Baker Hughes Apollo 3 - DIP Switches

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Page 27 of 277
Table 3: DIP Switches
Designator
Description
Default
SW1
Boot Select
Boot from SPI Data Flash
Leave at default
No SD Card is used in this
configuration.
*SPI Data Flash is required!
1 Off
2 On
3 On
4 Off
SW1
Boot Select
Boot from SD Card
Leave at default
A SD Card with the
appropriate boot file is
required in this configuration.
1 Off
2 Off
3 On
4 Off
SW2
Isolated RS-485 Termination
1. Shield Termination (Gnd)
2. 120 Ohm A to B Bus
Termination
3. 4.7K Ohm Bus Pull-up
4. 4.7K Ohm Bus Pull-down
1 On
2 Off
3 On
4 On
*The SPI Data flash is found on the back of the HMI board at position U7 (see Figure
4: SPI Data Flash , page 28).