Advantech PCLS-848-P, User Manual

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2 PCLS-848-P User's Manual
* Built-in 16 bit digital output port provides a convenient and economical solution for
signal switching and digital control applications. The D/O port is compatible with
the daughter boards: PCLD-785 Relay Output Board, PCLD-786 SSR & Relay
Driver Board and PCL-789 Amplifier & Multiplexer Board.
* The software can change the PC printer port to an IEEE-488 device. The PrtSc
(print screen) key, all print statements, word processing and spreadsheet programs
that use printer driver in BIOS can use IEEE-488 printers.
* High speed direct memory access (DMA) with the ability to handle 64K byte
arrays.
* Programmable system controller, active controller or device functions.
* All device functions, addresses, interrupt conditions, and parallel poll responses are
programmable.
* DIP switch selectable wait states (0/2/4/6 wait states) to ensure the compatibility to
very high speed PC’s.
* PCL-848A offers the connectors of the IEEE-488 standard while PCL-848B uses
the 25 pin D type connectors for the IEC-625 standard.
* Each device on the IEEE-488 bus can be assigned with its own terminator.
1.2. Description of the Documentation
Information in this manual is given at several levels of detail and is organized to allow
you work through the TUTORIAL, PROGRAMM ING REFERENCE and PRO-
GRAMMINGEXAMPLES chapters.
If you have no IEEE-488 experience, go to Chapter 9 after this chapter. The IEEE-488
TUTORLAL in Chapter 9 is designed to give you a thorough understanding of how
the IEEE-488 General Purpose Interface Bus (GP-IB) works. Topics in the TUTORI-
AL should be read in sequence if you have no IEEE-488 background and intend to
write application programs. With a solid understanding of the basic IEEE-488
concepts, followed by returning to the PROGRAMMING REFERENCE, and the
PROGRAMMINGEXAMPLES, you should be able to program almost any IEEE-
488 bus system without interface problems.