Is there a way to dynamically change attributes for all tags

Ignition
1

I would like to set all tags for a device as disabled (Enabled = False) and then re-enable the all those same tags at a later time so that essentially a device can be taken offline (no new tag values being recorded because the customer has the device in a mode where they do not want the values recorded) and then put back online (tag value updates re-enabled).

There may be subfolders and more tags also, so I would want it to be recursive.

Example for one tag at a time:

system.tag.editTag(tagPath=" MyOPCServer /DeviceSet/MyDeviceFolder/MyTag_1", attributes={"Enabled":"False"}) system.tag.editTag(tagPath=" MyOPCServer /DeviceSet/ MyDeviceFolder /MyTag_2", attributes={"Enabled":"False"}) system.tag.editTag(tagPath=" MyOPCServer /DeviceSet/ MyDeviceFolder / MyDeviceSubFolder /MyTag_1", attributes={"Enabled":"False"}) system.tag.editTag(tagPath=" MyOPCServer /DeviceSet/ MyDeviceFolder / MyDeviceSubFolder /MyTag_2", attributes={"Enabled":"False"})

I would like to do an equivalent that would disable all the tags recursively in one statement if possible:

system.tag.editTag(tagPath="MyOPCServer/DeviceSet/ MyDeviceFolder ", attributes={"Enabled":"False"})

I guess I could do something using system.tag.browseTags like:

tags = system.tag.browseTags(parentPath=" MyOPCServer /DeviceSet/ MyDeviceFolder ") for tag in tags: # Check for tags where tag.isOPC() is true and disable # Check for tags where tag.isFolder() is true and do system.tag.browseTags on the subfolder # etc…

But is there a simpler solution?

2

Is there a reason you can’t use a “driven” scan class (or classes) with a slow rate of “0” ? With a boolean memory tag as the “driving” tag, your script would just set or reset it. Ignition would do the rest.

See Scan Classes in the user manual.

3

Thanks Phil. The “driven” scan class idea would work. But since there may be hundreds of devices and any single one of them may be taken “offline” at any point, I would potentially need hundreds of separate scan classes.

Also, our project allows for the customer to add new devices through a semi-automatic interface, which would require a new scan class to be automatically created with each new device. Doable, but more complicated than I had hoped.