Contec CNT24-4 User Manual

CNT24-4(PCI)

24Bit Up/Down Counter Board for PCI

User’s Guide

Copyright

Copyright 1997 CONTEC Co., LTD. ALL RIGHTS RESERVED
No part of this document may be copied or reproduced in any form

by any means without prior written consent of CONTEC Co., LTD.

CONTEC Co., LTD. makes no commitment to update or keep
current the information contained in this document. The
information in this document is subject to change without notice.

All relevant issues have been considered in the preparation of this
document. Should you notice an omission or any questionable
item in this document, please feel free to notify CONTEC Co.,
LTD.

Regardless of the foregoing statement, CONTEC assumes no
responsibility for any errors that may appear in this document nor
for results obtained by the user as a result of using this product.

Trademarks

MS, Microsoft, MS-DOS and Windows are trademarks of Microsoft
Corporation. Other brand and product names are trademarks of
their respective holder.

CNT24-4(PCI)

i

Product Configuration

- CNT24-4(PCI) Board…1

- CNT24-4(PCI) Setup Disk (3.5inch/1.44MB)…1

- User's Guide (this Booklet)…1

Unpacking:

This card is specially packed in an anti-static bag to prevent damage
in shipping.

Check the contents to make sure that you have everything listed
above. If you do not have all the items, contact your distributor
or CONTEC group office where you purchased.

Note!

Do not remove the board from its protective packaging until the
computer case is open and ready for installation. Electrical static
can cause damage to electrical components.

ii

CNT24-4(PCI)

Table of Contents

Copyright........................................................................... i

Trademarks........................................................................ i

Product Configuration......................................................ii

1. Introduction............................................................. 1

Features.........................................................................1

Limited Three-Year Warranty......................................2

How to Obtain Service..................................................2

Liability .........................................................................2

About the Manual .........................................................3

2. Setup....................................................................... 5

Component Locations....................................................... 5

Setting the Board ID........................................................ 6

Setting procedure..........................................................6

Setting the Interrupt Use................................................ 7

Setting up the Board

(For Use under MS-DOS or Windows 3.1)...................... 8

Procedure.......................................................................8

Checking resources.......................................................8

Obtaining resource information...................................9

Sample programs for MS-DOS.....................................9

Sample's Specification ................................................10

Setting up the Board (for Use under Windows 95)....... 14

Checking the OS version ............................................14

Procedure for use under Windows 95

version 4.00.950 or 4.00.950a.....................................15

Procedure for use under Windows 95

version 4.00.950B........................................................15

Method of installing two or more CNT24-4(PCI)

boards (for use under Windows 95 version 4.00.950

or 4.00.950a)................................................................16

Method of installing two or more CNT24-4(PCI)

boards

(for use under Windows 95 version 4.00.950B) .........18

Checking resources.....................................................19

CNT24-4(PCI)

iii

Support software.........................................................20

Setting up the Board (for Use under Windows NT) ..... 21

Procedure.....................................................................21

Checking resources.....................................................22

Support software.........................................................22

3. External Connection ................................................ 23

Connecting the Interface Connector..........................23

Connector........................................................................ 24

Optional Cable DT/B2.................................................26

External Connection ...................................................... 27

Output Circuit and Connecting Example..................29

Connecting Rotary Encoder........................................... 30

Measures Against Voltages............................................ 31

4. I/O Ports and Registers............................................ 33

I/O Port Bit Assignment................................................. 33

Data Setting ................................................................33

Count Value Flow........................................................34

Operation Command...................................................35

Output Command........................................................... 37

Count initial value

(Commands; CH0:00h, CH1:05h, CH2:0Ah, CH3:0Fh)

......................................................................................37

Operation Mode

(Command CH0:01h, CH1:06h, CH2:0Bh, CH3:10h)

......................................................................................37

Counter Operation Mode ............................................... 40

2-phase input...............................................................40

Single-phase input......................................................40

Single-phase input with gate control.........................41

Synchronization clear.................................................42

Asynchronization clear...............................................42

Count input multiplication.........................................43

Z-phase/CLR input

(Command CH0:02h, CH1:07h, CH2:0Ch, CH3:11h)

......................................................................................44

iv

CNT24-4(PCI)

