Serial Communication Adapters
Instruction Manual
9
Connections
A Cat5e cable is provided to connect the PRD1000 meter to the RS-485
serial adapter.
Figure 3 details the wiring connections from the RS-485 serial adapter to
a full-duplex RS-485 four-wire network device.
Figure 3. Connections for RS-485 Adapter to Serial Converter
If the RS-485 device configured for a two-wire network then the re-
quirement to externally wire the DO to the DI and the /DO to the /DI on
the RS-485 serial adapter screw terminal connector is needed.
RS-485 serial adapter to
RS-422/485 Serial Converter Con-
nections
RS-485
Serial Converter
RS-485 Adapter
DO
DI
DO
DI
DI
DO
DI
DO
