Serial Communication Adapters
Instruction Manual
6
RS-485 SERIAL ADAPTER
Description
The RS-485 serial adapter converts the serial output of the PRD1000
meter to balanced, full or half-duplex RS-485 signals.
The RS-485 serial adapter has a removable screw terminal connector
for the RS-485 terminals which includes Transmit Data (DO) and (/DO),
Receive Data (DI) and (/DI), and Signal Ground. The adapter is provid-
ed by the PRD1000 meter M-Link connection.
Baud rates are adjustable and handled by the PRD1000 (see the
PRD1000 Instruction Manual for more details).
The RS-485 serial adapter 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 PRD1000 meter.