Cameron NUFLO 1141C, User Manual

Page: 35 / 120

Chapter 3: Main Circuit Board Wiring
35
Figure 3.6— CN11 jumper, SW2, SW1, CN3, and FPGA Load jumper
Pulse Input (SW5) SW5 is a six-position DIP switch that allows the user to configure the
desired electrical interface. Resource A07 uses terminals 23-24 and SW5 of
the DIP switch. If these terminals are not on the main board, the frequency
pulse input option is not installed. See
Frequency Pulse Inputs , page 44 ,
for DIP switch settings and wiring diagrams for various electrical
interfaces.
Super Boot (SW4) When the SW4 button is pressed (Figure 3.5) and the Scanner 1141 is
turned on, a “superboot” occurs. A “superboot” erases all configuration and
flow data and is required when first commissioning the unit [after turning
the NVRAM battery switch (CN21) on].
A superboot is required for changes to the RAM Size jumper (CN11)
settings to become effective. (See RAM Size description on page 36.)
When the SW4 is not pressed and the Scanner 1141 is turned on, a normal
restart occurs, as described in
Startup Procedure , page 55 .
For more information, see Superbooting the Scanner , page 55 .
Program Erase (SW3) SW3 enables programming of the FLASH memory array by connecting the
+12V programming voltage to the VPP pin of each of the FLASH memory
devices.
Unless new firmware is being downloaded to the system, do
not press SW3 when the power is turned on.