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8.3 Wiring Precautions the Part which Matches the EMC Directives
8.3.3 Grounding the cable
(b) For RS-232C cable
• Each signal wire (excluding SG, FG) is twisted with SG.
• Peel the sheath (with the length shown below) at both ends of the cable, and expose the
shield braided wire for grounding.
8.3.3 Grounding the cable
Ground the cable grounding sections and grounding wire to the control panel where the GOT and base unit
are grounded.
SD
RD
DSR
DTR
SG
DSR
RD
SD
DTR
SG
GOT side
40
(1.57)
40
(1.57)
Unit: mm (inch)
Ferrite core
(ZCAT3035-1330)
130
(5.12)
Within 230
(9.06)
Other PLC and
Microcomputer side
Near the connection
destination
Near the
connection
destination
Ferrite cores
For the any other bus cable or RS-422 cable, ground the
shield surface of the cable shield material to the control
box with the cable clamp (AD75CK).
For the bus connection cable (in the case of
A8GT-C100/200/300EXSS, A8GT-C100/200/300EXSS-1,
A8GT-C100/200/300BS), RS-232C cable,
CC-Link dedicated cable or shielded
twisted-pair cable, ground the braided shield to the
control box with the cable clamp (AD75CK).
Cable shield material
(For details of cable clamp installation, refer to the AD75CK Cable Clamp
Instruction Manual <IB-68682>.)
Shield surface
Braided shield
Cable clamp
Cable clamp