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CIO-DIO48 $89
48 Channel Digital Input-Output Cards for IBM Compatibles

CIO-DIO48 48 Channel Digital Input Output Cards

The CIO-DIO48 can control 48 devices or sense 48 contact closures from a single half-size card in a pc. The CIO-DIO48 employs two 8255 parallel peripheral interface chips which are programmable in three modes; simple byte input or output or strobed I/O. The 8255 is simple to program. The CIO-DIO48 can provide 2.5 mA to activate other chips, but not enough for LED's or relays. The CIO-DIO48H can source 15 mA or source 64 mA, enough for switching most relays and SSR's.

Each 8255 has 24 I/O lines. The chip is configured as three ports. Two ports, A & B, are 8-bits wide, while port C may be an 8-bit port or two 4-bit ports. Individual ports may be configured as input or output, and are written to or read from as a unit.

The CIO-DIO48 is a member of a family of digital I/O boards which use a 50-pin connector. Applications can easily be sized from 48 to 192 digital I/O points or more. Software is extensible to multiple points and all the accessories, including screw terminal boards, electro-mechanical relay boards and solid state relay boards interface to the same connector, regardless of which digital I/O board is used.

Programming The I/O register map shows how many addresses and their functions for the board. Optional software drivers, called UNIV-DRVR, are available for programming in both DOS, Windows 3.1 & Windows 95. DOS support includes QuickBasic 4.5, Visual Basic, Turbo C, Visual C++, Microsoft C and Quick C. Windows support includes Microsoft C, Visual C++, Visual Basic, Borland C, and C++. Labview drivers are also available. (requires UNIV-DRVR)

The CIO-MINI50 provides 50 12 to 22 AWG screw terminals. The CIO-SPADE50 provides terminals for 50 spade type connections.The SSR-RACK24 mounts 24 solid state relays, and the CIO-ERB24 mounts 24 electro-mechanical relays.

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