Comparison register

(Command CH0:03h, CH1:08h, CH2:0Dh, CH3:12h)

......................................................................................45

Digital filter

(Command CH0:04h, CH1:09h, CH2:0Eh, CH3:13h)

......................................................................................46

Latch Count value (Command 14h)...........................48

Interrupt mask (Command 15h)................................48

Sense Reset (Command 16h)......................................49

Programmable time

(Command timer data:17h, Timer start:18h)............50

Timer interrupt frequency..........................................51

One-shot pulse (Command 19h).................................52

Input Command ............................................................. 53

Read count value

(Command CH0:00h, CH1:05h, CH2:0Ah, CH3:0Fh)

......................................................................................53

Status data

(Command CH0:01h, CH1:06h, CH2:0Bh, CH3:10h)

......................................................................................54

Interrupt mask (Command 15h)................................56

Sense port (Command 16h) ........................................56

Default Setting............................................................57

5. System Reference .................................................... 59

Specifications.................................................................. 59

Block Diagram................................................................ 60

6. Troubleshooting....................................................... 61

QUESTIONS: ................................................................. 61

Is the pilot light on?....................................................61

Did the system boot up?..............................................61

Does your program work?...........................................61

Does the sample program work?................................61

Is the input data accurate? .........................................62

Still have a problem? ..................................................62

7. Index......................................................................65

CNT24-4(PCI)

v

List of Figures

Figure 2.1. Component Locations ...............................................5

Figure 2.2. Board ID Settings (SW1) ..........................................6

Figure 2.3. Setting the Interrupt Use ...........................................7

Figure 2.4. Sample Programs on FD............................................ 9

Figure 2.5. CRT Display (CNTPCI01.C)...................................11

Figure 2.6. Flowchart (CNTPCI01.C) .......................................11

Figure 2.7. CRT Display (CNTPCI02.C)...................................12

Figure 2.8. CRT Display (CNTPCI03.C)...................................12

Figure 2.9. Flowcharts (CNTPCI03.C)...................................... 13

Figure 3.1. Connecting the Interface Connector........................23

Figure 3.2. CN1 Connector as Viewed from Back of Computer

................................................................................ 24

Figure 3.3. CN1 Pin Assignments.............................................24

Figure 3.4. CN2 Frontal View...................................................25

Figure 3.5. CN2 Pin Assignments.............................................25

Figure 3.6. Optional Cable DT/B2 ............................................26

Figure 3.7. 37-Pin D-Type Connector Pin Assignments............26

Figure 3.8. Digital Input............................................................ 27

Figure 3.9. Connecting to Open-collector Output Device..........27

Figure 3.10. TTL-Level Input Circuitry...................................... 28

Figure 3.11. Output Circuit and Connecting Example .................29

Figure 3.12. Photocoupler Input..................................................30

Figure 3.13. TTL Input ...............................................................30

Figure 3.14. Samples of Surge Voltage Protection.......................31

Figure 4.1. Output port ..............................................................33

vi

CNT24-4(PCI)

Figure 4.2. Input port................................................................ 33

Figure 4.3. Count Value Flow....................................................34

Figure 4.4. Counting Example with 2-phase Input .................... 40

Figure 4.5. Single-phase Counting Example..............................40

Figure 4.6. Example of Single-phase Input with Gate Control... 41

Figure 4.7. Example of Synchronization Clear..........................42

Figure 4.8. Example of Asynchronization Clear ........................42

Figure 4.9. Counting Example for Multiplied Count Inputs.......43

Figure 4.10. Number of Z-phase Inputs Available ZSE=0

(Positive Logic).......................................................44

Figure 4.11. Digital Filter ............................................................47

Figure 5.1. Block Diagram........................................................60

CNT24-4(PCI)

vii

List of Tables

Table 2.1. Sample's Specification ...............................................10

Table 4.1. Output Command ...................................................... 35

Table 4.2. Input Command.........................................................36

Table 4.3. Counter Operation Mode ...........................................38

Table 4.4. Switching Counting Direction.................................... 39

Table 4.5. Z-phase Input Mode...................................................44

Table 4.6. Digital Filter Clock Data............................................ 47

Table 4.7. Relationship between programmable timer interrupt

................................................................................ 51

Table 4.8. Relationship Between One-shot Pulse Width Data

and Pulse Width......................................................52

Table 4.9. Default Setting...........................................................57

Table 5.1. Specifications ............................................................59

viii

CNT24-4(PCI)

1. Introduction

Thank you for purchasing the CNT24-4(PCI).
The CNT24-4(PCI) is the PCI bus compatible. This board is
plugged into a PCI bus expansion slot on the motherboard in the
personal computer or into a PCI bus unit. You should read this
manual carefully to construct your system with the board by
creating its application programs and connecting the required
external devices to the board.

