Kontron Embedded Computers PCI - 960 User Manual page 21

9.1.2.3. JP5: Disable CMOS Backup Restore Function
This jumper prevents the use of CMOS backup (in the case that the CMOS data are invalid). Set jumper (JP5) prevents,
that wrong settings of the backup are loading. The system boots using the "power on defaults" from onboard RAM.
In order to change a jumper setting, please turn off the computer and unplug the power source to the
board. Otherwise, the board could be damaged.
JP5: Pin Row, DIP 2-pin
1 2
1 2
9.1.2.4. JP1: Power Supply Configuration
The power button is used to switch the system between the off and on state. If the JP1 jumper is set, the ON/OFF
function of the power button is ignored, and the system is always ON (power supply).
JP1:-Pin Row, DIP 2-pin
1 2
1 2
9.1.2.5. JP2 and JP3: Jumpers for COM2 Configuration as RS422 or RS485
The serial port COM2 (RS232 default setting) can be configured in the BIOS setup RS422 or RS485.
The JP2 and JP3 jumpers allow you to connect or disconnect the termination resistors (120 ohm) on / from the serial port
COM2, when the operation mode in the BIOS is set to RS422 or RS485.
When installing the board at one end of the network, JP2 and JP3 jumper caps must be installed to
connect the 120 ohm termination resistors.
In RS422 mode, both jumper caps (JP2 and JP3) must be installed to connect the 120 ohm line
termination resistors.
JP2:-Pin Row, DIP 2-pin
1 2
1 2
JP3:-Pin Row; DIP 2-pin
1 2
1 2
The serial port COM2 (RS232 default setting) can be configured in the BIOS setup RS422 or RS485.
Refer to BIOS settings for COM2 configuration as RS422 and RS485.
PCI-960 – User's Manual (V1.02)
Setting Function
Pin 1-2 CMOS Backup-Function is enabled
Open (Default)
Pin 1-2 CMOS Backup-Function is disabled
Short/Closed
Setting Function
Pin 1-2 The ON/OFF-button switches the system ON or OFF. (ATX
Open (Default) Power Mode)
The function of the ON/OFF-button is ignored.
Pin 1-2
Closed
System behaviour: like an AT-system.
Setting Function COM2 (RS422)
Pin 1-2 RS422 with connected termination resistor
Short/Closed
Pin 1-2
RS422 without connected termination resistor
Open (Default)
Setting Function COM2 (RS485 or RS422)
Pin 1-2 RS485 or RS422 with connected termination resistor
Short/Closed
Pin 1-2
RS485 without connected termination resistor
Open (Default)
9. Jumpers and Connectors Overview
19