Un-Buffered
IOD-24E, IOD-96E, and IOD-96M
Digital Input/Output Cards
FEATURES
- 24
or 96 channels of un-buffered digital I/O
- Four-
and eight-bit groups independently programmable
- Cable
crosstalk suppression by grounds on all even-numbered
connector pins
- 50-pin
connector for compatibility with Western Reserve Controls,
Opto-22, Gordos, Potter 7, Brumfield, etc.
- External
interrupts
FUNCTIONAL
DESCRIPTION
These
are economical 24- and 96-bit half- and 3/4- size cards
respectively. A Programmable Peripheral Interface chip,
type 8255-5, provides three 8-bit ports (A, B, and C) for
each 24-bit group. Each port can be independently programmed
for either input or output. Port C can also be configured
as two 4-bit ports. These cards fully implement Mode 0 of
the PPI chip. (Consult factory if you desire to operate
in Mode 1.)
Model
IOD-96M is electrically and software interchangeable with
the Keithley Metrabyte model PIO-96 and the Computer Boards
Inc Model CIO-PIO96. IOD-96E and IOD-96M have added capability
compared to the two competitor units in that external interrupts
can be supported under program control. Two lines on Port
C can be used for this purpose. Bit C7 can accept inputs
to enable/disable this interrupt capability and Bit C3 can
accept the external interrupts. If the cards are to be operated
in this mode, jumper placement on the card permits selection
any one of levels #2 through #7. Interrupts from all four
ports (one per port) are OR'ed together.
Card
I/O bus address selection is by DIP switches on the cards.
The 96-bit cards use 16 address locations on the computer
I/O bus. Input/Output connections to IOD-24E are via a 50-pin
connector. I/O connections to the 96-bit cards are via four
50-wire ribbon interface cables that extend through rectangular
cut- outs in the mounting bracket and plug into headers
on the card. IOD-96E and IOD-96M units required to meet
EU "CE" requirements are supplied with blank mounting brackets.
That permits you to use cabling methods that best fit your
application. Strain relief is provided for these cables.
Ready-made displacement type ribbon cables are available
from ACCES as p/n CAB50F-xx. Alternate wires are connected
to ground to provide shielding and minimize crosstalk.
On
power-up or reset, all ports are automatically configured
as inputs. This prevents spurious outputs. Before use, of
course, each PPI should be software configured by writing
to it's control register.
SPECIFICATIONS
Digital
Inputs
- Logic
High: 2.0 to 5.0 VDC
- Logic
Low: -0.5 to 0.8 VDC
- Input
Load (Hi): +10 micro amperes
- Input
Load (Lo): -10 micro amperes
Digital
Outputs
- Logic
High: 2.5 VDC min.,source 200 micro amperes
- Logic
Low: 0.5 VDC max., sink 1.7 milliamperes
Power
Output
- +5
VDC from computer bus. External fast-blow fuse recommended.
Environmental
- Power
Required: IOD-24E: +5 VDC at 100 mA typical; IOD-96E
and IOD-96M: +5VDC at 400 mA typical
- Size:
IOD-24E: 5.0 in. long (12.7 cm); IOD-96E and IOD-96M:
7 in. long (17.8 cm)
- Operating
Temperature Range: 0o to 60 oC
- Storage
Temperature Range: -50o to 120 oC
- Humidity:
0 to 90% RH, non-condensing
Regulatory
Compliance 
Declaration of Conformity, and Test Reports are on file.
Users must use appropriate shielded cables.
| Part
Number |
Price(USD)
|
| IOD-24E |
46.00
|
| IOD-96E |
116.00
|
| IOD-96M |
116.00
|
View / Download IOD-24E
Manual (in .PDF format)
View / Download IOD-96E
Manual (in .PDF format)
View / Download IOD-96M
Manual (in .PDF format)
