CIO-PDISO8
Isolated Input and Relay Output
User's Guide

Document Revision 7A, March, 2010
© Copyright 2010, Measurement Computing Corporation

Trademark and Copyright Information
Measurement Computing Corporation, InstaCal, Universal Library, and the Measurement Computing logo areeither trademarks or registered trademarks of Measurement Computing Corporation. Refer to the Copyrights &Trademarks section on mccdaq.com/legal for more information about Measurement Computing trademarks.
Other product and company names mentioned herein are trademarks or trade names of their respective
companies.
© 2010 Measurement Computing Corporation. All rights reserved. No part of this publication may be
reproduced, stored in a retrieval system, or transmitted, in any form by any means, electronic, mechanical, by
photocopying, recording, or otherwise without the prior written permission of Measurement Computing
Corporation.
NoticeMeasurement Computing Corporation does not authorize any Measurement Computing Corporation product for
use in life support systems and/or devices without prior written consent from Measurement Computing
Corporation. Life support devices/systems are devices or systems that, a) are intended for surgical implantation
into the body, or b) support or sustain life and whose failure to perform can be reasonably expected to result ininjury. Measurement Computing Corporation products are not designed with the components required, and are
not subject to the testing required to ensure a level of reliability suitable for the treatment and diagnosis ofpeople.

HM CIO-PDISO8.doc

2

3

Table of Contents
Preface

About this User's Guide .......................................................................................................................5
What you will learn from this user's guide ......................................................................................................... 5
Conventions in this user's guide ......................................................................................................................... 5
Where to find more information ......................................................................................................................... 5
Chapter 1

Introducing the CIO-PDISO8 ................................................................................................................6
Overview: CIO-PDISO8 features ....................................................................................................................... 6
Software features ................................................................................................................................................ 6
Chapter 2

Installing the CIO-PDISO8 ....................................................................................................................7
What comes with your CIO-PDISO8 shipment? ................................................................................................ 7
Hardware .......................................................................................................................................................................... 7
Additional documentation ................................................................................................................................................. 7
Optional components ........................................................................................................................................................ 7

Unpacking the board ........................................................................................................................................... 8
Installing the software ........................................................................................................................................ 8
Configuring the CIO-PDISO8 ............................................................................................................................ 8
Base address...................................................................................................................................................................... 9
Wait state jumper .............................................................................................................................................................10
AC input filter ..................................................................................................................................................................10

Installing the CIO-PDISO8............................................................................................................................... 10
Connecting the board for I/O operations .......................................................................................................... 11
Connectors, cables – main I/O connector.........................................................................................................................11
Field wiring and signal termination accessories...............................................................................................................12
Chapter 3

Functional Details ...............................................................................................................................13
Relay outputs .................................................................................................................................................... 13
Form C relays ..................................................................................................................................................................13
Form A relays ..................................................................................................................................................................13

Isolated inputs ................................................................................................................................................... 14
Extending the input range ................................................................................................................................................14
Chapter 4

Specifications ......................................................................................................................................15
Relay specifications .......................................................................................................................................... 15
Isolated inputs ................................................................................................................................................... 15Power consumption .......................................................................................................................................... 15
Environmental .................................................................................................................................................. 16
Main connector and pin out .............................................................................................................................. 16
Declaration of Conformity ..................................................................................................................174

Preface

About this User's Guide
What you will learn from this user's guideThis user's guide explains how to install, configure, and use the CIO-PDISO8 so that you get the most out of its
digital input and relay output features.
This user's guide also refers you to related documents available on our web site, and to technical support
resources.

Conventions in this user's guide
For more information on …
Text presented in a box signifies additional information and helpful hints related to the subject matter you arereading.
Caution! Shaded caution statements present information to help you avoid injuring yourself and others,
damaging your hardware, or losing your data.
< : >Angle brackets that enclose numbers separated by a colon signify a range of numbers, such as those assigned
to registers, bit settings, etc.

bold text

Bold text is used for the names of objects on the screen, such as buttons, text boxes, and check boxes. For
example:1. Insert the disk or CD and click the OK button.

italic text

Italic text is used for the names of manuals and help topic titles, and to emphasize a word or phrase. For
example:■ The software installation procedure is explained in the Quick Start Guide.
■ Never touch the exposed pins or circuit connections on the board.

Where to find more information
For additional information relevant to the operation of your hardware, refer to the Documents subdirectory
where you installed the MCC DAQ software (C:\Program Files\Measurement Computing\DAQ by default), or
search for your device on our website at www.mccdaq.com.

