Contec CNT24-2GY User Manual page 19

2. Module Nomenclature
Table 2.1.
Name
LINK status
Phase-A status
Phase-B status
Phase-Z status
Counter input
status
12
The List of Status LED Functions
< CNT24-2(USB)GY >
Function
USB communication
status
Phase-A input status
Phase-B input status
Phase-Z input status
Counter input status
Indicator
color
GREEN ON: Communication is established.
OFF: Communication is not established.
GREEN ON: when a current flows from pin PA
(low level, negative logic)
GREEN ON: when a current flows from pin PB
(low level, negative logic)
GREEN Positive logic
ON: when pin PZ is open
(high level, positive logic)
Negative logic
ON: when a current flows from pin PZ
(low level, negative logic)
GREEN ON: when a current flows from pin PDI
(low level, negative logic)
LED indicator
CNT24-2(USB)GY