Acces PCI-DIO-24D User Manual

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Manual PCI-DIO-24DH 10 Hardware Installation 1. Make sure to set switches and jumpers from either the Option Selection section of this manual or fro

Manual PCI-DIO-24DH 11 Chapter 3: Option Selection Refer to the setup programs on the CD provided with the card. Also, refer to the Block Diagram an

Manual PCI-DIO-24DH 12 3.9"4.8"IRQDINT EXTIRQTINTENINTSEL0TSTBEN Figure 3-1: Option Selection Map version D Figure 3-2: Option Selectio

Manual PCI-DIO-24DH 13 Chapter 4: Address Selection These cards use one address space and occupy sixteen I/O locations. The S03 (which has 3 counter

Manual PCI-DIO-24DH 14 Chapter 5: Software There are sample programs provided with the card in C, Pascal, QuickBASIC, and several Windows languages.

Manual PCI-DIO-24DH 15 Chapter 6: Programming These cards are I/O-mapped devices that are easily configured from any language and any language can e

Manual PCI-DIO-24DH 16 These cards use an 8255-5 PPI to provide a total of 24 bits input/output capability. The card is designed to use the PPI in Mod

Manual PCI-DIO-24DH 17 c. Now, if any of the ports are to be set as outputs, you may set the values to that port with the outputs still in the tris

Manual PCI-DIO-24DH 18 Programming Example (C) The following program fragment in C language illustrates the foregoing: const BASE_ADDRESS 0x300;

Manual PCI-DIO-24DH 19 Enabling/Disabling I/O Buffers When using the tristate mode (Jumper in the TST position), the method to disable the I/O buffe

Manual PCI-DIO-24DH 2 Notice The information in this document is provided for reference only. ACCES does not assume any liability arisin

Manual PCI-DIO-24DH 20 Chapter 7: 8254 Counter/Timer These cards have the option of one, two, or three 82C54 counter(s) that each include three 16-b

Manual PCI-DIO-24DH 21 Counter/Timer Registers Base + 10 Write/Read: Counter#A0 When writing, this register is used to load a count value into the

Manual PCI-DIO-24DH 22 Programming the 8254 The counters are programmed by writing a control byte into the counter control register. Refer to the prev

Manual PCI-DIO-24DH 23 Reading and Loading the Counters If you attempt to read the counters on the fly when there is a high input frequency, you will

Manual PCI-DIO-24DH 24 1st Read: Status byte 2nd Read: Low byte of latched data 3rd Read: High byte of latched data After any latching op

Manual PCI-DIO-24DH 25 Pulse Width The Pulse Width function will measure the width of an applied event from its rise to its fall (effectively one hal

Manual PCI-DIO-24DH 26 Chapter 8: Connector Pin Assignments The H card has a 50-pin connector provided on the back plate of these cards for I/O conn

Manual PCI-DIO-24DH 27 The D card has a 37-pin Male D-sub connector provided on the back plate of these cards for I/O connections. If all three coun

Manual PCI-DIO-24DH 28 Customer Comments If you experience any problems with this manual or just want to give us some feedback, please email us at:

Manual PCI-DIO-24DH 3 Warranty Prior to shipment, ACCES equipment is thoroughly inspected and tested to applicable specifications. However, should eq

Manual PCI-DIO-24DH 4 Table of Contents Chapter 1: Introduction ...

Manual PCI-DIO-24DH 5 Chapter 1: Introduction Features • 24 Bits of Digital Input/Output. • All 24 I/O Lines Buffered on the Card. • I/O Bu

Manual PCI-DIO-24DH 6 I/O wiring connections for the H card are via a 50-pin connector on the back plate of the card. Flat insulation-displacement rib

Manual PCI-DIO-24DH 7 Specifications Digital Inputs (TTL Compatible) • Logic High: 2.0 to 5.0 VDC • Logic Low: -0.5 to +0.8 VDC • Lo

Manual PCI-DIO-24DH 8 Figure 1-1: Card D or H Block Diagram

Manual PCI-DIO-24DH 9 Chapter 2: Installation A printed Quick-Start Guide (QSG) is packed with the card for your convenience. If you’ve already perf