Step 7 Manual command for Open / Close

[larry]

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The program in the picture: When the valve is in manual mode and the rising edge of the command to open the valve occurs, it will close the valve that is open in manual mode. Why do they have such considerations? The command to automatically open the valve is still there, and it doesn't affect opening the valve again in manual mode.

 

[PN/DP]

The program in the picture: When the valve is in manual mode and the rising edge of the command to open the valve occurs, it will close the valve that is open in manual mode. Why do they have such considerations?

Maybe they just want to reset only the command bit from the HMI?
Where is the valve connected?

The command to automatically open the valve is still there, and it doesn't affect opening the valve again in manual mode.

Which signal is "command to automatically open the valve"? Is that in your picture?
What exactly is your problem or question?

 

[JesperMP]

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You are asking about the part of the second &-box which resets the bit #SB1HMI_CmdOn ?

I am guessing the HMI bit #TS_Status.00n shall function as a toggle.
One press of the button on the HMI turns #SB1HMI_CmdOn on.
One more pressof the button on the HMI turns #SB1HMI_CmdOn off.

 

[larry]

Maybe they just want to reset only the command bit from the HMI?
Where is the valve connected?

According to the program in the picture, when the SB1ManHMI variable value is 1, the value of the IB1CmdOn automatic valve opening command variable goes from 0 to 1, then the rising edge will close the valve opened in manual mode.




Which signal is "command to automatically open the valve"? Is that in your picture?
What exactly is your problem or question?

Maybe they just want to reset only the command bit from the HMI?
Where is the valve connected?


Which signal is "command to automatically open the valve"? Is that in your picture?
What exactly is your problem or question?

According to the program in the picture, when the SB1ManHMI variable value is 1, the value of the IB1CmdOn automatic valve opening command variable goes from 0 to 1, then the rising edge will close the valve opened in manual mode.

Later, the value of the command to open the valve for IB1CmdOn has always been 1, the valve is opened in manual mode, and the manually opened valve won't close. The valve opened in manual mode can only be closed through automatic mode, as shown in the picture SB1Mode_Auto.

I don't understand what the benefit is of closing the manually opened valve at the rising edge of the open valve command?