2 Startup Manual
Please follow the below description to set the COM
ports and IRIG-B interface, please also refer to the
UNO-4672’s user manual and software manual in the
IRIG-B driver for detailed function description:
1. Selection of RS-232 or RS-422/485
RS-232 Jumper Setting (Default)
RS-422/485 Jumper Setting
2. Switch the RS-485 auto-flow control or RS-422 Mas-
ter/Slave mode (SW1)
3. Setting the Terminal Resistor
4. Setting the RS-422 for Multi-master application
5. Selection of IRIG-B TTL Output
COM Port Configuration
COM port
Jumper
COM11
JP1
COM12
JP3
COM13
JP5
COM14
JP7
COM15
JP9
COM16
JP11
COM port
DIP of SW1
COM11
DIP1
COM12
DIP2
COM13
DIP3
COM14
DIP4
COM15
DIP5
COM16
DIP6
SW1 Status
Description
ON
RS-422: Master mode
RS-485: N/A
OFF(Default)
RS-422: Slave mode
RS-485: Auto flow control
F
G
H
I
E
D
C
B
A
J
F
G
H
I
E
D
C
B
A
J
COM port
Jumper
COM11
JP2
COM12
JP4
COM13
JP6
COM14
JP8
COM15
JP10
COM16
JP12
IRIG RS-485
JP13
Short
Description
1-3
Add 120 Ohm termial resistor on Tx+/Tx- of
RS-422 or Data+/Data- of RS-485
3-5
Add 300 Ohm termial resistor on Tx+/Tx- of
RS-422 or Data+/Data- of RS-485
2-4
Add 120 Ohm termial resistor on Rx+/Rx- of
RS-422
4-6
Add 300 Ohm termial resistor on Rx+/Rx- of
RS-422
COM port
Switches
Status
COM11
SW2
ON: Normal (default)
OFF: RS-422 multi-master
COM12
SW3
COM13
SW4
COM14
SW5
COM15
SW6
COM16
SW7
Short
Description
1-2
Output from Input
2-3
Output through Buffer
1
3
5
2
4
6
