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Grounding; Communication Setting - Mitsubishi Electric FX5 User Manual

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Grounding

Grounding should be performed as stated below.
• Perform D class grounding. (grounding resistance: 100  or less)
• Independent grounding should be performed for best results.
When the independent grounding can not be performed, perform "shared grounding" as shown in the following figure.
For details, refer to the following.
FX5U User's manual (Hardware)
FX5UC User's manual (Hardware)
Other
PLC
equipment
Independent grounding
(Best condition)
• The grounding wire size should be AWG 14 (2 mm
• The grounding point should be close to the PLC, and all grounding wires should be as short as possible.
2.6

Communication Setting

For the FX5 communication settings of this function, parameters are set using GX Works3. For details about GX Works3, refer
to GX Works3 Operating Manual.
Setting of parameter differs according to the module used. The procedure for each module is as follows.
For the communication settings of FX3 PLC, refer to FX Series User's Manual - Data Communication Edition.
Built-in RS-485 port (CH1)
Navigation Window  Parameter  FX5UCPU  Module Parameter  485 Serial Port
Window
The following screen will be displayed if [N:N Network] is set for the communication protocol type.
■Basic Settings
■Fixed Setting
■Link Device
2 N:N NETWORK
22
2.6 Communication Setting
Other
PLC
PLC
equipment
Shared grounding
Common grounding
(Good condition)
2
) or larger.
Other
equipment
(Not allowed)

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