Features

- One board enables 24 bit up/down counts for four channels.

- Counts two phase signals from devices like a rotary encoder or a
linear gauge.

- Photocoupler insulated input or TTL level input for each channel.

- Generates interrupts or outputs signals by matching the count
value of each channel with the value set by the user.

- Periodically generates an interrupt using an internal
programmable timer.

- Each channel has a general input signal (including photocoupler
and TTL input).

Introduction

CNT24-4(PCI)

1

Introduction

Limited Three-Year Warranty

CONTEC Interface boards are warranted by CONTEC Co., LTD. to
be free from defects in material and workmanship for up to three
years from the date of purchase by the original purchaser.

Repair will be free of charge only when this device is returned
freight prepaid with a copy of the original invoice and a Return
Merchandise Authorization to the distributor or the CONTEC group
office, from which it was purchased.

This warranty is not applicable for scratches or normal wear, but
only for the electronic circuitry and original boards. The warranty
is not applicable if the device has been tampered with or damaged
through abuse, mistreatment, neglect, or unreasonable use, or if the
original invoice is not included, in which case repairs will be
considered beyond the warranty policy.

How to Obtain Service

For replacement or repair, return the device freight prepaid, with a
copy of the original invoice. Please obtain a Return Merchandise
Authorization Number (RMA) from the CONTEC group office
where you purchased before returning any product.

2

* No product will be accepted by CONTEC group without the

RMA number.

Liability

The obligation of the warrantor is solely to repair or replace the
product. In no event will the warrantor be liable for any incidental
or consequential damages due to such defect or consequences that
arise from inexperienced usage, misuse, or malfunction of this
device.

CNT24-4(PCI)

About the Manual

This manual consists of the following chapters:
Chapter 1 Introduction
Chapter 2 Setup

This chapter describes the procedures for setting up
the CNT24-4(PCI) board and setting its switches.

Chapter 3 Connecting the External Devices

This chapter explains how to connect external devices
to the board and gives notes on connecting them.

Chapter 4 I/O Ports and Registers

This chapter provides the assignment and definitions
of each I/O port bit used the board.

Chapter 5 Specifications

This chapter summarizes the hardware specifications
of the board and provides circuit block diagrams.

Chapter 6 Index

Introduction

CNT24-4(PCI)

3

Introduction

4

CNT24-4(PCI)

2. Setup

Component Locations

Figure 2.1. shows the names of major parts on the CNT24-4(PCI)
board.
Note that the switch setting shown below is the factory default.

• Interface connector
for TTL level input (CN2)

• Jumper for interrupt signal
resource settings

JP1
INT

USE

1 2 3

NOT USE

Setup

CNT24-4(PCI)

• Interface connector for
photocoupler resistance input
(CN1)

• BOARD ID Setting Switch

Figure 2.1. Component Locations

8

9

7

A

B

6

5

C

4

D

3

E

2

F

1

0

SW1

BOARD ID

JP1

BOARD ID

SW1

CNT24-4(PCI)

5

Setup

Setting the Board ID

If you install two or more CNT24-4(PCI) boards on one personal
computer, set their respective board IDs to distinguish them.
Assign a different value to each of the boards.

The board IDs from 0 to F can be set to identify up to sixteen
boards.

If only one board is used, the original factory setting (Board ID = 0)
should be used.

Setting procedure

To set the board ID, use the rotary switch on the board. Turn the
SW1 knob to set the board ID as shown below.

8

9

7

A

6

B

5

C

4

D

3

E

2

F

1

0

SW1

BOARD ID

( Same for match output :

BOARD ID = 0 )

Figure 2.2. Board ID Settings (SW1)

6

CNT24-4(PCI)

Setting the Interrupt Use

If you don't use the Interrupt function, to save the Interrupt
resources of PC, you can let recognize to the PC the CNT24-4(PCI)
as no-Interrupt function boards.

