Serial Communication Converters & Adapters Instruction Manual
10
PDA7232 Trident RS-232
Serial Adapter
Description
The PDA7232 converts the serial output of the
PD765 Trident meter to an unbalanced, full-
duplex RS-232 signal.
The RS-232 port has a female DB9 connector
with pins 2 (RX output),
3 (TX input), and 5 (Signal Ground). Pins 7
(RTS) and 8 (CTS) are tied together, and pins 1
(CD), 4 (DTR), and 6 (DSR) are tied together.
The adapter is powered by the PD765 Trident
meter.
Baud rates are adjustable and handled by the
PD765 (see the Trident Instruction Manual for
more details).
The PDA7232 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 Trident PD765 meter.
Installation
Figure 7 shows the connection of a Trident
meter to a PC using the PDA7232 serial
adapter. The PDA7232 has an RJ11 connector
to connect the PDA7420 modular cable and a
PC compatible 9-pin D subminiature connector
(DB9). The DB9 can be connected directly to the
PC or by using a standard serial extension
cable.
Figure 7. RS-232 Adapter Connections
Connections
A PDA7420 cable is provided to connect the
Trident meter to the PDA7232 serial adapter.
Figure 8 shows the PDA7420 cable details.
Figure 8. Standard Modular Cable Wiring
PD765 Serial Communication Address (
serl
)
For the PD765 Trident meter the address may
be programmed from 00 to 99 for PDC Protocol
and from 1 to 247 for Modbus RTU. The PD765
Trident meter is factory set to PDC Protocol at
address 00.
To change the PD765 Trident meter address:
1. Press and hold
Right
arrow and
Menu
buttons for three seconds to access
Advanced Features menu of the meter.
2. Press
Up
arrow until Serial (
SErL
) menu
is displayed and press
Enter/Ack
,
Addr
is displayed.
3. Press
Enter/Ack
to change meter
address using
Right
and
Up
arrow
buttons. Press
Enter/Ack
to accept.
4. Press
Menu
button to exit and return to
Run Mode.
(WH) 1
(BK) 2
(R) 3
(G) 4
(Y) 5
(BL) 6
1
2
3
4
5
6
