Suddenly the CALERTS command stopped working. It doesn't show anything on the panel.
Release : 16.0
Per the online help TOPICS: By default, all definitions coming from PARMLIB are enabled. This means that on the CTHRESH screen the parameter DISABLE was set to YES. It may be overtyped on the CTHRESH screen to reset the DISABLE parm to NO. As soon as the next threshold value was reached, the CALERT was triggered as expected.