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Proper tagging for HMI

Created by: gah81 at: 1/4/2012 11:54 PM (1 Replies)

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1/4/2012 11:54 PM	Rate (0)
gah81 Posts: 2 Rating: (0)	I am new at this, I am currently working on a project that has a PLC (1214C) and HMI (mp377 touch screen) communicating, and I have a few questions. I am trying to set up the program, which uses a PID controller, so one can enter in a setpoint for the PID via the HMI. What element would be best for this situation? Would I set the tag to the instance DB of the FB containing the PID controller, or create a new tag and drag it to the setpoint input in the block (FB or OB connection) containing the PID? Is there a better way to do this? Thanks
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1/10/2012 11:30 AM	Rate (0)
FreakOnALeash Posts: 267 Rating: (24)	Iwould create a new tagfor the setpoint. So you can't overwriteitinstead of using the instance data setpoint.
FreakOnALeash Posts: 267 Rating: (24)
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