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APAX-5580 User Manual
Appendix A
S
ystem
Settings
and
Pin
A
ssignments
Table A.2: COM 1 Mode Setting
SW1/SW4
COM1 RS232/422/485 mode setting
Description
This switch is used to select comport mode
Default
RS-232 Mode
SW1
SW4
RS-232 Mode
SW1: Bit 6,7,8,9,10 OFF
Bit 1,2,3,4,5 ON
N/A
RS422 Master Mode
SW1: Bit 6,7,8,9,10 ON
Bit 1,2,3,4,5 OFF
SW4: Bit 1,2 ON
RS422 Slave Mode
SW1: Bit 6,7,8,9,10 ON
Bit 1,2,3,4,5 OFF
SW4: Bit 1,2 OFF
RS485 Auto
Direction Mode
SW1: Bit 1,2,3,4,5,8,9 OFF
Bit 6,7,10 ON
SW4: Bit 1,2 OFF
Table A.3: SW2 Selection
SW2
Termination Resistor Select
Description
This switch is used to select Termination Resistor (120 ohm) for long dis-
tance transmission or device matching.
RS422 OFF
RS485 OFF
RS422 OFF
RS485 ON
RS422 ON
RS485 OFF
RS422 ON
RS485 ON
