Omega MCIOCTR10HD User guide

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User's Guide

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CIO-CTR10HD CIO-CTR20HD

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EC Declaration of Conformity

Counter / Timer BoardsCIO-CTR10HD&20HD

DescriptionPart Number

to which this declaration relates, meets the essential requirements, is in conformity with, and CE marking has been applied according to the relevant EC Directives listed below using the relevant section of the following EC standards and other normative documents:

EU EMC Directive 89/336/EEC: Essential requirements relating to electromagnetic compatibility.

EU 55022 Class B: Limits and methods of measurements of radio interference characteristics of information technology equipment.

EN 50082-1: EC generic immunity requirements.

IEC 801-2: Electrostatic discharge requirements for industrial process measurement

and control equipment.

IEC 801-3: Radiated electromagnetic field requirements for industrial process measurements and control equipment.

QUICK START

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DETAILED INSTALLATION

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I/O CONNECTOR & PINOUT SOFTWARE CIO-CTR ARCHITECTURE

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SPECIFICATIONS

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ELECTRONICS AND INTERFACING

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1 1 INSTALLING INSTACALTM 2 RUNNING INSTACAL 4 4 BASE ADDRESS 5 INTERRUPT LEVEL SELECT 5 CLOCK SOURCE SELECT 5 INSTALLING THE CIO-CTR IN THE COMPUTER 6 7 8

8 CONTROL & DATA REGISTERS 10 BASE +400 & +401 11 11 POWER CONSUMPTION 11 COUNTER I/O 11 INTERRUPT INPUT 11 ENVIRONMENTAL 12 12 VOLTAGE DIVIDERS 13 LOW PASS FILTERS DE-BOUNCE INPUTS

IEC 801-4: Electrically fast transients for industrial process measurement and control equipment.

Carl Haapaoja, Director of Quality Assurance

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QUICK START

The CIO-CTR10HD and CIO-CTR20HD are easy to use. Here is the quick start procedure for those who know how to open the PC and install expansion boards, and want to dive right in. The CIO-CTR20HD is really a single board with two CIOCTR10HD's on it. For the balance of this manual we will refer to both boards as the CIO-CTRHD, and will only use the complete board name in instances where there are items specific to one board or the other.

This quick start procedure will help you quickly and easily setup, install and test your board. We assume you already know how to open the PC and install expansion boards. If you are unfamiliar or uncomfortable with board installation, please refer to your computer’s do cumentation. Tho ugh we recommend the use of InstaCal to guide you through your installation, detailed written instructions are provided in the next chapter.

We recommend you perform the software installation described in sections below prior to installing the board in your computer. The

InstaC

switches and jumpers on the board prior to physically installing the board in your computer.

operations below will show you how to properly set the

The key term in a low pass filter circuit is

quency

. The cut off fre-

cut off fre-

quency is that frequency above which no variation of voltage with respect to time may enter the circuit. For example, if a low pass filter had a cut off frequency of 30 Hz, the kind of interference associated with line voltage (60Hz) would be filtered out but a signal of 25Hz would be allowed to pass.

Also, in a digital circuit, a low pass filter might be used to de-bounce an input from a momentary contact button pushed by a person.

A low pass filter may be constructed from one resistor (R) and one capacitor (C). The cut off frequency is determined according to the formula:

Where Pi = 3.14...

Fc = 1 2 * Pi * R * C

INSTALLING INSTACALTM

Windows (in its various forms) and DOS users install the program by running the INSTALL.EXE program supplied on your InstaCal diskette (some releases of InstaCal will provide SETUP.EXE rather than Install.EXE. Use SETUP.EXE if it is included on your InstaCal disk). It will create all required folders/directories and unpack the various pieces of compressed software. Simply run install/setup and follow the onscreen instructions. Note where the installed files are placed, as you will need to access them in the next step (the default location is on your main hard drive in a directory or folder named C:\CB\).

R = 1 2 * Pi * C * F

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2 = 10K + 10K

10K

R1 = (A - 1) * R2

For example, if the signal varies between 0 and 20 volts and you wish to measure that with an input with a full scale range of 0 to 10 volts, the Attenuation is 2:1 or just 2. For a given attenuation, pick a handy resistor and call it R2, then use this formula to calculate R1.

RUNNING INSTACAL

To run InstaCalTM in the various forms of Windows, find the file named InstaCal.exe using your file management system and do ub le cli ck your mouse on i t. In DO S simply type instacal and press the Enter key.

Once running, InstaCal

provides four sub-menus (plus exit).

