Omron SYSMAC NX-CIF Series - 4-4-3 Examples of Recommended RS-232 C and RS-422 A;485 Wiring

4 Installation and Wiring
4 - 26
NX-series Communications Interface Units User’s Manual (W540)
Examples of 1:1 Connections to an RS-422A/485 Port
Examples of 1:N Connections to an RS-422A/485 Port
Shield
Shield
NX-CIF105
Signal
SDA-
SDB+
RDA-
RDB+
TERSDA-
TERSDB+
TERRDA-
TERRDB+
FG
FG
Terminal No.
A1
B1
A4
B4
A3
B3
A6
B6
A8
B8
Two-wire serial
communications device
Signal
A(-)
B(+)
NX-CIF105
Signal
SDA-
SDB+
RDA-
RDB+
TERSDA-
TERSDB+
TERRDA-
TERRDB+
FG
FG
Terminal No.
A1
B1
A4
B4
A3
B3
A6
B6
A8
B8
Four-wire serial
communications device
Signal
RDA(-)
RDB(+)
SDA(-)
SDB(+)
Shield
Shield
NX-CIF105
Signal
SDA-
SDB+
RDA-
RDB+
TERSDA-
TERSDB+
TERRDA-
TERRDB+
FG
FG
Terminal No.
A1
B1
A4
B4
A3
B3
A6
B6
A8
B8
Two-wire serial
communications device
Signal
A(-)
B(+)
Two-wire serial
communications device
Signal
A(-)
B(+)
NX-CIF105
Signal
SDA-
SDB+
RDA-
RDB+
TERSDA-
TERSDB+
TERRDA-
TERRDB+
FG
FG
Terminal No.
A1
B1
A4
B4
A3
B3
A6
B6
A8
B8
Four-wire serial
communications device
Signal
RDA(-)
RDB(+)
SDA(-)
SDB(+)
Four-wire serial
communications device
Signal
RDA(-)
RDB(+)
SDA(-)
SDB(+)