Omron SYSMAC NX-CIF Series - Page 90

4 Installation and Wiring
4 - 28
NX-series Communications Interface Units User’s Manual (W540)
Connection examples are given in the following figures.
 Two-wire Connections
Terminating
resistance
Shield
Serial communications device
Terminating
resistance
Shield
Serial communications
device
NX-CIF105
Signal
A(-)
B(+)
FG
Signal
A(-)
B(+)
FG
Signal
SDA-
SDB+
RDA-
RDB+
TERSDA-
TERSDB+
TERRDA-
TERRDB+
FG
FG
Terminal No.
A1
B1
A4
B4
A3
B3
A6
B6
A8
B8
Shield
Serial communications
device
Terminating
resistance
Shield
Serial communications
device
NX-CIF105
Signal
SDA-
SDB+
RDA-
RDB+
TERSDA-
TERSDB+
TERRDA-
TERRDB+
FG
FG
Signal
A(-)
B(+)
FG
Signal
A(-)
B(+)
FG
Terminal No.
A1
B1
A4
B4
A3
B3
A6
B6
A8
B8