Omron GRT1-ML2 Hardware Reference Manual page 109

Hardware reference
7-segment LED
The 7-segment LED indicator is on the front panel.
When the power is turned on, it shows the node address that is set by the
rotary switches. Then the indication changes in accordance with the setting
on the Default Display (Pn700). If any alarming error occurs, it indicates the
error number (Errxxx) as the alarm code. If any warning situation occurs, it
indicates the warning number as the warning code.
HARDWARE REFERENCE MANUAL
Turn ON Control Power Supply
8.8.
<Node Address Display>
nkak
k3k
<Normal Display (when the Default Display (Pn001) is set to 0)>
-k-k
Main Power Supply ON Main Power Supply OFF
and Network Established or Network Not Established
-k-.
Servo ON Servo OFF
0k0.
Alarm Cleared
Alarm Issued
<Alarm Display>
Alarm code flashes in decimal display
(Below is an example for overload)
1k6k
fig. 59
All OFF
All ON
(approx. 0.6 s)
[nA] (Node Address)
(approx. 0.6 s)
Rotary switch setting (for MSD = 0, LSD = 3)
(Time set by the Power ON Address Display
Duration Setting (Pn006))
[- -]
[- -] + right dot ON
[00] + right dot ON
Warning Issued Warning Cleared
<Warning Display>
Alternates between warning code (hex)
and normal display
(Below is an example for overload)
9k0. 0k0.
Warning code (2 s) Normal Display
(approx. 4 s)
104