Technical information

OPTO DIO Reference Opto DIO16
CHAPTER 3
OPTO DIO16
CONFIGURATION.
Introduction.____________
Read Chapter 1 first. This chapter shows how to configure
the Opto DIO16 card ready to install in a PC by setting the
address select switch and the output driver select block. There is
no interrupt or Watch Dog capability on the Opto DIO16.
Opto DIO16 will fit into either 8 or 16 bit slots.
Configuring The Opto DIO16 Card._______________________________
The Opto DIO16 card is ready to plug straight into a PC.
Unless there is Good Reason, do not alter its default setting.
However, due to the large variety of individual PC
configurations Opto DIO16 may need adjusting to suit the PC.
The card layout is shown in Figure 3-1. The default settings are
i/o address 0308Hex. The source cards have UDN2984 and the
sink cards have ULN2803 chips installed.
The Opto DIO16 requires an external power input to power
the output drivers and the isolated side of the opto couplers. On
card power regulation allows the use of external un-regulated
power source, input range 17.5 - 35 Volts. The power supply
input is reverse polarity protected.
Setting The Opto DIO16 I/O Address._________________________________
By referring to the Opto DIO16 card locate the 6 way DIP
switch at the lower left hand corner of the card.
The factory set address, 0308H, is set as shown in Figure
3-2. DIP switches control the base address selected, switches 1-6
correspond to the A3-A8 address lines. The Opto DIO16 card
can reside at one of 64 base addresses on an 8 byte boundary
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