11.10 Mitsubishi FX5U serial port

Mitsubishi FX5U series PLC

HMI settings

Item	Settings	Note
Protocol	Mitsubishi FX5U
Connection	RS422/RS485
Baud rate	9600
Data bit	7
Parity	Odd
Stop bit	1
PLC station No.	1~255	Need to be the same as PLC settings

Address list

Type	Device registers	HMI registers	Format	Range	Note
Bit
	X	X	X o	0~303237
	Y	Y	Y o	0~303237
	M	M	M d	0~99999
	B	B	B h	0~7FFF
	F	F	F d	0~32767
	SB	SB	SB h	0~7FFF
	TS	TS	TS d	0~1023
	TC	TC	TC d	0~1023
	STS	STS	STS d	0~1023
	STC	STC	STS d	0~1023
	CS	CS	CS d	0~1023
	CC	CC	CC d	0~1023
	SM	SM	SM d	0~9999
	L	L	L d	0~32767
	S	S	S d	0~4095
Word
	W	W	W h	0~3FF
	TN	TN	TN d	0~1023
	STN	STN	STN d	0~1023
	CN	CN	CN d	0~1023
	R	R	R d	0~32767
	SW	SW	SW h	0~7FFF
	Z	Z	Z d	0~23
	D	D	D d	0~7999
	SD	SD	SD d	0~11999

PLC settings (GX Works 3)

1) Create a blank FX5U project

2) Find the 485 serial port module in the system navigation bar and double click to enter the settings.

3) Select the MELSOFT protocol in the setting item. Other protocols could be selected as needed according to the external device model connected to the serial port.

4) Set parameters, they need to match the selected protocol. If MELSOFT protocol is selected, click on the [Apply] button.

5) If user chooses the user defined or Modbus protocol, baud rate setting is required, stop bit and parity bit as shown above.

6) Click the [Apply] button to finish the setting.

7) Click download and select the items as below, then click [execute] to download the configuration to PLC.

8) As soon as download is completed, connect PLC with serial port, then configure it in the [Specify Connection Destination Connection].

9) Done.

Cable wiring

1) RS485

2) RS422

✎Note:

COM3 is available in PI8000 series and advanced series