![background image](http://html1.mh-extra.com/html/omron/cp1l-l14d-series/cp1l-l14d-series_operation-manual_742090633.webp)
600
Connections to Serial Communications Option Boards
Appendix F
RS-232C and RS-422A/485 Wiring
Recommended RS-232C Wiring Examples
It is recommended that RS-232C cables be connected as described below especially when the Option Board is
used in an environment where it is likely to be subject to electrical noise.
1.
Always use shielded twisted-pair cables as communications cables.
2.
Combine signal wires and SG (signal ground) wires in a twisted-pair cable. At the same time, bundle the SG
wires to the connectors on Option Board and the remote device.
3.
Connect the shield of the communications cable to the Hood (FG) terminal of the RS-232C connector on
the Option Board. At the same time, ground the ground (GR) terminal of the CPU Unit to 100
Ω
or less.
4.
A connection example is shown below.
Example: Twisted-pair Cable Connecting SD-SG, RD-SG, RTS-SG, and CTS-SG Terminals in Toolbus Mode
Note
The Hood (FG) is internally connected to the ground terminal (GR) on the CPU Unit. Therefore, FG is
grounded by grounding the ground terminal (GR) on the power supply terminal block. Although there is
conductivity between the Hood (FG) and pin 1 (FG), connect the Hood (FG) to the shield because the
Hood (FG) has smaller contact resistance with the shield than pin 1 (FG), and thus provides better noise
resistance.
Model
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.
RS-232C
Option Board
Remote device
Actual Wiring Example
SG signal wires
Bundle the SG wires.
Aluminum foil
XM2S-0911-E
Pin
Signal
Hood
Shield
Signal
RS-232C Option Board
Ground to
100
Ω
or less.
Содержание CP1L-L14D Series
Страница 2: ...CP1L L14D CP1L L20D CP1L M30D CP1L M40D CP1L CPU Unit Operation Manual Revised June 2007...
Страница 3: ...iv...
Страница 9: ...x...
Страница 13: ...xiv TABLE OF CONTENTS...
Страница 21: ...xxii...
Страница 33: ...xxxiv Conformance to EC Directives 6...
Страница 65: ...32 Function Blocks Section 1 5...
Страница 153: ...120 CP CPM1A series Expansion I O Unit Wiring Section 3 6...
Страница 523: ...490 Troubleshooting Unit Errors Section 9 4...
Страница 531: ...498 Replacing User serviceable Parts Section 10 2...
Страница 563: ...530 Auxiliary Area Allocations by Function Appendix C...
Страница 611: ...578 Auxiliary Area Allocations by Address Appendix D...
Страница 638: ...605 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Страница 639: ...606 Connections to Serial Communications Option Boards Appendix F...
Страница 669: ...636 Index...
Страница 671: ...638 Revision History...