Serial Communication Converters & Adapters Instruction Manual
16
PDA1485 P
RO
V
U
RS-422/485 SERIAL ADAPTER
P R E C I S I O N D I G I T A L
DI
DI
DO
DO
Description
The PDA1485 converts the serial output of the P
RO
V
U
meter to ba-
lanced, full or half-duplex RS-422 or RS-485 signals.
The PD1485 has a removable screw terminal connector for the
RS-422/485 terminals which includes Transmit Data (DO) and (/DO),
Receive Data (DI) and (/DI), and Signal Ground. The adapter is pro-
vided by the P
RO
V
U
meter M-Link connection.
Baud rates are adjustable and handled by the P
RO
V
U
(see the P
RO
V
U
Instruction Manual for more details).
The PDA1485 has three diagnostic LEDs: a Power (P) LED to show
when the adapter is powered properly, a Transmit Data (TX) LED to
show when the adapter is sending data out from the PC side, and a
Receive Data (RX) LED to show when the adapter is receiving data
from the P
RO
V
U
meter.
