Gasboy CFN Series Diagnostic Manual - Manual (Page 198)

GASBOY CFN Series
6-8 12/26/02
SB - Baud Rate Switches
The baud rate switches select the baud rate for
the serial communications on the RS-422 line.
They should always be set for 9600 baud.
SC - Switch Detect Mode Switches
These switches determine when the pump control unit begins counting pulses for a particular
pump. When a switch is open, the PCU begins counting pulses when the corresponding pump is
activated. When a switch is closed, the PCU doesn't count pulses for the corresponding pump
until the mechanical reset has completed. The switch should be closed when the pump is wired
for postpay-prepay console operations.
SC - Miscellaneous Switches
These switches are used to set the basic configuration of the PCU.
CRC This switch should always be open to allow data integrity checks to be performed on the
data going between the PCU and the site controller.
DEAD This switch enables the deadman timer. It should always be open.
TEST When open, this switch enables the test mode, allowing the basic PCU functions to be
tested without the use of a site controller. See Diagnostic Tests later in this section for
instructions.