Omron NX1P2 series

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3 Configuration Units
NX-series NX1P2 CPU Unit Hardware User’s Manual (W578)
3-3 Serial Communications Option Board
3
3-3-3 Part Names and Functions
 Communications Status Indicator
 Operation Setting DIP Switch
RS-422A/485 Option Board (NX1W-CIF11/NX1W-CIF12)
Indicator Color Status Description
COMM Yellow Lit. Communications are being performed.
Not lit. Communications are not performed.
RS-422A/485 terminal
block
Operation setting DIP
switch (SW1)
Operation setting DIP
switch (SW1)
Operation setting DIP
switch (SW2)
Communications
status indicator
CPU Unit connector
Front Back (CIF11) Back (CIF12)
SW 1
1 2 3 4 5 6
O N
1 2 3 4
O N
1 2
O N
SW 1 SW 2
COMM
RDA- RDB+ SDA- SDB+ SHLD
CIF11
CIF12
1 2 3 4 5 6
O N
1 2 3 4
O N
1 2
O N
SW1SW1 SW2
OFF ON