Power On Configuration; Table 2.10:Digital Output Power On Configuration; Isolated Outputs - Advantech UNO-3074 User Manual

Celeron m/ pentium m embedded automation computer with four pci slot extensions

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2.6.2 Power On Configuration

Default configuration after power on or hardware reset is to set all the iso-

lated digital output channels to open status (the current of the load can't be

sink) so that users need not worry about damaging external devices during

system startup or reset. When the system is hot reset, then the status of iso-

lated digital output channels are selected by jumper JP7. Table 2.10 shows

the configuration of jumper JP7.

Note:

Please refer to Figure A.3 for location of JP7

Table 2.10: Digital Output Power On Configuration

JP7

Each of isolated output channels comes equipped with a Darlington tran-

sistor. All output channels share common emitters.

Please note that if an external voltage (5 ~ 40 VDC) is applied to an iso-

lated output channel while it is being used as an output channel, the cur-

rent will flow from the external voltage source to the UNO-3074. Please

take care that the current through each DO pin not exceed 200 mA. Figure

2.7 below shows how to connect an external output load to the UNO-3074

isolated outputs.

Please note that DO2 and DO3 may be configured as output pins of Coun-

ter 0 and Counter 1 (please refer to section 2.7 for more details)

UNO-3074 User Manual

Power on configuration after hot reset

Reset all digital output

(default configuration)

Keep last status after hot reset

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