Serial Communication Converters & Adapters Instruction Manual
25
Installation
Figure 9 shows the connection of a Trident meter to a PC using the
PDA7422 serial adapter and a PDA7485 RS-232 to RS-422/485 conver-
ter in an RS-422 network. The PDA7422 has an RJ11 connector to
connect the PDA7420 modular cable and a screw terminal connector to
connect to the RS-422 network. Figure 10 shows the connection of sev-
eral Trident meters with PDA7422 serial adapters to a PC using a
PDA7485 RS-232 to RS-422/485 converter in an RS-485 network.
PD765 Serial Communication Address (
serl
)
When using more than one meter in a multi-drop or multi-point mode,
each meter must be provided with its own unique address. 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.