5.2 Operation Level 
5-7 
Parameters 
 
IS mode (3) 
Alarm 1 latch status 
a1 
 
•  This parameter displays the alarm 1 latch status.   
•  The latch can be cleared by pressing the U and D Keys for at least 2 s while 
the alarm 1 latch status is displayed.   
•  The alarm 1 latch status is only displayed when latch ON (1) is set in the 
“alarm 1 latch” parameter in the initial setting level (4).   
 
 
Monitor range 
0: Latch OFF 
1: Latch ON 
 
IS mode (4) 
Alarm 2 latch status 
a2 
 
•  This parameter displays the alarm 2 latch status.   
•  The latch can be cleared by pressing the U and D Keys for at least 2 s while 
the alarm 2 latch status is displayed.   
•  The alarm 2 latch status is only displayed when latch ON (1) is set in the 
“alarm 2 latch” parameter in the initial setting level (5).   
 
 
Monitor range 
0: Latch OFF 
1: Latch ON 
 
 
 
Setting 
Function 
Function 
Setting