ACCES I/O
ACCES I/O USB-DIO-32 32-bit parallel digital I/O with USB interface, rugged enclosure and screw terminal connector
Mfg Part Number: USB-DIO-32 , Item #: 571162
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The USB-DIO-32 features 32 bits of TTL-compatible digital I/O with high-current capabilities and three optional 82C54 counters. Each digital port can be programmed to accept inputs or to drive outputs on four 8-bit ports, designated as port A, B, C, and D. Power is supplied to the unit via the USB cable or for higher current capabilities, external power may be used. The I/O wiring connections for USB-DIO-32 are via an industry standard 50-pin connector. For external circuits, fused +5VDC power is available at the connector. This resettable fuse is rated at 0.5A.
All I/O lines are buffered by a type 74ABT245 tristate buffer transceiver capable of sinking 64 mA or sourcing 32 mA. The buffers are configured under program control for input or output. Pull-ups (to +5 VDC) or pull-downs (to ground) on the board allow for contact monitoring and assure that there are no erroneous outputs at power-up until the module is initialized by system software.
Unlike most USB digital I/O products which primarily use a
human interface device (HID) driver, ACCES offers an easy to use,
Windows-based, custom function driver optimized for maximum data
throughput. This approach exposes the full functionality of the
hardware along with maximizing the advantage of using the high-speed
USB 2.0 bus.
- High-Speed USB 2.0 device, USB 1.1 compatible
- Small (3.5 by 3.7 in.), portable, 32-channel USB digital I/O module
- Four 8-bit ports independently selectable for inputs or outputs
- All 32 I/O lines buffered with Sink 64mA / Source 32mA current capabilities
- Custom high-speed function driver
- Removable screw terminal adaptor for easy wiring
- Standard 50-pin IDC connector with key
- Rugged industrial enclosure
- Three 82C54 counter/timers
- External power for high current capabilities
- Economy "E" version also available without the screw terminal adaptor
- OEM (board only) version with pre-drilled mounting holes for added flexibility in embedded applications
- DIN rail mounting provision
The USB-DIO-32 is designed to be used in rugged industrial
environments
but is small enough to fit nicely onto any desk or testing station. The
board is PC/104 sized (3.550 by 3.775 inches) and ships inside a steel
powder-coated enclosure with an anti-skid bottom. The OEM (board only)
version is perfect for a variety of embedded applications. The board
features pre-drilled mounting holes and can be installed using
standoffs inside most enclosures or systems. PC/104 systems can easily
add this module to an existing stack using the conveniently sized
PC/104 mounting holes.
Applications
- Home
- Portable
- Laptop
- Education
- Laboratory
- Industrial Automation
- Embedded OEM
Three 82C54 chips each include three 16-bit counter/timers factory configured in an optimal module for use as event counters, frequency output, pulse width, and frequency measurement (see the Block Diagram).
ACCESSORIES
The USB-DIO-32 is available with optional cable assemblies, screw termination boards, and an optional external AC/DC power supply. The pin connections are also compatible with industry standard I/O racks such as ACCES A24A, OPTO22, Gordos, Potter & Brumfield, etc. with optional cable.
SOFTWARE
The USB-DIO-32 includes a free Windows 98se/Me/NT/2000/XP/2003 compatible software package. This contains sample programs and source code in Visual Basic, Delphi, C++ Builder, and Visual C++ for Windows. Also incorporated is a graphical setup program in Windows. Third party support includes a Windows standard dll interface usable from the most popular application programs.
Digital Inputs (TTL Compatible)
- Logic High: 2.0 to 5.0 VDC
- Logic Low: -0.5 to +0.8 VDC
Digital Outputs
- Logic High: 2.0 VDC min., source 32 mA
- Logic Low: 0.55 VDC max., sink 64 mA
Optional Counter/Timers
- Type: 82C54-10 programmable interval counters
- Output Drive:
- 2.0 VDC min., source 32 mA
- 0.55 VDC max,. sink 64 mA
- Input Gate: TTL/CMOS compatible
- Clock: On-board, 3 MHz crystal-controlled clock
- Active Count Edge: Negative Edge
- Minimum Clock Pulse Width: 30 nS high, 40 nS low
- Timer Range: 16 bits
- Maximum Input Frequency: 10MHz
Environmental
- Operating Temperature Range: 0° to 70°C
- Storage Temperature Range: -40° to +85°C
- Humidity: Maximum 90% RH, without condensation
- Board Dimension: 3.550 x 3.775 inches
- Box Dimension: 4.00 x 4.00 x 1.25 inches
Power
- +5VDC provided via USB cable up to 500mA**
- Basic Unit with Three Counters: 80mA typical (no load)
**optional external power supply can be ordered if the SOURCE current from the USB-DIO-32 is expected to be greater than 420mA (80mA + 420mA = ~500mA)
Connector Pin Assignments
USB-DIO-32 has a 50-pin connector provided for I/O connections. Connector pin assignments are listed below.
Assignment Pin Assignment Pin Port C PC7 1 Counter A0 Freq In 2 Port C PC6 3 Ctr A1 P.W.I. (Gate) 4 Port C PC5 5 Counter A2 Freq Out 6 Port C PC4 7 Counter B0 Freq In 8 Port C PC3 9 Ctr B1 P.W.I. (Gate) 10 Port C PC2 11 Counter B2 Freq Out 12 Port C PC1 13 Counter C0 Freq In 14 Port C PC0 15 Ctr C1 P.W.I. (Gate) 16 Port B PB7 17 Ctr C2 Freq Out 18 Port B PB6 19 Port D PD7 20 Port B PB5 21 Port D PD6 22 Port B PB4 23 Ground 24 Port B PB3 25 Port D PD5 26 Port B PB2 27 Ground 28 Port B PB1 29 Port D PD4 30 Port B PB0 31 Ground 32 Port A PA7 33 Port D PD3 34 Port A PA6 35 Ground 36 Port A PA5 37 Port D PD2 38 Port A PA4 39 Ground 40 Port A PA3 41 Port D PD1 42 Port A PA2 43 Ground 44 Port A PA1 45 Port D PD0 46 Port A PA0 47 Ground 48 Fused +5 VDC . 49 Ground 50
If you need accessory information for this product, please use our Online Contact Us Form , our industrial sales team is here to help you find the accessories.
WARNING:: The plastic used in cable products can expose you to lead and lead components,
chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
For more information go to www.P65Warnings.ca.gov
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