PC/104-Plus or PCI-104 48 and 96-Channel Digital I/O with Change-of-State
- PC/104-Plus (PCI-104 Optional)
- 48 or 96 Channel TTL-DTL high speed digital I/O
- Software selectable in vs. out as 8 bit and 4 bit ports
- Emulates 4 industry standard 8255 PPIs (mode 0)
- Full 32-bit PCI interface design
- Buffered circuits for higher driving capacity
- Low CPU overhead
- Known power-up states
- Output port status read back
- Standard 50-pin IDC connectors (x4)
- 0 to +70° C and -40 to +85° C versions available
- RoHS Available. Please contact us for ordering information
Outputs of the I/O buffers are pulled up through 10KO resistors to +5VDC.
I/O wiring connections are via 50-pin headers on the board. This provides compatibility with OPTO-22, Gordos, Potter & Brumfield, Western Reserve Controls, etc. module mounting racks. Every second conductor of the flat cables is grounded to minimize crosstalk between signals. If needed for external circuits, +5VDC power is available on each I/O connector at pin 49. If you use this power, we recommend that you include a 1A fast blow fuse in your circuits in order to avoid possible damage to the host computer.
The card occupies 32 addresses within the PCI I/O space. The base address is assigned by the system. Refer to the Option Selection Section of this manual for a detailed description.
Drivers and Downloads
ACCES also offers Custom Software Services for our products. Our prices are unbelievably low, often as inexpensive as free! If you need something tweaked to support your needs, or an entire enterprise application developed from scratch, it is definitely worth your time to inquire with us, first.
Further information about available ACCES Software:
- Redistributing Windows Drivers
- A list of ACCES drivers and the files that compose them under different versions of Windows, so you can easily redistribute ACCES cards and drivers.
Data Transfer Rate, I/O Mapped
- I/O connector to/from PCI bus: 7.37M bytes per second
Digital Inputs (TTL Compatible)
- Logic High: 2.0 to 5.0 VDC
- Logic Low: -0.5 to +0.8 VDC
- Input Load (High): 10µA
- Input Load (Low): -10µA
- Logic High: 2.5 VDC min., source 32 mA
- Logic Low: 0.5 VDC max., sink 64 mA
- Power Output: +5 VDC from computer bus (onboard resettable 0.5A fuse) on each digital group's I/O connector
- Power Required: 290 mA typical at 5V (all I/O pins disconnected, all I/O ports set as inputs)
- Operating Temperature: -20°C to +70°C
- Humidity: 0 to 90% RH, non-condensing
- Storage Temperature: -50°C to +120°C
CE testing & approval must be done at the system level, in the designed enclosure, and is not done on individual boards.