Grounding; Communication Settings - Mitsubishi MELSEC iQ-F FX5 User Manual

Grounding

Grounding should be performed as stated below.
• Perform Class-D grounding. (Grounding resistance: 100 Ω or less)
• Independent grounding should be performed for best results.
When independent grounding cannot be performed, perform "shared grounding" as shown in the following figure.
For details, refer to the following.
MELSEC iQ-F FX5U User's Manual (Hardware)
MELSEC iQ-F FX5UC User's Manual (Hardware)
Other
PLC
equipment
Independent grounding Shared grounding
(Best condition)
• The grounding wire size should be AWG 14 (2 mm
• Bring the grounding point close to the PLC as much as possible so that the ground cable can be shortened.
6.6

Communication Settings

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.
Built-in RS-485 port (CH1)
Navigation Window  Parameter  FX5UCPU  Module Parameter  485 Serial Port
Window
The following screen will be displayed if [Non-protocol Communication] is set for the communication protocol type.
■Basic Settings
■Fixed Setting
Other
PLC PLC
equipment
Common grounding
(Good condition) (Not allowed)
2
) or larger.
Other
equipment
6 NON-PROTOCOL COMMUNICATION
6.6 Communication Settings
6
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