14/2006 9:20 AM (3 Replies)

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7/14/2006 9:20 AM	Rate (0)
veliamca Posts: 33 Rating: (2)	Hi, We start test our WinCC application ; entered integer value in to I/O Field object, but value which going plc is different ! ex. : 1 is 257 and 2 is 587 ! We try it 'Unsigned 16 bit value - WordToUnsignedWord'. Plc is wait MWord. I think tahat we give it ! Also testother type, but there isnot true result.
veliamca Posts: 33 Rating: (2)
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7/14/2006 9:49 AM	Rate (0)
Nemo Posts: 3149 Rating: (171)	Hi, seems as if your value in the S7 is shifted 1 bit => do you use signed values in WinCC/S7? Could you post a screenshot of the definition of your Variable in WinCC tagmanagement, definition of your I/O field in WinCC graphics designer (properties) and the definition of your tag in your S7-CPU (e.g. datablock, MW,...)?? nemo
Nemo Posts: 3149 Rating: (171)
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7/14/2006 11:11 AM	Rate (0)
veliamca Posts: 33 Rating: (2)	We find that some address is wrong in PLC !
veliamca Posts: 33 Rating: (2)
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7/14/2006 12:17 PM	Rate (0)
Ikkezelf Posts: 1084 Rating: (72)	Please note that the MS and LS byte of a word are switch in a connection WinCC <-> S7 plc.
Ikkezelf Posts: 1084 Rating: (72)
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