In case of interrupt use, this board is assigned the interrupt level
from PC.

Setup

Setup when interrupt is used

JP1
INT

USE

(Factory setting)

NOT USE

Setup when interrupt is not used

JP1
INT

USE

NOT USE

1 2 31 2 3

Figure 2.3. Setting the Interrupt Use

CNT24-4(PCI)

7

Setup

Setting up the Board

(For Use under MS-DOS or Windows 3.1)

The board setup method for the CNT24-4(PCI) is different
depending on each OS. Set up the board using the appropriate
method depending on the OS used. This section describes the
procedure and notes for using the board under MS-DOS or
Windows 3.1.

Procedure

(1) Set the board ID.
(2) Be sure to check that the personal computer is off, then plug

the board into a PCI bus slot in the personal computer.
(3) Turn the personal computer on to start up MS-DOS.
(4) Setting up the board is completed when MS-DOS gets and

running. When setting up the board has been completed,

be sure to check the assigned resources.

Checking resources

Before operating the CNT24-4(PCI) board, be sure to check the
personal computer resources (I/O addresses and interrupt level)
assigned to the board. For PCI compatible (Plug and Play
compliant) boards, free resources among the personal computer
resources are assigned automatically upon activation of the personal
computer. Follow the steps below to check the assigned resources.

(1) Run the resource check program "CNTPCI.EXE" stored in the

DOS directory on the supplied floppy disk (FD).
(2) Check the I/O addresses and interrupt level (IRQ) displayed on

the screen.
Once the CNT24-4(PCI) has been set up correctly, it can be used

under MS-DOS and Windows 3.1.

8

CNT24-4(PCI)

Obtaining resource information

You can get information on the personal computer resources
assigned to the CNT24-4(PCI) by accessing the PCI BIOS.
For the precise method, refer to the sample program stored in the
DOS directory on the supplied FD.

Sample programs for MS-DOS

The sample programs for using the CNT24-4(PCI) under MS-DOS
are written in Microsoft C.

Setup

DOS --- Samples --

DOS --- Samples --- 98 or PC ---

(1) CNTPCI.C Resource check program

CNTPCI.EXE

(2) CNTPCI01.C Count value of any Channel

CNTPCI01.EXE

(3) CNTPCI02.C 4 channel count value at the same time

CNTPCI02.EXE

(4) CNTPCI03.C Count value for every time period by timer interrupt

CNTPCI03.EXE

Figure 2.4. Sample Programs on FD

For details on I/O addresses, see Chapter 4 "I/O Ports and
Registers."

CNT24-4(PCI)

9

Setup

Sample's Specification

Table 2.1. Sample's Specification

Using channel 0ch 0ch - 3ch 0ch - 3ch
Operating mode *1 *1 *1
Input Z-phase/clear once in valid in valid
Digital filter 6.5µsec 100nsec *2 100nsec *2
Initial count value 0 0 0
Comparison count value 100 (64h) 100 (64h) 100 (64h)
One-shot pulse width
Timer value --- --- 1 second
Using connector CN1 CN1 CN1

*1 Set an operation mode Set an operation mode for input spcification.
Operation mode data example
8Ch : Photocoupler insulation, 2-phase input
9Bh : Photocoupler insulation, Single-phase input
8Bh : Photocoupler insulation, Gate control input
CCh : TTL level, 2-phase input
DBh : TTL level, Single-phase input
CBh : TTL level, Gate Control input
Other settings (Common) : Asynchronization clear, UP counting direction,
Z-phase positive logic, Single input multiplication.
The Sample program uses the 8C setting.
*2 In the CNTPCI02, CNTPCI03, the digital filter is not set and the default is 100nsec.
*3 To Output the signal to an external peripheral, CN1 must be connected.

Item Specification

CNTPCI01.C CNTPCI02.C CNTPCI03.C

104.4msec *3 --- ---

≠

10

Note!

Connect a signal appropriate for the input specification of an
external peripheral. To connect a rotary encoder, see Chapter 3.
"Connecting Rotary Encoder".