Digital inputs also make use of voltage dividers, for example, if you wish to measure a digital signal that is at 0 volts when off and 24 volts when on, you cannot connect that directly to the CIO-CTR digital inputs. The voltage must be dropped to 5 volts max when on. The Attenuation is 24:5 or 4.8. Use the equation above to find an appropriate R1 if R2 is 1K. Remember that a TTL input is 'on' when the input voltage is greater than 2.5 volts.

IMPORTANT NOTE

The resistors, R1 and R2, are going to dissipate all the power in the divider circuit according to the equation Current = Voltage / Resistance. The higher the value of the resistance (R1 + R2) the less power dissipated by the divider circuit. Here is a simple rule:

For Attenuation of 5:1 or less, no resistor should be less than 10K.

For Attenuation of greater than 5:1, no resistor should be less than 1K.

The CIO-TERMINAL has the circuitry on board to create custom voltage dividers. The CIO-TERMINAL is a 16" by 4" screw terminal board with two 37 pin D type connectors and 56 screw terminals (12 - 22 AWG). Designed for table top, wall or rack mounting, the board provides prototype, divider circuit, filter circuit and pull-up resistor positions which you may complete with the proper value components for your application.

1. Select Install (either highlight it and hit enter or double click your mouse on it).

2. Select Board #0 (select another number if Board #0 is already installed)

3. Select Board Type

4. Move through the sele ctions and highlight the particular bo ard you are installing (e.g. CIO-CTR10HD or CIO-CTR20HD). Double click on the board or hit enter.

5. The board’s default settings are then displayed. The board’s defaults are:

BASE ADDRESS: 300H (768 Decimal) Same as data sheet. If

address 300 is not available, choose another and InstaCal will show you the correct switch setting.

WAIT STATE: OFF.

6. You are now ready to install the board in your computer. Turn off your computer, unplug it from AC power, o pen your PC and i nstall the boar d in any unused ISA slot. After the board is installed and the computer is closed up, turn the power back on.

7. Run InstaCal

again, and at the main menu select Test.

a. Select the board you just installed

b. Select Internal Test

LOW PASS FILTERS DE-BOUNCE INPUTS

A low pass filter is placed on the signal wires between a signal and an A/D board. It stops frequencies greater than the cut off frequency from entering the A/D board's analog or digital inputs.

c. The internal control registers of the board will then be tested. If this test is successful, your board is installed correctly. If not, you likely have a base address conflict, or have the base address switch set incorrectly. Please refer to the next chapter for more information regarding selecting and setting the base address.

d. If the Internal Test is completed successfully, you may want to check that the I/O pins are working correctly. To check this select External Test and follow the instruction provided. This will

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require you to use the shorting wires supplied with the board to short inputs to outputs for I/O testing.

ELECTRONICS AND INTERFACING

VOLTAGE DIVIDERS

If you wish to measure a signal which varies over a range greater than the input range of a digital input, a voltage divider can drop the voltage of the input signal to the level the digital input can measure.

A voltage divider takes advantage of Ohm's law, which states,

Voltage = Current * Resistance

and Kirkoff's voltage law which states,

The sum of the voltage drops around a circuit will be equal to the voltage drop for the entire circuit.

Implied in the above is that any variation in the voltage drop for the circuit as a whole will have a proportional variation in all the

SIGNAL

HIGH

R1 V1

voltage drops in the circuit.

A voltage divide r takes ad vantage of the fact that the voltage across one of the resistors in a circuit is proportional to the voltage across the total resistance in the circuit.

The trick to using a voltage divider is to choose two resistors

SIGNAL

VOLTS

SIGNAL

LOW

SIMPLE VOLTAGE DIVIDER

V in

V2 V out

V in

V out

HIGH INPUT

LOW INPUT

R1 + R2

with the proper proportions relative to the full scale of the digital input and the maximum signal voltage.

The phenomena of dropping the voltage proportionally is often called attenuation. The formula for attenuation is:

Attenuation = R1 + R2

The varaiable Attenuation is the proportional difference between the signal voltage max and the full scale of the input.

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POWER CONSUMPTION

SPECIFICATIONS

DETAILED INSTALLATION

The CIO-CTRHD has o ne bank of switches, a base addr ess switch which must be set before installing the board in your computer. The InstaCal program included with the CIO-CTR will show how these switches are to be set and may be run before you install the board, or you may proceed from the information here.

+5V Supply

Additional power will be drawn by user's connections to the power

pins accessible on CIO-CTR connectors.

