| 24-Bit Digital I/O Card Compact Size, Low Cost, Easy to Use!! |
Description
The ACL-7124 offers 24 programmable digital I/O channels on a compact card for the IBM PC/AT/XT and compatibles. These 24 channels emulate the operation of an 8255 Programmable Peripheral Interface (PPI) in mode 0. It can directly control Opto-22 compatible I/O racks and modules through a 50-pin ribbon connector.
The ACL-724 has 24-lines of digital inputs and outputs which are TTL compatible and use 74LS244 drive/buffer chips to provide high output drive. The chips also demand less current than regular TTL circuits. All of the I/O lines can sink up to 24mA, which provides a higher driving capacity than the 8255 chip.
With the interrupt control circuitry, an input channel PC0 from Port C of the 8255 PPI can generate an interrupt request. An on-board jumper (JP1) can be used to select interrupt IRQ2 through IRQ7. In addition, the interrupt capability of PC0 can also be enabled, programmed or disabled by a jumper. The output status can be read back directly from the corresponding output port. This allows monitoring the outputs via the software.
Software
Two software development kits are available for the ACL-7124.
An extensive library of functions are available that support Microsoft C and Borland C/C++. Example programs are included to demonstrate how to write C programs for the ACL-7124.
The ACLS-DLL1 is a high performance Windows driver for Digital I/O functions. It supplies a DLL that can be accessed from C, C++ and Visual Basic under Windows 3.x environment.
Specifications
- 24 TTL/DTL compatible digital I/O channels
- Emulates industry standard mode 0 of 8255 PPI
- Buffered outputs for high drive capability
- Directly interfaces with Opto-22 capability
- Programmable interrupt handling
- Output status readback
- Power Consumption +5 V @ 500 mA typical, 800 mA max.
- Register compatible with ACL-724 and PCL-724
Ordering Information
ACL-7124 : 24-Bit Digital I/O Card
ACLS-DLL1 : Optional
Software Utility/ACLS-DLL1 Windows 3.x Driver,
C-Library and Example Programs
TB-24R : 24 Relay Output Board
TB-16P8R : 16 Isolated Input & 8 Relay Outputs
TB-24P : 24 Isolated Inputs