Jetway Computer ADMPEOX4CA - Manual (Page 6)

5
Part II Jumper setting to select RS 232/ RS 485/ RS 422 Function
JP6&JP4 is used to select RS 232/RS 485/ RS 422 Function for COM5&JP5
JP3&JP1 is used to select RS 232/RS 485/ RS 422 Function for COM6&JP2
I.Pin1&Pin2 in both JP6& JP4 closed to select RS232 for COM5,
Or Pin1&Pin2 in both JP3&JP1 closed to select RS232 for COM6.
Pin1
JP3
JP4
II.Pin3&Pin4 in JP6/JP3 closed to select RS485 Function for JP5 or JP2,
Pin3&Pin4 in JP4 /JP1closed to Enabled +12V for JP5 or JP2
III.Pin5&Pin6 in JP6/JP3 closed to select RS422 Function for JP5 or JP2,
Pin5&Pin6 in JP4/JP1 closed to Enabled +5V for JP5 or JP2
1-2：RS232
3-4：RS485
5-6：RS422
1-2：RS232
3-4：+12V
5-6：+5V
JP6
JP1
Pin1
JP6/JP3
JP1/JP4
Flow Control:
RS485 Control by RTS signal. Programmer should set RTS signal high before
sending data.