Omron CJ1W-SCU22, Руководство по эксплуатации, Страница: 217 / 478

5-25
5 Serial Gateway
CJ-series Serial Communications Units Operation Manual for NJ-series CPU Unit(W494)
5
-4 Pr
o
toco
l Co
n
ver
sion
5
5-4-3 C
ompoW
a
y
/F
Connection
Examples
Connection diagrams are provided here. OMRON recommends the use of shielded twisted-pair cables
for actual wiring to enhance noise resistance. For details on wiring methods, refer to 3-3 RS-232C and
RS-422A/485 Wiring.
z
Connection Example with E5CK Digital Controller
Note Be sure to connect a terminating resistance of between 100 and 125
Ω
(1/2W) to the termi-
nals of the remote devices at either end of the RS-422A/485 transmission path. (Set the ter-
minating resistance of this Unit by using Terminating resistance ON/OFF switch located on
the front panel of the Unit.
5-4-3 CompoWay/F Connection Examples
1:1 Connection Example Using RS-232C Port
1:1 RS-485 Connection Example Using RS-422A/485 Port
Signal name
Pin No.
Serial Communications Unit
RS-232C shield wire
Example: E5CK (OMRON Digital Controller)
RS-232C: Terminal Block
Terminal No. Signal name
D-Sub 9-pin (Cable connector type: Male)
A(
−
)
B(+)
1
2
3
4
5
RDA
RDB
SDA
SDB
FG
Terminal block connector
Serial Communications Unit
Pin
No.
Shield wire
RS-422A/
485
interface
Signal
name
Signal
name
RS-422A/
485
interface
Component with
RS-422A/485
communications function
(2-wire method)