Bennett 3000 Series Service Manual page 39

Pulse output test circuit - The pulse output
board has a test circuit to see if it is working
properly. On the drawing you see a test
cable and some jumpers JP5, JP6, JP7, JP8.
Normally jumpers JP5,6,7,8 are all shunted
(jumped). This allows the pulse output to
reach the specific terminals on TS1. If you
want to test the pulse output channel, follow
these steps:
Testing the circuit - You will be removing the
jumper from the channel that you want to test and
connecting the Red/Black cable that is on the board.
You cannot plug this connector on backwards. Then,
when you run a sale, you can view the TEST LED. It
should pulse according the pulse ratio that is
selected on jumper header JP1. To test Side 1 pulse
output to the Fleet System :
1)Remove the jumper from JP5.
2)Connect the Red/Black test cable to JP5
3)Run a sale and view the TEST LED. It should
flash for every pulse transmitted.
4)After the test remove the cable and replace the
jumper across JP5.
CPU communication - The CPU communicates
with the Pulse Output board through connector J8 on
the CPU to either J1 (side 1) or J2 (side 2) on the
Pulse Output board. +12 volts and +24 volts are
supplied from the CPU to the Pulse Output board.
Also, 3 RS485 wires for communication between the
boards are on this connection.
LED's - Communication LED's are provided on this
board that show communication between the Pulse
Output board and each CPU. They are marked:
D9 - LED communication with side 1 CPU.
D10 - LED communication with side 2 CPU.
In normal operation these two green LED's will be
flashing when communicating with it's CPU. If the
LED is not blinking (on steady) OR not lit, the board
is not communicating with that LED.
These LED's get their communication through
connectors J1 and J2.
Pulse Output Board (Optional)
Mode 21 set to RS485 and Mode 22
39
Mode 21 set to RS485 and Mode 22
set to address 1
CPU 1
Product 1
J8
J1
JP1 JP2
Red
D 9
Black
Test Cable
TEST LED
D 2
JP5 JP6 JP7 JP8
TS1
set to address 2
CPU 2
Product 2
J8
J2 Pulse Output
Board
D 10
D 3 D 6
D 4 D 7
TS2 TS3
(+) (-)
(+) (-)
107932 Rev G 4-24-17