CNT24-4(PCI)

Setup

(1) Display count value of any channel (CNTPCI01.C)
This program displays the count value of the specified channel.

If the program is executed, the count value of the signal connected
to channel 0 is displayed.

The count comparison data is set at 100; matching with the count
value outputs the one-shot pulse to an external peripheral.

Pressing the ESC key terminates the program

CHANNEL DATA STATUS

CH0 0 7F

Figure 2.5. CRT Display (CNTPCI01.C)

START

Set I/O address

*********

Set channel

Initial setting

• Set operation mode

• Set Z-phase

• Set digital filter

• Reset sense bit

Set count data

(Lower)

(Middle)

(Upper)

Set count match data

(Lower)

(Middle)

(Upper)

1

1

Set one-shot

pulse width

Latch count value

Read count value

(Lower)
(Middle)
(Upper)

Calculate count value

Display
count value

Figure 2.6. Flowchart (CNTPCI01.C)

CNT24-4(PCI)

11

Setup

(2) Display 4 channel count values at the same time

(CNTPCI02.C)
This program displays the 4 channel count values at the same time.

When this program is executed, the signal count values (Decimal
and HEX) that are connected to channels 0 - 3 and their input status.

Pressing the ESC key terminates the program.

CHANNEL DATA STATUS

CH0 0 7F
CH1 0 7F000000
CH2 0 7F000000
CH3 0 7F000000

DATA(HEX)

000000

Figure 2.7. CRT Display (CNTPCI02.C)

(3) Display count value for every time period by timer interrupt

(CNTPCI03.C)
This program generates an interrupt every second using the timer

and displays the count value. If this program is executed, the
count values (HEX and decimal) of the signal that is connected to
channels 0 -3 are displayed. The interrupt level is IRQ5.

Pressing the ESC key terminates the program.

CHANNEL DATA

CH0 0
CH1 0000000
CH2 0000000
CH3 0000000

INTERRUPT COUNT 0TIME

DATA(HEX)

000000

12

Figure 2.8. CRT Display (CNTPCI03.C)

Note!

To terminate the program, press the ESC key. If the program is
terminated by another key, the interrupt routine is aborted and the
process stops.

CNT24-4(PCI)

Setup

START

Set segment

*********

base address

Set address

Initial setting

• Set operation mode

• Set Z-phase

• Reset sense bit

Set count data
(Lower)
(Middle)
(Upper)

Set count data
(Lower)
(Middle)
(Upper)

Interrupt process

Set IRQ5

1

1

Clear mask

Set timer data
(Lowest)
(Lower)
(Upper)
(Highest)

Start timer

Check sense port

Latch count value

Read count value

Calculate count value

Display
count value

Reset sense bit

N

END

Y

Set IMR

Stop timer

END

IRQ5

Save registar

*********

Input number of
timer count ups

Interrupt EQI process

Restore register

IRET

Figure 2.9. Flowcharts (CNTPCI03.C)

CNT24-4(PCI)

13

Setup

Setting up the Board

(for Use under Windows 95)

The board setup method for the CNT24-4(PCI) is different
depending on each OS. Set up the board using the appropriate
method depending on the OS used. This section describes the
procedure and notes for using the board under Windows 95.

Before the CNT24-4(PCI) can be used under Windows 95, have the
OS recognize the I/O addresses and interrupt level (IRQ) to be used
for the CNT24-4(PCI). Assigning the resources such as I/O
addresses and IRQ for a piece of hardware in Windows 95 is called
"installing the hardware." Use the appropriate procedure to install
the CNT24-4(PCI).

Checking the OS version

Note that the procedure for installing the CNT24-4(PCI) is different
depending on each version of Windows 95.

Check the version of Windows 95 on your system as follows before
installing the CNT24-4(PCI).

14

(1) Open [Control Panel] from [My Computer].
(2) Double-click on the [System] option to open the [System

Properties] property sheet.
(3) Check the "System:" number displayed on the [General] page.

System:

Microsoft Windows 95

4.00.950

The version numbers of Windows 95 include 4.00.950, 4.00,950a,
and 4.00.950B. The CNT24-4(PCI) setup method is different
depending on the version number of Windows 95.

CNT24-4(PCI)