Supplying External Devices Via The Can Connector - Peak PCAN-PC/104-Plus User Manual

PCAN-PC/104-Plus – User Manual
2.2 Supplying External Devices via the CAN
Connector
A 5-Volt supply can optionally be routed to pin 1 and/or pin 9 of a D-
Sub connector by setting solder bridges on the PCAN-PC/104-Plus
card (independently for each connector on the Dual Channel ver-
sions). Thus external devices with low power consumption (e.g. bus
converters or optocouplers) can be directly supplied via the CAN
connector.
When using this option the 5-Volt supply is connected to the power
supply of the PC/104 stack and is not fused separately. The opto-
decoupled versions of the card contain an interconnected DC/DC
converter. Therefore the current output is limited to 50 mA.
Attention! Risk of short circuit! If the option described in this
section is activated, you may only connect or disconnect CAN
cables or peripheral systems (e.g. bus converters or optocoup-
lers) to or from the PCAN-cPCI card while the computer is de-
energized.
Set the solder bridges on the PCAN-PC/104-Plus card according to
the desired settings. During this procedure take especially care not
to produce unwanted short circuits on the card.
The following Figure 2 shows the positions of the solder fields on
the PCAN-PC/104-Plus card; the table below contains the possible
settings.
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