LG device driver

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

How to establish connection with LG Master-K series PLC

1.      Hardware connection

 

Connecting cable:

RS232-using CNet protocol (serial port RS232 protocol)

SK HMI COM1/COM2		LG Master-K
2	RX	7	TX
3	TX	4	RX
5	GND	5	GND

Terminal of HMI is DB9F, and that of LG Master-K series PLC is DB9M.

  

RS232-Employ KLoader protocol

SK HMI COM1/COM2		LG Master-K
2	RX	3	TX
3	TX	2	RX
5	GND	5	GND

Terminal of HMI is DB9F, and that of LG Master-K series PLC is DB9M.

 

RS485

SK HMI COM1/COM2		LG Master-K
8	D-	B
9	D+	A

 

Terminal of HMI is DB9F, and that of LG Master-K series PLC is two-wire terminal.

 

RS232-K10S1

SK HMI COM1/COM2		LG Master-K
2	RX	4	TX
3	TX	1	RX
5	GND	6	GND

Terminal of HMI is DB9F, and that of LG Master-K series PLC is MD6M.

   

2.      Software settings

Select LG Industrial Systems in connection device service.

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

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

For settings of the PLC connected, refer to the technical documents of the LG Master-K series PLC.

Default connection parameters of SK HMI

Setting item	Default parameter value	Setting scope
PLC type	LG Master-K Cnet	LG Master-K Cnet/K Loader/K10s1
Communication port type	RS232	RS232/RS422/RS485
Baud rate	19200	1200/2400/4800/9600/19200/38400/57600/115200
Data bit length	8	7/8
Parity bit	NONE	EVEN/ODD/NONE
Stop bit length	1	1/2
PLC station number	0	0~255
HMI station number	0	0~255

 

Supporting function	Whether it is supported
Off-line simulation	Yes
On-line simulation	Yes
Extended mode	Yes

3.      Operational register and address range

Operational address range of Kxxx series PLC:

Register name	Address format	Input range	Remarks
P_Bit	dddh	0~255f	Bit: input/output area
M_Bit	dddh	0~255f	Bit: auxiliary relay
K_Bit	dddh	0~255f	Bit: protection relay
L_Bit	dddh	0~255f	Bit: link relay
F_Bit	dddh	0~255f	Bit: special relay
P	dddh	0~255f	Word: input/output area
M	dddh	0~255f	Word: auxiliary relay
K	dddh	0~255f	Word: protection relay
L	dddh	0~255f	Word: link relay
F	dddh	0~255f	Word: special relay
T	ddd	0~255	Bit: timer relay
C	ddd	0~255	Bit: counter relay
S	dddd	0~9999	Word: stepping register
D	dddd	0~9999	Word: data register
TV	ddd	0~255	Word: current value of timer
CV	ddd	0~255	Word: current value of counter

XGB CPU series PLC operable address range (via PLC RS232 download port communication)：

寄存器名称	地址格式	输入范围	备注
P_Bit	ddddh	0-1023f	Bit: input/output area
M_Bit	ddddh	0-1023f	Bit: auxiliary relay
F_Bit	ddddh	0-1023f	Bit: special relay
L_Bit	ddddh	0-2047f	Bit: link relay
K_Bit	ddddh	0-4095f	Bit: protection relay
D_Bit	ddddh	0-10239f
T	dddd	0-1023	Bit: timer relay
C	dddd	0-1023	Bit: counter relay
TV	dddd	0-1023	Word: current value of timer
CV	dddd	0-1023	Word: current value of counter
P	dddd	0-1023	Word: input/output area
M	dddd	0-1023	Word: auxiliary relay
F	dddd	0-1023	Word: special relay （read only）
L	dddd	0-2047	Word: link relay
K	dddd	0-4095	Word: protection relay
D	dddd	0-10239	Word: data register
R	dddd	0-10239	Word: stepping register
ZR	dddd	0-10239	Word:
S	ddd	0-127	Word: stepping register
Z	ddd	0-127	Word:
U	dd.dd	0.0-10.31	Word：（read only）

Operational address range of XGB CNET series PLC:

Register name	Address format	Input range	Remarks
P	dddh	0~127f	Word: input/output area
M	dddh	0~255f	Word: auxiliary relay
K	dddh	0~2559f	Word: protection relay
L	dddh	0~1279f	Word: link relay
F	dddh	0~255f	Word: special relay
T	ddd	0~255	Bit: timer relay
C	ddd	0~255	Bit: counter relay
S	ddd	0~127.99	Word: stepping register
D	dddd	0~5119	Word: data register
N	dddd	0~3935
Z	ddd	0~127
ZR	dddd	0~1023
U	d	0~7.31

XGB TCP/IP

寄存器名称	地址格式	输入范围	备注
P_Bit	ddddh	0-2047f	Bit: input/output area
M_Bit	ddddh	0-2047f	Bit: auxiliary relay
F_Bit	ddddh	0-2047f	Bit: special relay
L_Bit	ddddh	0-4095f	Bit: link relay
K_Bit	ddddh	0-8191f	Bit: protection relay
T	dddd	0-2047	Bit: timer relay
C	dddd	0-2047	Bit: counter relay
TV	dddd	0-2047	Word: current value of timer
CV	dddd	0-2047	Word: current value of counter
P	dddd	0-2047	Word: input/output area
M	dddd	0-2047	Word: auxiliary relay
F	dddd	0-2047	Word: special relay （read only）
L	dddd	0-4095	Word: link relay
K	dddd	0-8191	Word: protection relay
D	ddddd	0-19999	Word: data register
R	ddddd	0-16383
S	ddd	0-127	Word: stepping register
Z	ddd	0-127
U	dd.dd	0.0-11.31
N	ddddd	0-10239	Word：（read only）

Note:

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

h represents hexadecimal system, input range is 0-9, a-f;

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;

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