AOpen WARM TOUCH WT22M-RH Technology Manual page 35

COM2 RS232/485/422 Setting
Default Setting
J1
RS232 1-2
RS422 3-4
RS485 5-6
COM1, COM2, COM3 & COM4 RI or Power Setting
Default Setting
Jumper J5
Port COM1
RI 1-2
5V 3-4
12V 5-6
COM2 setting
J2 J3
3-5 3-5
4-6 4-6
1-3 1-3
2-4 2-4
1-3 1-3
2-4 2-4
RI Power
J6 J7
COM2 COM3
1-2 1-2
3-4 3-4
5-6 5-6
35
J4
1-2
3-4
5-6
N/A
N/A
N/A
N/A
N/A
N/A
J8
COM4
1-2
3-4
5-6