PC/104 ISOLATED INPUT/RELAY OUTPUT ■ 16 optically-isolated, non-polarized CMOS compatible ■ Economy version without COS feature digital inputs accept ±31VDC or AC rms ■ Input only and relay only versions ■ IRQ on input change of state (COS) eliminates the need for constant polling ■ Expanded input voltage levels ■ Slow/fast filter to accommodate AC voltages and noisy DC inputs ■ 16 Form C electro-mechanical relays switch up to 1A each The 104-IIRO-16 is a low cost 32-channel PC/104 utility board featuring 16 optically isolated digital inputs with change of state (COS) detection and 16 electromechanical Form C SPDT relay outputs. The isolated, non polarized inputs may be driven by either DC sources of 3-31V (or higher by special order) or AC sources at frequencies of 40Hz to 10KHz. Optically isolating the digital inputs from each other, and from the computer, assures smooth, error-free data transmission in noisy, real-world environments. The input channels are available via a 34-pin IDC type header. The 16 electromechanical relays are de-energized at system power-up to prevent an unintended control output signal. Data to the relays are latched. The relay contacts are available via a 50-pin IDC type header. Each input circuit includes a jumper selectable slow/fast filter to accommodate AC inputs and is also useful for slow DC inputs in noisy environments. The filter may be manually disabled to increase the board’s typical response time to 10µs when used with faster DC inputs. All input signals are rectified by diodes before input to the opto-isolators. Current limiting is provided by a 1.8K Ohm, 1/2-Watt resistor in series and accommodates a wide input range. The board is installed by jumper selecting the base address and IRQ. System interrupts are software controlled, enabling the board to generate an interrupt whenever one or more of the isolated digital inputs changes state. This eliminates the need for constant polling and greatly frees up system resources. Model 104-IIRO-16E is an economy version available without the interrupt Change of State Detection feature. Model 104-II-16 features 16 isolated digital inputs only and the 104RO-16 features 16 relay outputs only. S O F T WA R E The 104-IIRO-16 Series are supported for use in most operating systems and include a free DOS, Linux and Windows 95/98/Me/ NT/2000/XP/2003 compatible software package. This includes sample programs and source code in "C" and Pascal for DOS, and Visual Basic, Delphi, C++ Builder, and Visual C++ for Windows. Also included is a graphical setup program in Windows. Embedded OS support includes Windows XPe and CE. Linux support includes installation files and basic samples for programming from any user level via an open source kernel driver. ACCES I/O Products, Inc. 10623 Roselle Street San Diego, CA 92121 Tel: (858) 550-9559 (800) 326-1649 Fax: (858) 550-7322 Email: [email protected] Website:

PC/104 ISOLATED INPUT/RELAY OUTPUT Block Diagram & Pin Configuration Specifications Opt o-Isolat ed Inputs Electr omechanical Relay Outputs 16 non-polarized opto-isolated with change of state (COS) detection Input voltage Input impedance Independently selectable on a per-channel basis Response time 10µs without filter, 4.7ms with filter Contact life Operating time Release time Relay type Contact rating Contact type Single crossbar, Ag with Au clad (Bifurcated contacts optional) I/O is accessed via a 50-pin header for relays and 34pin header for inputs Power required Operating temperature 32-channel...