Hello!
The Original value(WinCC OA) is 1 and I set the Direction to Output about the S7 address(Siemens PLC).
I tested that the network is disconnected when the value changing 1-> 0.
After the network reconnected, WinCC OA Value is 0, but real DB value which is S7 address is still 1.
This default setting only sends the data one time.
I also check/uncheck Last Value
How to keep checking Digital Output status about S7 Drivers?
- interelec
- Posts:27
- Joined: Wed May 27, 2015 7:52 am
How to keep checking Digital Output status about S7 Drivers?
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- leoknipp
- Posts:2928
- Joined: Tue Aug 24, 2010 7:28 pm
Re: How to keep checking Digital Output status about S7 Drivers?
If the connection is established output signals and not send again automatically to the PLC.
You can do an inverse general query IGQ in the driver to send the values by setting the dp element _DriverX.IGQ (X is substituted with the driver number).
For details please have a look at the WinCC OA documentation: Reference Tables --> Internal data point types --> _DriverCommon (General driver)
Best Regards
Leopold Knipp
Senior Support Specialist
You can do an inverse general query IGQ in the driver to send the values by setting the dp element _DriverX.IGQ (X is substituted with the driver number).
For details please have a look at the WinCC OA documentation: Reference Tables --> Internal data point types --> _DriverCommon (General driver)
Best Regards
Leopold Knipp
Senior Support Specialist