Hmi/plc

[Tony Boniol]

Good Day! My question is can I change a limiter's lower & upper settings through an HMI (maple 530c type)? My PLC is an AB/1500 unit. I know that I can not do it through the laptop unless I go off line. I can change counter settings and, timer settings through the HMI but I was wondering if it was possible to do the same with the limiters. Maybe someone in the PLC world could shed alittle light on the subject for me. Thanks!

 

[bernie_carlton]

"My PLC is an AB/1500 unit" Does this mean the MicroLogix 1500?
By "limiter" do you mean a Limit Compare type function? If so the compared points could only be changed if they are from data files, not if they are constants. It will depend on the PLC program.

 

[panic mode]

bernie is right, to be able to change values online
you have to use N7 or F8 registers for example
as upper and lower limits.