3
Connection example
Note: Signal polarities (A, B) of some host computers may be reversed.
SG is not available for some host computers.
RS-422 RS-485
Terminating resistor
(May be built into the
host computer.)
Terminating resistor
(May be built into the
host computer.)
Connect the terminating resistor
only to the indictor which is furthest
from the host computer.
RDA
RDB
SDA
SDB
SG
RDA
RDB
SDA
SDB
TRM
SG
RDA
RDB
SDA
SDB
TRM
SG
RDA
RDB
SDA
SDB
TRM
SG
A
B
SG
RDA
RDB
SDA
SDB
TRM
SG
RDA
RDB
SDA
SDB
TRM
SG
RDA
RDB
SDA
SDB
TRM
SG
Host computer
AD-4329A
Address=1
AD-4329A
Address=2
AD-4329A
Address=10
Host computer
AD-4329A
Address=1
AD-4329A
Address=2
AD-4329A
Address=10
