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3-13
3 Installation and Wiring
CJ-series Serial Communications Units Operation Manual for NJ-series CPU Unit(W494)
3-2 Wiring
3
3-2-9 C
onnections f
or Protocol Macr
o
, S
e
rial Gate
w
a
y, No
-prot
ocol Mode
, an
d Modb
us-R
TU Sla
v
e Mode
z
Connections to a Modem
Modem
Serial Communica-
tions Unit RS-232C
port
FG
SD
RD
RS
CS
5V
DR
ER
SG
FG
SD
RD
RS
CS
DR
SG
CD
ST2
RT
ER
CI
ST1