User manual

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Step 5: The function switch setting shows up
10. S_422:
(Switch), COM1 setting, it provides selectable RS232 or RS422 or RS485 serial signal
output.
Function
S_422 Pin#
RS232
(Default)
OFF:
Pin1, Pin2, Pin3, Pin4
RS422
(option)
ON:
Pin1, Pin2, Pin3, Pin4
RS485
(option)
ON:
Pin1, Pin2, Pin3, Pin4
11. COM1:
(Type DB9),Rear serial port, standard DB9 Male serial port is provided to make a direct
connection to serial devices. COM1 port is controlled by pins No.1~6 of JP1,select output
Signal RI or 5V or 12V, For details, please refer to description of JP1 and S_232 and
S_422 setting.