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IO Field reading problem

11/20/2010 9:51 PM	Rate (0)
vojvoda82 Regular Member Joined: 11/20/2010 Last visit: 8/30/2023 Posts: 21 Rating: (0)	Dear friends, I have a problem with IO Field reading in WinCC Flexible 2005 Advanced! This IO field is point to the internal tag current_float, which is REAL type. This tag contain scaled value from external tag current_plc (his address is PIW268, type WORD). tag: current_plc > events > Change value > Linearscaling: y = current_float a = 0.01 x = current_plc IO Field mode is set to Output! Problem is when a runtime is started, IO field can't display scaled value from PLC address PIW268! It's display 0.00! I can't understand way?!! It seems to me everything is fine! In PLC, value of PIW268 is changing! Why this change isn't displayed on my WinCC Flexible application in IO field? Other tags I've created, slider control, switch on/off (for writing on PLC) works fine!

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11/23/2010 9:35 AM	Rate (0)
Sandman Platinum Member Joined: 4/29/2010 Last visit: 1/20/2025 Posts: 1557 Rating: (161)	Hello, have you check the acquisition mode of these tags in this case (Cycle continouse !)? best regards.

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