COUNTER I/O

INTERRUPT INPUT

ENVIRONMENTAL

10HD: 475mA typical, 590mA max 20HD: 825mA typical, 1AMP max None+12V Supply None-12V Supply

NOTE

0.4 V Max @ 3.2 mA9513 Output Low

2.4 V Min @ -200 uA9513 Output High

-0.5V Min, 0.8V Max9513 Input Low

2.2V Min, +5VMax9513 Input High

Positive Edge TriggeredType IRQ2 - IRQ7PC Bus IRQ Base +400Enable

0 - 50 Deg COperating Temperature

-20 to 70 Deg CStorage Temperature 0 to 90% Non-CondensingHumidity 5 Oz.Weight

BASE ADDRESS

Unless there is already a board in your system which uses address 300 HEX (768 Decimal) then you can leave the switches as they are set at the factory.

In the example shown here, the CIO-CTR is set for base address 300H (768 Decimal).

Certain address are used by the PC, others are free and may be used by the CIO-CTRHD and other expansion boards. We recommend BASE = 300H (768D) be tried first.

FUNCTIONHEX

EGA2C0-2CF8237 DMA #1000-00F EGA2D0-2DF8259 PIC #1020-021 GPIB (AT)2E0-2E78253 TIMER040-043 SERIAL PORT2E8-2EF8255 PPI (XT)060-063 SERIAL PORT2F8-2FF8742 CONTROLLER (AT)060-064 PROTOTYPE CARD300-30FCMOS RAM & NMI

PROTOTYPE CARD310-31FDMA PAGE REGISTERS080-08F HARD DISK (XT)320-31F8259 PIC #2 (AT)0A0-0AF PARALLEL PRINTER378-37FNMI MASK (XT)0A0-0A1 SDLC380-38F8237 #2 (AT)0C0-0DF SDLC3A0-3AF80287 NUMERIC CO-P

MDA3B0-3BBHARD DISK (AT)1F0-1FF PARALLEL PRINTER3BC-3BFGAME CONTROL200-20F EGA3C0-3CFEXPANSION UNIT (XT)210-21F

RANGE

070-071

0F0-0FF

FUNCTIONHEX

RANGE

MASK (AT)

(AT)

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RANGE

FUNCTIONHEX

RANGE

FUNCTIONHEX

BASE +400 & +401

SERIAL PORT3E8-3EFALT BUS MOUSE23C-23F FLOPPY DISK3F0-3F7PARALLEL PRINTER270-27F SERIAL PORT3F8-3FFEGA2B0-2BF

D0D1D2D3D4D5D6D7 L0L1L2CLK00CLK01CLK10CLK11WSEN

The CIO-CTRHD BASE switch may be set for address in the range of 000-3F8 so it should not be hard to find a free address area for your CIO-CTRHD. Once again, if you are not using IBM prototyping cards or some other board which occupies these addresses, then 300-31F HEX are free to use. Address not specifically listed, such as 390-39F, are usually free.

INTERRUPT LEVEL SELECT

A single interrupt input at pin 26 allows you to initiate an interrupt service routine with an external pulse. The interrupt level is selected via software and is one of the options set in the InstaCal configuration file.

CLOCK SOURCE SELECT

The source of the pulses supplied to the 9513 for timing operations is programmable and there are a number of options. These options are shown in the InstaCal INSTALL screen.

INSTALLING THE CIO-CTR IN THE COMPUTER

Turn the power off. Remove the cover of your computer. Please be careful not to dislodge any of the cables installed in your computer as you slide the cover off.

Locate an empty expansion slot in your computer.

Read - No read function for this register.

Write - L0, L1, and L2 select IRQ as follows:

IRQL0L1L2

N/A000 N/A100

2010 3110 4001 5101 6011 7111

CLK0# selects the clock cource for the 9513 designated “U1.” CLK1# selects the clock source for the 9513 designated “U2.”

CLOCK SOURCECLK#0CLK#1

1 MHz00 5 MHz10

External01

N/A11

WSEN enables or disables the wait state.

1 = Wait State Enabled

0 = Wait State Disabled

Push the board firmly down into the expansion bus connector. If it is not seated fully it may fail to work and could short circuit the PC bus power onto a PC bus signal. This could damage the motherboard in your PC as well as the CIO-CTRHD.

The CIO-CTRxxHD connector is a 50 pin header type connector. All the signals from the 9513 and interrupt are accessible. Pin one is designed by a square solder pad. It is the pin on the PC Bus end of the connector, and closest to the edge of the card.

Cables C50FF-2 and the CIO-MINI50 allow easy connection to all of the counter signals through 12 -22 AWG sc rew terminals. T he CIO-CT R20H D has two of these co nnectors, P1 and P2. The signals on each are identical.

NOTE: Base +400 applies to CTR10HD and the first ten channels of CTR20 HD. Base +401 applies to CTR20HD only and the second ten channels.

