Gasboy CFN Series Diagnostic Manual - Manual (Page 202)

GASBOY CFN Series
6-12 12/26/02
Jumper
Jumper K1, when installed, allows battery backup power to the RAM IC at U13. The jumper
should be installed during normal operation and removed for storage. The CPU board is shipped
with K1 removed.
Switches
SA - Reset Switch
The Reset switch starts a hardware and software reset of the CPU PCB. The SB and SC switch
settings are read when a reset occurs (and at power up). This switch should be pressed
whenever switch settings are changed.
SB - Address Switches
An address must be set to identify
the pump control unit when it is
connected to the GASBOY CFN
Series Fuel Management System.
This address is a unique identifier
for when multiple PCU's are
connected on the same RS-422
line. Addressing should start at 1
and continue sequentially through
16. The physical wiring order does
not have to correspond with the
address order, that is, the first unit
on the RS-422 line does not have to
be address 1. The chart on the
right gives the switch settings for
the address selections.
SB - Pulser Select Switch
The pulser select switch is set for either single or dual
pulsers. If dual pulsers are selected, all pumps on the
pump control unit must have dual pulsers.
NOTE: The dual pulser type feature requires a PPC Motherboard II and a PPC I/O PCB II.
Both are not yet available; therefore, this switch should be closed.