AH500 Module Manual 
7-6 
Function  Description 
the number 
of input 
pulses 
Alarm 
If the number of sampled pulses is larger than the 
upper-upper limit value set, or less than the lower-lower limit 
value set, an alarm will be generated. If the number of 
sampled pulses is between the upper-lower limit value set 
and the lower-upper limit value set, the alarm will stop. 
Resetting a counter 
The number of pulses received by a channel is reset. 
 
7.2.6  Profile of AH02HC-5A 
1
4
8
7
5
2
3
6
9
11
10
02HC
ERROR
RUN
C0
Y0.8
Y0.9
C1
X0 . 8
+
X0 . 8
-
X0 . 9+
X0 . 9
-
X0 . 10+
X0 . 10
-
X0 . 11 +
X0 . 11
-
X0 . 0+
X0 . 0
-
X0 . 1
-
X0 . 1+
 
 
Number  Name  Description 
1  Model name  Model name of the module 
2 
RUN LED indicator 
(green) 
Operating status of the module 
ON: The module is running. 
OFF: The module stops running. 
3 
ERROR LED 
indicator (red) 
Error status of the module 
Blink: The module is abnormal. 
4  USB port  Providing the mini USB communication interface 
5  Terminals  Input/Output terminals 
6 
Arrangement of the 
input/output 
terminals 
Arrangement of the terminals   
7  Extension port  Updating the firmware 
8  Label  Nameplate 
9  Set screw  Fixing the module 
10  Connector  Connecting the module and a backplane 
11  Projection  Fixing the module