Summary of Contents for SCIDYNE XIO-DI8
- Page 1 USER’S REFERENCE MANUAL XIO-DI8 External I/O - 8 Channel Digital Input Interface Model No. 100-7656 Doc. No. M7656 Rev: 06/20/06 649 School Street / Pembroke, MA 02359 USA / Tel: (781) 293-3059 www.scidyne.com...
- Page 2 Buyer. SCIDYNE and fitness for a particular purpose. does not warrant the Buyer’s circuitry or SCIDYNE shall not be liable for errors malfunctions of SCIDYNE products that LIFE SUPPORT POLICY contained herein or for incidental or result from the Buyer’s circuitry.
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Page 3: Table Of Contents
Using Multiple XIO-DI8 Boards ........ - Page 4 Terminology Host This is the computer or similar device which controls the XIO-DI8 operation. Logic conditions Unless otherwise noted, logic signals are designated as TRUE (Set) and FALSE (Clear). Names with an asterisk (*) postscript are inverted or active low. Unless otherwise noted TRUE is considered logic “1”...
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Page 5: Introduction
Introduction The XIO-DI8 is an eight channel digital input board which allows low level digital inputs, as found on Single-Board-Computers and similar devices, to monitor external AC and DC signals. It features eight opticaly coupled input channels offering 500 volt isolation. - Page 6 Component Identification Before the XIO-DI8 can be put into service it must be properly configured for the intended application. This is accomplished by placing shorting jumpers, setting switches, and installing input resistors located at various locations on the board. The component identification is shown in Figure 2. Each XIO-DI8 comes from the factory set with a default configuration.
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Page 7: Board Setup
Power Source Selection Jumper (J1) Power for the XIO-DI8 logic circuits can be derived from either the Host (controlling device) or an external supply. The selection is made by placing a shorting jumper at the appropriate location of jumper block J1. -
Page 8: Ac Input Filters
AC signal is applied. To overcome this condition the XIO-DI8 is equipped with a low-pass filter on each of the inputs. DIP switch SW1 is used to selectively enable a filter for each input. A switch in the “ON” or “CLOSED” position enables the filter for that particular digital input. -
Page 9: Configuring Input Voltage Ranges
Configuring Input Voltage Ranges All digital input channels of the XIO-DI8 have indentical circuitry as shown in figure 4. For each channel a single socketed resistor (Rin) is used to limit the input current. Its ohmic value is selected to allow a approximately 4.0ma of current flow when the input is driven at the desired input voltage. -
Page 10: Application Information
Application Information Host Connections The host attaches to the XIO-DI8 through one of two IDC ribbon headers, CON1 or CON2. The pinout for these headers conform to two common industry standards. Other connection arrangements, such as a 37-pin D-SUB, are easily accommodated using simple custom cable assemblies. -
Page 11: Specifications
Specifications General: Description: Eight channel optically-isolated digital input interface board Power: 5Vdc ±5% @ 125mA typical. Host or Externally supplied, “Power-On” LED Environmental: Operating temperature: -20º C to 70º C Non-condensing relative humidity: 5% to 95% Dimensions: 3.00" W x 9.500" L x 1.35" H ®... -
Page 12: Appendix A - Mechanical Dimensions
Appendix A - Mechanical Dimensions...
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