766
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.
MAC Address:
01234567890A
00
NC
02
04
06
08
10
00
02
04
06
08
10
01
COM
03
05
07
09
11
01
03
05
07
09
11
BKUP
ERR/ALM
LNK/ACT
SYSMAC
CP1L
POWER
RUN
INH
1
00
01
02
03
04
06
00
01
03
04
06
COM
02
COM
05
07
COM
COM(V+)
05
07
ANALOG INPUT
V1+ V2+ COM
2
Summary of Contents for CP1L-EL20DR-D
Page 3: ...CP1L EL20D CP1L EM30D CP1L EM40D CP1L EL EM CPU Unit Operation Manual Produced July 2017...
Page 4: ...iv...
Page 10: ...x...
Page 22: ...xxii...
Page 34: ...xxxiv Software Licenses and Copyrights 7...
Page 192: ...158 Trial Operation and Debugging Section 5 3...
Page 250: ...216 Automatic Clock Adjustment and Specifying Servers by Host Name Section 6 7...
Page 666: ...632 Trouble Shooting Section 11 7...
Page 696: ...662 Standard Models Appendix A...
Page 805: ...771 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Page 806: ...772 Connections to Serial Communications Option Boards Appendix F...
Page 836: ...802 PLC Setup Appendix G...
Page 838: ...804 TCP Status Transitions Appendix H...
Page 840: ...806 Ethernet Network Parameters Appendix I...
Page 842: ...808 Buffer Configuration CP1L EL EM Appendix J...
Page 844: ...810 Ethernet Specifications Appendix K...
Page 851: ...Index 817 work words 118 write protection 447...
Page 852: ...818 Index...
Page 854: ...820 Revision History...
Page 855: ......