AN #AlarmsReset
JC E001
L #NrMaxByteAllarme
T "WordAus_A0"
L P#0.0
LAR1
L001: NOP 0
L 0
OPN "Allarmi"
T DBD [AR1,P#0.0]
+AR1 P#4.0
L "WordAus_A0"
L 4
-D
T "WordAus_A0"
L 0
>D
JC L001
E001: NOP 0


麻烦高手解释下这段程序的意思？