Linking a HMI tag to a PLC tag (panelview to AB)

[Paul_Pereira]

I would like to cause an HMI tag to change value (digital) when a certain PLC tag changes value. Is there a way to do this? Specifically I would like to launch a popup display when a certain PLC tag goes high. However I do not want to do it by replacing the remote display tag (which is currently an HMI tag) with a PLC tag instead. I would prefer the plc tag to affect the HMI tag instead.

 

[Ken Roach]

The simplest way to make an HMI Tag Database tag state match the value of a tag in a PLC is to switch it from being a "Memory" tag to being a "Device" tag, which reads and writes the associated PLC address or tagname.

Or, you could use up one of your five Remote Macros. You would use a PLC tag that goes from zero to nonzero state to execute one of the specifically named macros (Macro1 through Macro5), which in turn sets that Memory tag to the value of a PLC address/tagname.

Unfortunately in FTView ME, there's no periodic execution method for macros, like running one every couple of seconds.

 

[Paul_Pereira]

The simplest way to make an HMI Tag Database tag state match the value of a tag in a PLC is to switch it from being a "Memory" tag to being a "Device" tag, which reads and writes the associated PLC address or tagname.

Or, you could use up one of your five Remote Macros. You would use a PLC tag that goes from zero to nonzero state to execute one of the specifically named macros (Macro1 through Macro5), which in turn sets that Memory tag to the value of a PLC address/tagname.

Unfortunately in FTView ME, there's no periodic execution method for macros, like running one every couple of seconds.

What worked for me well was changing the tag to device tag. Then the tag was influenced on both ends through both the HMI logic and the plc logic.