Omron CP1E-E10DT-A, User Manual

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A-39
Appendices
CP1E CPU Unit Hardware User’s Manual(W479)
A-3 W
irin
g
f
o
r S
e
rial
Co
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icatio
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s
App
A
-3-1
Rec
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mm
ended RS
-232C
W
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ng
A-3 Wiring for Serial Communications
We recommend the following wiring method for the RS-232C, especially in environments prone to
noise.
1
Use shielded twisted-pair cables for the communications cables.
• Recommended RS-232C Cables
2
Combine a signal wire and SG (signal ground) wire in a twisted-pair cable.
At the same time, bundle the SG wires at the connectors on Option Board and the remote
device.
3
Connect the shield of the communications cable to the hood (FG) of the RS-232C connector on
the Option Board.
At the same time, ground the ground terminal (GR) of the CPU Unit to 100
Ω
or less.
z
Connection Example
Example: Twisted-pair Cable Connecting SD-SG, and RD-SG Terminals in Host Link Mode
* DR and ER signals are not supported by the N S(1)-type CPU Unit.
A-3-1 Recommended RS-232C Wiring
Recommended RS-232C Wiring
Model numbers Manufacturer
UL2464 AWG28x5P IFS-RVV-SB (UL product)
AWG28x5P IFVV-SB (non-UL product)
Fujikura Ltd.
UL2464-SB (MA) 5Px28AWG (7/0.127) (UL product)
CO-MA-VV-SB 5Px28AWG (7/0.127) (non-UL product)
Hitachi Cable,
Ltd.
1
2
3
4
5
6
7
8
9 CD
RD
SD
ER
SG
DR
RS
CS
CI
1
2
3
4
5
6
7
8
9 FG
SD
RD
RS
CS
5V
DR*
ER*
SG
CPU Unit
IBM PC/AT or compatible
Signal Signal Pin Pin
RS-232C
interface RS-232C
interface
D-sub, 9-pin connector (male) D-sub, 9-pin connector (female)
SG signal wires
Bundle the SG wires
Aluminum foil
XM2S-0911-E