5Chapter 1

Introducing the CIO-PDISO8
Overview: CIO-PDISO8 features
The CIO-PDISO8 is an eight channel-isolated high voltage digital input and eight relay output interface board.
You can use the CIO-PDISO8 for control and sensing applications where high voltages need to be sensed orcontrolled.
Caution! High voltages are present on the CIO-PDISO8 when you have connected high voltage inputs or
outputs to the CIO-PDISO8 connector. Use extreme caution! Never handle the CIO-PDISO8 when
signals are connected to the board through the connector.
Never remove the protective plates from the CIO-PDISO8.
The eight inputs are optically-isolated (500 V) inputs that can be read back as a single byte. The inputs are notpolarity sensitive, and may be driven by either AC (50 - 1000 Hz) or DC. Each input has a switchable low-passfilter with a time constant of 5 ms (200 Hz).
Outputs are from eight electromechanical relays. Five relays have FORM C connections, and three relays
provide normally-open FORM A connections. The relays are controlled by writing to an 8-bit port. The relay
control register can be read back from the same port.
Signal conditioning installed
The CIO-PDISO8 is a combination digital I/O board with signal conditioning installed. Most accessory boards
provide signal conditioning or easy-to-access signal termination. The CIO-PDISO8 does not require additionalsignal conditioning.
Caution! We recommend NOT using screw terminal boards with the CIO-PDISO8. The CIO-PDISO8 is
intended to sense and control high voltages. If you use a screw terminal board, you will expose
yourself and others to those high voltage signals. We recommend that you construct a safe cable tocarry your signals directly from your equipment to the CIO-PDISO8 connector.

Software features
For information on the features of InstaCal and the other software included with your CIO-PDISO8, refer to the
Quick Start Guide that shipped with your device.

6

Chapter 2

Installing the CIO-PDISO8
What comes with your CIO-PDISO8 shipment?
The following items are shipped with the CIO-PDISO8.

Hardware

CIO-PDISO8 board. The CIO-PDISO8 is shipped with a protective plate covering some components. The
board is shown here without the protective plate.

Additional documentation
For information on the features of InstaCal and the other software included with your CIO-PDISO8, refer to the
Quick Start Guide that shipped with your device. The Quick Start Guide is also available in PDF at
www.mccdaq.com/PDFs/manuals/DAQ-Software-Quick-Start.pdf.
Check www.mccdaq.com/download.htm for the latest software version.

Optional components


C37FF-x cable

Signal termination and conditioning accessories
MCC provides signal termination products for use with the CIO-PDISO8. Refer to Field wiring, signal
termination and conditioning on page 12 for a complete list of compatible accessory products.

7

CIO-PDISO8 User's Guide

Installing the CIO-PDISO8

Unpacking the board
As with any electronic device, you should take care while handling to avoid damage from static
electricity. Before removing the CIO-PDISO8 from its packaging, ground yourself using a wrist strap or bysimply touching the computer chassis or other grounded object to eliminate any stored static charge.
If any components are missing or damaged, notify Measurement Computing Corporation immediately byphone, fax, or e-mail:

Phone: 508-946-5100 and follow the instructions for reaching Tech Support.
Fax: 508-946-9500 to the attention of Tech Support
Email: techsupport@mccdaq.com

Installing the software
Refer to the Quick Start Guide for instructions on installing the software on the Measurement Computing
Data Acquisition Software CD. This booklet is available in PDF at www.mccdaq.com/PDFs/manuals/DAQSoftware-Quick-Start.pdf.

Configuring the CIO-PDISO8The CIO-PDISO8 has one base address switch, one input filter switch, and one wait state jumper which you
must set before installing the board in your computer . The InstaCal calibration and test program included with
the CIO-PDISO8 will show you how to set the switches. Run InstaCal before you open your computer andinstall the board. The CIO-PDISO8 is shipped with the factory-default settings listed below.
Factory-configured default settings
Switch/jumper

Default setting

Base address switches
Input Filter Select switches
Wait State jumper

300h (768 decimal)
OFF position

Figure 1. Switch and jumper locations

8

CIO-PDISO8 User's Guide

Installing the CIO-PDISO8

Base address
The base address switch sets the starting I/O location where the CPU can access the registers of the CIOPDISO8. The factory default is 300h (768 decimal).
Before you install the CIO-PDISO8 in your computer, set the base address by using the dip switch labeled
ADDRESS located on the board. The easiest way to set the base address switch is to let InstaCal show you thecorrect settings. However, if are already familiar with setting ISA base addresses, you may use the base address
switch description below to guide your base address selection.
Unless there is already another board in your system using address 300 hex (768 decimal), leave the switches as
they are set at the factory. The example shown in Figure 2 shows the settings for the factory-default baseaddress of 300 hex.

Figure 2. CIO-PDISO8 base address switches

In the default configuration shown in Figure 2, addresses 9 and 8 are DOWN, and all others are UP.
Address 9 = 200 hex (512 decimal) and address 8 = 100 hex (256 decimal); when added together they equal 300
hex (768 decimal).
Disregard the numbers printed on the switch
When setting the base address, refer to the numbers printed in white on the printed circuit board.
PC I/O addresses
Hex Range

Function

Hex Range

Function000-00F
020-021040-043060-063060-064070-071080-08F
0A0-0A1
0A0-0AF
0C0-0DF
0F0-0FF
1F0-1FF
200-20F
210-21F
238-23B
23C-23F
270-27F
2B0-2BF