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To write to or read from a register in decimal or HEX, the following weights apply:

HEX VALUEDECIMAL VALUEBIT POSITION

110 221 442

883 10164 20325 40646 801287

To write control or data to a register, the individual bits must be set to 0 or 1 then combined to form a Byte. Data read from registers must be analyzed to determine which bits are on or off.

The method of programming required to set/read bits from bytes is beyond the scope of this manual. It will be covered in most Introduction To Programming books, available from a bookstore.

In summary form, the registers and their function are listed on the following table. Within each register are 8 bits which may constitute a byte of data or 8 individual bit functions.

WRITE FUNCTIONREAD FUNCTIONADDRESS

Data for 9513 #1Data from 9513 #1BASE +0 Commands to 9513 #1Status of 9513 #1BASE +1 Data for 9513 #2Data from 9513 #2BASE +2 Commands to 9513 #2Status of 9513 #2BASE +3

No read function.BASE +400

Wait State, Interrupt and Counter Source (1st ten channels)

CTR20 only

Data for 9513 #3Data from 9513 #3BASE +4 Commands to 9513 #3Status of 9513 #3BASE +5 Data for 9513 #4Data from 9513 #4BASE +6 Commands to 9513 #4Status of 9513 #4BASE +7

No read function.BASE +401

Wait State, Interrupt and Counter Source (2nd ten channels)

I/O CONNECTOR & PINOUT

The CIO-CTRxxHD use a 50-pin inline connector. The CIO-CTR10HD has only one connector while the CIO-CTR20HD has two. The connectors are compatible with the optional CFF50-series cables and CIO-MINI50 screw terminal adapter board. The pinout of these connectors is shown below.

GND

FOUT

GND

CTR OUT 5 CTR OUT 4 CTR OUT 3 CTR OUT 2 CTR OUT 1

GND

42 40

GND

38 36

GND

34 32

GND

30 28

IR INPUT

GND

FOUT

GND

20 18 16

GND

14 12

GND

6 4

GND

CIO-CTRxxHD CONNECTOR

49 47 45 43 41 39 37 35 33 31 29 27 25 23 21 19 17 15 13 11

9 7 5 3 1

+5V EXT SRC GATE 5 CLK IN 5 GATE 4 CLK IN 4 GATE 3 CLK IN 3 GATE 2 CLK IN 2 GATE 1 CLK IN 1 +5 V +5 V EXT SRC GATE 5 CLK IN 5 GATE 4 CLK IN 4 GATE 3 CLK IN 3 GATE 2 CLK IN 2 GATE 1 CLK IN 1

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SOFTWARE

CIO-CTR ARCHITECTURE

Each CIO-CTRHD boards is supp lied with the InstaCal installation, calibration and test package. Use it to guide the installation procedure. InstaCAL installation is described in chapter one (Quick Start).

The CIO-CTRHD family is fully supported by the powerful Universal Library package. Details regarding installation and usage of the Universal Library software can be found in the Universal Library documentation. Please note that InstaCal also creates a configuration file required for programmers who use the Universal Library programming libraries.

For those programmers writing drivers of their own, a complete register description follows.

CONTROL & DATA REGISTERS

The CIO-CTR10HD is composed of two AM9513 counter timer chips, the CIOCTR20HD is composed of four. Each 9513 contains five counters of 16 bits each. Associated with each counter are an input source, a count register, a load register, a hold register, an output and a gate. The 9513 is extremely flexible and this flexibility can make it a challenge to program the chip directly.

Unlike an Intel 8254 which has a single source, single gate and unique I/O address for each counter, the 9513 is fully programmable and any counter may be internally connected to any gate and receive it's counts from a number of sources. In addition, each counter does not have a unique I/O address. The 9513 takes only two address per chip, one of which is a data path to the counter's load and hold registers.

There is no 9513 register information in this manual. Those wishing to know more about the AM9513 and its programming should request the manual from our technical support group. As of this writing there is no charge for the manual.

We strongly suggest that you use t he Univer sal Lib rar y, rather than re sort to p rogr amming the 9513 directly. It is difficult to program and because programming support is available through the Universal Library, we cannot help with other 9513 programming

The CIO-CTR is an I/O mapped expansion board. The CIO-CTR20HD occupies 8 I/O addresses and the CIO-CTR10HD occupies 4 addresses.

The first address, or BASE ADDRESS, is determined by setting a bank of switches on the board.

Most of the functions that this board is capable of performing can be acheived using the Universal Library. Unless you have a good reason for direct register manipulation, we suggest you use the Universal Library.

The register descriptions follow the format:

01234567

A0A1A2A3A4A5A6A7

Where the numbers along the top row are the bit positions within the 8 bit byte and the numbers and symbols in the bottom row are the functions associated with that bit.