![]() ![]() ![]() To add a tag-based alarm for a specific single tag browse under the proper scope, right-click RealAlarm and select "Add Alarm for “."įrom here, you can configure the following properties: Tag-based alarms also do not contribute to scan time like ALMA and ALMD instructions do, so it is advisable to use them if your PLC and firmware version permits it. This includes debounce timers, deadbands, and much more. With these newer models, you can easily create configurable tag-based alarms in Logix Designer-which can handle all the logic that was previously contained within the program's ladder logic. Now that Allen-Bradley has released the 5380 CompactLogix and the 5580 ControlLogix PLCs, though, I have started to rethink my programming strategy. However, this almost always requires some conditional logic and a timer. Whenever I create Add-On Instructions (AOIs) in RSLogix 5000 and Logix Designer, I make sure that they have their own alarm handling. ![]()
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