Mitsubishi Electric GOT SIMPLE Series Operation Manual page 162

Treatment of the RS-232 cable and RS-422/485 cable
When the GOT is connected to a controller, configure the system according to the EMC Directive
specifications for the controller.
The following shows the recommended instructions to comply with the EMC Directive.
However, the manufacturer of the equipment must determine the method to comply with the EMC Directive
and conformance to the directive.
• RS-422/485 cable
When connecting each signal wire (except SG and FG wires), twist two signal wires as shown below.
SDA
SDB
RDA
RDB
Connect two or more SG wires.
• RS-232 cable
Twist each signal wire (except SG and FG wires) with the SG wire.
RD
SD
DTR
DSR
SG
Install a ferrite core to the cable in the positions as shown in the figure below.
Strip off the sheath at both ends of the cable as shown in the figure below to expose braided shield for
grounding. The braided shield sections are used for grounding with a cable clamp.
GOT side
100 or less
(3.94)
17 EMC DIRECTIVE
160
17.2 EMC Directive Requirements
Ferrite core
(ZCAT3035-1330)
230 or less 40
(9.06) (1.58)
RDA
RDB
SDA
SDB
SD
RD
DSR
DTR
SG
40 230 or less
(1.58) (9.06)
PLC CPU side
100 or less
Unit: mm (inch)
(3.94)