Startup Manual
3
Isolated Digital Output Connections
PCI-1758UDO has 128 isolated digital output channels
designated
P0_IDO00~7, P1_IDO00~7, P2_IDO00~7,
P3_IDO00~7, P4_IDO00~7, P5_IDO00~7,
P6_IDO00~7, P7_IDO00~7. P8_IDO00~7,
P9_IDO00~7, PA_IDO00~7, PB_IDO00~7,
PC_IDO00~7, PD_IDO00~7, PE_IDO00~7, and
PF_IDO00~7.
Power On Configuration
The default configuration will be set after power is
turned on. The hardware reset sets all the isolated out-
put channels to “off” status (The current of the load can
not be sink mode). So you do not need to worry about
damaging external devices during system startup or
reset. When the system is hot reset, the status of the iso-
lated digital output channels can be selected by jumper
JP1. The following table shows the configuration of
jumper JP1.
Isolated Output
Each of the isolated output channels is equipped with a
Darlington transistor. All of the 16 output channels
shares common collectors and integral suppression
diodes for induction coil loads.
Note: If an external voltage (5 ~ 40 V
DC
) is applied to
an isolated output channel while it is being used as an
output channel, the current will flow from the external
voltage source to the card. Please be cautious about that
the current flowing through each IDO pin can not
exceed 90 mA.
Signal Connections
