Cameron NUFLO 1141C, User Manual

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Scanner 1141 Hardware User Manual
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CN20 Backup Battery Enables and disables the
lithium backup battery power
to the NVRAM Position jumper across
upper pins to enable lithium
backup battery; position
jumper across bottom pins to
disable lithium backup
battery.
SW6 Serial Port A02
RS-485 termination and
pullup/pulldown resistors See Auxiliary Serial Ports ,
pg. 51 .
SW5 Pulse Input A07 Supports frequency pulse
inputs from turbine magnetic
pickups, preamplified turbine
signals, open-collector and
contact closures with a
debounce filter. See Frequency Pulse
Inputs , pg. 44 .
SW4 Super Boot Erases all configuration and
flow data Hold button in while turning
power on.
SW3 Program Erase Erases FLASH ROM
application program so that
new firmware can be
FLASHED Hold button in while turning
power on.
CN11 RAM Size select Determines how the
system’s base 256 Kbytes of
memory is partitioned Move jumper to “high” or top
position to select 96K RAM
and 164 Kbytes of NVRAM;
move jumper to “low” or
bottom position to select 64K
RAM and 192 Kbytes of
NVRAM.
SW2 Serial Port A21 RS-485 termination and
pullup/pulldown resistors See Auxiliary Serial Ports ,
pg. 51 .
SW1 Pulse Input A14 Supports frequency pulse
inputs from turbine magnetic
pickups, preamplified turbine
signals, open-collector and
contact closures with a
debounce filter. See Frequency Pulse
Inputs , pg. 44 .
CN3 Analog Output mode Analog output fail mode
goes to zero or holds last
value when Scanner 1141 is
off. When Scanner is turned off,
with jumper in upper position
(Zero), the output will go to
approximately 1 mA. With
jumper in lower position
(Last), the output will be held
in last known position.
CN4 FPGA Load Jumper Enables programming of the
FLASH memory “boot” block
Jumper should always be in
place.