Bennett 3000 Series Operator's Manual page 32

Dual Product Dispenser
Dual Product Dispenser
Dual Product Dispenser
Dual Product Dispenser
Fleet System Communication - Pulse Output
Side 1
Cpu
Pulse Output
Pulse Output Bd.
Cpu
Side 2
Tank Monitor
3000 Series Retail Operators Manual 108796 Rev C, 07/05
32
Current Loop Communication
515 Box
Figure 1
RS485 Communication for
Fleet Management System
(common)
(common)
Figure 2
Fleet System
Pulse Output
Figure 3
Current Loop is when you have 2 com wires running to
each Cpu and a model 515 box. Mode 21 is set to "Current
Loop" and Mode 22 (Dispenser Address) is set to 0 for each
CPU. The "address" is determined by where it is connected
in the 515 box.
Verifone
Console
(+)
(-)
(+)
(-)
As an alternative, with a Fleet System,
the dispenser has a Pulse Output board.
This board is field wired to the Fleet
System. This board also connects to up
to 2 Cpu's in the dispenser. It talks to the
Cpu's using RS485 communication.
Therfore, mode 21 should be set for
RS485. Also, when using RS485 you
must give each Cpu an address so that the
Pulse Output board knows which one it is
talking to. So, when using a Pulse output
board with a Fleet System, address side 1
with address 1 and side 2 with address 2
always. A Dual Cpu dispenser you will
address side 1 with address 1 and side 2
with address 2. A "Quad" or 4 Cpu dis-
penser will have addresses 1, 2, 3, and 4.
1&2 will be connected to the first pulse
output board and 3&4 will be connected
to the second pulse output board.
RS485 communication uses 3 wire to
the first cpu in the dispenser and daisy
chains to any other cup's in that same
dispenser. This is for Fleet Systems that
use RS485 communication. So, each
Cpu must be programmed with a unique
address in mode 22. In this case, each
cpu was programmed with a different
address so that the console knows
which one it is talking to. Single Cpu
dispenser address the CPU with 1.
A Dual Cpu dispenser you will address
side 1 with address 1 and side 2 with
address 2. A "Quad" or 4 Cpu dis-
penser will have addresses 1, 2, 3, and
4.