Rockwell Automation MMCL Using the Mining, Mineral, and Cement Library (MMCL) in RSLogix 5000 Appli - Manual (Page 22)

Publication RA-UM002B-EN-P - November 2010
22 Rules and Recommendations
Enable Alarming in Analog Modules
To use the alarming capabilities of the AnaInp, AnaInpC and ActMod
modules, you must enable each alarm individually. This can be done by either
setting the tags <DEVICE>.EMA/.EHA/.ELA/.ENA to 1 while you are
programming the device, or by switching the tags dynamically from On to Off
through the logic program according to the application requirements.