
2. HARDWARE
B–64115EN/01
182
HEALTH
NS
Daughter board
NS and HEALTH are mounted on the back of the daughter board.
LED indication
Name Color Description
LED0 to 3
Green No special meaning
LEDA Red This LED glows when something unusual occurs in the
internal daughter board. At power–up, the LED does not
glow. If this LED glows, replace the DeviceNet board.
NS Red/
green
DeviceNet module/network status LED. The LED indi-
cates whether the DeviceNet board is turned on or
whether DeviceNet communication is normally per-
formed. For the meaning of this LED indication, refer to
the specifications supplied by ODVA.
HEALTH Red/
green
This LED indicates the status of the daughter board. At
power–up, this LED glows in red. When the firmware is
loaded to the internal daughter board, the LED turns
green. Then, if something unusual occurs in the daughter
board, the LED turns red. If the LED does not turn green,
replace the DeviceNet board.
D LED display