Specifications

December 2008 Page 19–7
Chapter 19. Party Line Data (PLD) Module
19
Figure 19–3.
PLD Interface Module
4. Connect the PLD interface module to the
FOCUS chassis.
Attach the interface module to the rear of the
FOCUS chassis so that it connects to the PLD
module.
5. Connect your equipment to the PLD
interface module.
Use a DB9 male connector to connect your
equipment to the interface. The interface
board has one DB9 female connector, as
shown in Figure 19-3. The connector has
threaded standoffs so that you can secure the
cable you are connecting. We recommend you
use RS-232C cable with an outer shield. To
protect against applied transients, you should
ground the shield to the base terminal chassis
ground, pin 1.
Figure 19-3 also shows the pin assignments
for the DB9 female connector on the PLD’s
interface. Carefully wire the male connector
for your equipment accordingly. If you are
interfacing to the indicated Landis & Gyr or
VALMET equipment, refer to the pin assign-
ments in Table 19-1 through Table 19-5. If the
equipment being connected is a modem, a null
modem cable is required. See table 19–6 for
pinouts.
The equipment (e.g., modem, RTU, PC, or
other RS-232 device) you attach to the
module should be no more than 50 feet away.
19.3.2 Software Settings
Once you have completed the hardware installa-
tion and connections, you can configure the PLD
Module using the FOCUS Configuration Software
(FCS), which should already be up and running. If
you are installing multiple PLD modules, such as
a complete chain, or network, we recommend that
you configure each module as you install it, before
moving on to the next module/chassis.
Configuring a PLD Module is a two-part process.
First you assign the correct DS0 channel, or time
slot, and then you configure the module itself.
Remember that every PLD module on a chain, or
network, must have the same DS0 channel assign-
ment. That is, they must all share the same time
slot.
Whether your application calls for internal or
external addressing, you will need to configure the
PLD module attached to the master device as the
“head” module, the one attached to the last device
in the chain as the “end” module, and any in
between as “remote” module types. As noted
earlier, we recommend that you install and
configure the “head” module first, followed by
PLD
J3
Pin2–RD
Pin3–TD
Pin 1 – Protective
Ground
Pin 4 – DTR
Pin 5 – Signal
Ground
Pin 6 – DSR
Pin 7 – RTS
Pin 8 – CTS
Pin9–R
(Ring Indicator)
1
2
3
4
5
6
7
8
9
Master PLD
25-pin 9-pin
“D” Signal Direction “D”
2 TX data > 2
3RX data < 3
4 DTR/DCD > 8
5 GND 7
Table 19–6. Pin Assignments for Typical Modem
to FOCUS “Head” PLD.