In my project i want to alert the maintenance people when some equipment have ran more than X hours. So i was thinking to have the running hours tags (from the PLC) in IGNITION, and put alarms.
The problem is that i’m doing this to 700 machines and i don’t want to saturate the OPC connection. I’m going to use the “leased” scan class to this tags (606024*1000 ms on slow rate and 1000 ms on fast rate) so only when the maintenance people see the running hours interface, the tags will be updated at fast rate.
The questions are:
- When only 1 tag is in use, the whole scan class (and his tags) are subscribed? (I’m using IGNITION 7.2.3 and 7.1.8 )
- If I’m using alarms in this tags, It always will run at fast rate? or the alarm configuration doesn’t implicate to pass to fast rate?
Thanks in advance.