Yokogawa device driver

The device driver is used for SK HMI to read and write the data or state of Yokogawa FA-M3 series PLC register. The serial communication connection is established through the serial port on the touch screen and the serial port of Yokogawa FA-M3 series PLC, so as to operate Yokogawa FA-M3 series PLC. Prior to use of the driver, one shall carefully read related technical specifications of the chapter and Yokogawa FA-M3 series PLC.

How to establishment connection with Yokogawa FA-M3 series PLC  

1.      Hardware connection

 

Connecting cable:

RS232

SK HMI COM1/COM2		Yokogawa FA-M3 series
5	GND	5	SG	4-5 short-circuited 220Ω resistor in series
6	RX-	4	SDB
7	RX+	3	SDA	2-3 short-circuited 220Ω resistor in series
8	TX-	2	RDB
9	TX+	1	RDA
		6	CSA	6-7 short-circuited
		7	ERA
		8	CSB	8-9 short-circuited
		9	ERB

 

 

Terminal of HMI is DB9F, and that of Yokogawa FA-M3 series PLC is SIO.

2.      Software settings

 

Select Yokogawa Electric Corp. in connection device service.

Select the corresponding item in connection device service according to the connected PLC model or supported protocol.

Guarantee that communication parameters in touch screen connection parameters and PLC station number are consistent with the connected PLC.

For settings of the connected PLC, please consult related technical documents of Yokogawa FA-M3 series PLC.

 

Default connection parameters of SK HMI

Setting item	Default parameter value	Setting scope
PLC type	Yokogawa FA-M3	Yokogawa FA-M3
Communication port type	RS422	RS232/RS422/RS485
Baud rate	9600	1200/2400/4800/9600/19200/38400/57600/115200
Data bit length	8	7/8
Parity	EVEN	EVEN/ODD/NONE
Stop bit length	1	1/2
PLC station number	1	0 to 255
HMI station number	0	0 to 255

 

Supporting function	Whether it is supported
Offline simulation	Yes
Online simulation	Yes
Extended mode	No

 

3.      Operational register and address scope

Register name	Address format	Input scope	Remarks
X	ddddd	0 to 71664	Bit: input, discontinuous, determined by the slot number
Y	ddddd	0 to 71664	Bit: output, discontinuous, determined by the slot number
M	ddddd	0 to 16384	Bit: special relay
I	ddddd	0 to 71024	Bit: internal relay
L	ddddd	0 to 9984	Bit: link relay, discontinuous
D	ddddd	0 to 8192	Word: data register
B	ddddd	0 to 32768	Word: file register
V	ddddd	0 to 64	Word: external switching value output
W	ddddd	0 to 71024	Word: link register, discontinuous
Z	ddddd	0 to 512	Word: special register

Note:

d represents decimal system, input scope is 0-9;

Word in the remarks: represents the register can only be used as word;

Bit in the remarks: represents the register can only be used as bit;

Read only in the remarks represents that the register can only be read but not be written;

The names of the registers supported by different equipment model may be different, and the scopes may also be different.

For detailed name and scope, please consult related technical document of the connected device