Serial Communication Converters & Adapters Instruction Manual
20
Connections
A Cat5e cable is provided to connect the P
RO
V
U
meter to the PDA1485
adapter.
Figure 6 details the wiring connections from the PDA1485 to an
RS-422/485 serial converter (such as the PDA7485 or PDA8485) for a
four-wire network.
Figure 6. Connections for PDA1485 to Serial Converter
If the serial converter is 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 PDA1485 screw terminal connector is needed.
PDA1485 to RS-422/485 Serial
Converter Connections
RS-422/485
Serial Converter
PDA1485
RS-422/485 Adapter
DO
DI
DO
DI
DI
DO
DI
DO
