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)
• 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.
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
The following screen will be displayed if [N:N Network] is set for the communication protocol type.
2 N:N NETWORK
2.6 Communication Setting
) or larger.