Product Datasheet

This product is RoHS-compliant

Please contact us if you require a non-RoHS version.

Please note, Acces I/O products are often available in an array of different options, of which only a selection will be displayed here. Please contact us for pricing if you require a product option that is not shown on our website.

24-Channel Digital I/O with Digital Integration Features on M.2 The M.2-DIO-24X is an M.2 card, and optional cable assembly (D-Sub 37-pin Male connector) designed to be easily panel-mounted in any application environment. It uses the high speed PCI Express bus to transfer digital data to and from the card. The digital I/O is compatible with 8255 PPI chips making it easy to program. This also allows for simple and trouble-free migration from other ACCES PCI and PCI Express digital I/O cards, but also provides for advanced features enabled by the onboard FPGA logic. The card provides three 8-bit I/O ports designated A, B and C. Port C can be further divided into two 4-bit nybbles. Each port can be programmed as inputs or outputs. Change of State (COS) detection and interrupt capabilities are designed to relieve software from polling routines that can consume valuable processing time. Each port can be programmed for detecting state changes on their lines, in which any changes of the enabled port’s bits (low-to-high or high-to-low) will generate an IRQ. An ISR (interrupt service routine) then determines which bit changed state and clears the interrupt. Digital?Features Digital?Features (read as “Digital Integration Features”) are a new family of features available for applicable models of ACCES’ PCI Express (PCIe), M.2, and PCI Express Mini Card (mPCIe) Digital I/O product lines. All the cards share features such as memory mapped registers for low-latency operation. Output channels support pulse/train / PWM / frequency generation. Inputs channels support flexible measurement of pulse duration, frequency, and event counting, with optional debouncing, IRQ generation, and more. Applications The M.2-DIO-24X is excellent for use in applications sensing inputs such as switch closures, TTL, LVTTL, CMOS logic and controlling external relays, driving indicator lights, and more. The M.2-DIO-24X can be used in the following markets.

• Process Monitoring
• Manufacturing/Production Test
• Machine Control
• Monitoring and Control
• Security Systems, Energy Management
• Industrial Automation
• Factory Automation
• Laboratory Automation
• Embedded OEM

ACCESSORIES

Available accessories include a 40-pin to male DB-37 cable and screw terminal boards for quick and easy connectivity. I/O on the card is accessed via a 40-pin latching Molex connector. Alternately, custom hardware cables and/or interfaces can be produced to fit your specific application requirement.

SOFTWARE

The card is supported for use in most operating systems and includes a free DOS, Linux , and Windows 7/8/10/11 compatible software package (With limited support for Windows 2000/XP/2003/Vista). This package contains sample programs and source code in C#, Delphi, and Visual C++ for Windows. Also provided is a graphical setup program in Windows. Linux support includes installation files and basic samples for programming from user level via an open source kernel driver. Third party support includes a Windows standard DLL interface usable from the most popular application programs, and includes LabVIEW VIs. Embedded OS support includes Windows XPe, WES7, WES8, vxWorks, etc. Full register-level documentation of all features ensures easy integration in any application environment.

PC Interface

• M.2 Card

Digital Input / Output Interface

• Digital Bits: 24
• Compatibility: 8255 Mode 0
• Performance: 1 ?s per 32-bit transaction max, ?3.5?s in Windows

Digital Inputs

• Logic High: 2.0V to VCCIO (3.3VDC, 5VDC tolerant)
• Logic Low 0V to 0.8V

Digital Outputs (Standard Version)

• Logic High: 2.0V (min) 24mA source
• Logic Low: 0.55V (max) 24mA sink
• Power Output: +3.3 VDC via 0.5A polyfuse (resetting)
• TTL with user VCCIO Digital Outputs (-TTL option)
• 1.65V to 5.5V: At DB37M, via polyfuse
• Logic High: 3.8V (min) 32ma UVCCIO = 4.5V
• Logic Low: 0.55V (max) 32ma UVCCIO = 4.5V

This product is designed to be in full compliance with CE requirements.