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3-11
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
Connection diagrams are provided in the following subsections. OMRON recommends the use of
shielded, twisted-pair cables for actual wiring to enhance noise resistance. For details on wiring meth-
ods, refer to 3-3 RS-232C and RS-422A/485 Wiring.
z
Connections to E5CK Temperature Controller
z
Connections to Personal Computer
Connecting RS-232C Ports 1:1
Serial Communications
Unit
RS-232C
Shield
OMRON E5CK Temperature Controller
RS-232C: Terminal Block
Terminal
Signal
Pin
Signal
D-sub, 9-pin
connector (male)
FG
SD
RD
RS
CS
DR
ER
SG
SD
RD
SG
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
FG
SD
RD
RS
CS
DR
SG
CD
ST2
RT
ER
CI
ST1
1
2
3
4
5
6
7
8
9
FG
SD
RD
RS
CS
5V
DR
ER
SG
Computer
RS-232C port