2-6
BKS-R3219A/R1617A I&SSM
2-9. Setting the On-Board Switches and Description of LEDs
n
The number shown in the parentheses ( ) indicates the address on the circuit board.
CPU-420 board (BKS-R3219A/BKS-R1617A)
< LED >
D71 (D-2) :
+
+
+
+
+
12 V
+
12 V power supply status indication
Lights when the
+
12 V power is supplied normally.
D74 (C-2) :
+
+
+
+
+
5 V
+
5 V power supply status indication
Lights when the
+
5 V power is supplied normally.
A
B
C
D
1
2
S1
S2
D74
D71
Side A
<Switch >
S1 (B-1) : RESET
The reset switch that is used to reset operations of the
BKS-R3219A/BKS-R1617A.
S2 (B-1) : for DEBUG
2-pin DIP-switch
Factory setting
( indicates the switch lever position.)
BIT1 : Use the ON setting (factory default setting).
BIT2 : Use the OFF setting (factory default setting).
1
2
ON