8237 DMA #1
8259 PIC#1
8253 Timer
8255 PPI (XT)8742 Controller (AT)
CMOS RAM & NMI mask (AT)DMA page registers
8259 PIC #2 (AT)NMI mask (XT)8237 #2 (AT)80287 numeric CO-P (AT)Hard disk (AT)
Game control
Expansion unit (XT)Bus mouse
ALT bus mouse
Parallel printer
EGA

2C0-2CF
2D0-2DF
2E0-2E7
2E8-2EF
2F8-2FF
300-30F
310-31F
320-32F
378-37F
380-38F
3A0-3AF
3B0-3BB
3BC-3BB
3C0-3CF
3D0-3DF
3E8-3EF
3F0-3F7
3F8-3FFEGA
EGA
GPIB (AT)
Serial Port
Serial Port
Prototype card
Prototype card
Hard disk (XT)
Parallel printer
SDLC
SDLC
MDA
Parallel printer
EGA
CGA
Serial port
Floppy disk
Serial port

9

CIO-PDISO8 User's Guide

Installing the CIO-PDISO8

Wait state jumper
The CIO-PDISO8 board has a wait state jumper which you can set to enable an on-board wait state generator. A
wait state is an extra delay injected into the processor's clock via the bus. This delay slows down the processor
when the processor addresses the CIO-PDISO8 board so that signals from slow devices (chips) will be valid.
The factory default is wait state disabled (Off). You will probably never need the wait state because PC
expansion slot busses are limited to 8 or 10 MHz. If you get intermittent operation, try enabling the wait state tosee if that solves the problem.
O
F
F

O
N

Figure 3. Wait State jumper

AC input filter
The inputs are eight individual, optically isolated (500 V) inputs that can be read back as a single byte. The
inputs are not polarity sensitive, and may be driven by either AC (50 - 1000 Hz) or DC. Each input has aswitchable low-pass R-C filter having a time constant of 5 ms (200 Hz).
The switch which controls the input filters is shown in Figure 4. The filters must be used for AC inputs, andshould be used for DC inputs.
7 6 5 4 3 2 1 0
0NFigure 4. AC input filter switches

Unless you have reason to turn off a filter, you should enable it (switch up). With the filter on, an AC voltage
within the specified frequency range present on the input produces a constant high signal to the opto-isolator.

Installing the CIO-PDISO8
After you configure the board's switches and jumper, you can install the CIO-PDISO8 into your computer. To
install your board, follow the steps below.
Install the MCC DAQ software before you install your board
The driver needed to run your board is installed with the MCC DAQ software. Therefore, you need to install the
MCC DAQ software before you install your board. Refer to the Quick Start Guide for instructions on installingthe software.
1.

Turn your computer off, open it up, and insert your board into an available ISA slot.

2.

Close your computer and turn it on.

3.

To test your installation and configure your board, run the InstaCal utility you installed in the previous
section. Refer to the Quick Start Guide that came with your board www.mccdaq.com/PDFs/manuals/
DAQ-Software-Quick-Start.pdf for information on how to initially set up and load InstaCal.

10

CIO-PDISO8 User's Guide

Installing the CIO-PDISO8

Connecting the board for I/O operations
Connectors, cables – main I/O connector
The table below lists the board connectors, applicable cables and compatible accessory boards.
Board connectors, cables, accessory equipment
I/O connector typeCompatible cables
Compatible accessory products(with the C37FFS-x and C37FF-x cables)

37-pin D connector
C37FF-x, where x = length in feet
C37FFS-x, where x =5 or 10 feet
CIO-MINI37
SCB-37

Information on signal connections
General information regarding signal connection and configuration is available in the Guide to Signal Connections.
This document is available on our web site at www.mccdaq.com/Pdfs/DAQ-signal-connectiions.pdf.

Pin out – main I/O connector

Figure 5. Main I/O connector pin out

Caution! High voltages are present on the CIO-PDISO8 when you have connected high voltage inputs or
outputs to the CIO-PDISO8 connector. Use extreme caution! Never handle the CIO-PDISO8 when
signals are connected to the board through the connector.
Never remove the protective plates from the CIO-PDISO8.
11

CIO-PDISO8 User's Guide

Installing the CIO-PDISO8

Cabling

The red stripe
identifies pin # 1

1

1

20

20

37

37
19

19

Figure 6. C37FF-x cable

19

1

1

19

20

37

20

37

Figure 7. C37FFS-x cable

Field wiring and signal termination accessories
You can connect the CIO-PDISO8 to the following accessory boards using the C37FF-x cable.


CIO-MINI37 – 37-pin screw terminal board.
SCB-37 – 37-conductor, shielded signal connection/screw terminal box.

Details on these products are available on our web site at www.mccdaq.com/products/screw_terminal_bnc.aspx.
Caution! Do not use exposed-screw terminal boards if your field voltage is more than 24 volts. Using ascrew terminal board with high voltage inputs or outputs exposes you and others to those highvoltage signals. Construct a safe cable to carry your signals directly from your equipment to the
CIO-PDISO8 connector.
For additional information about digital interfacing
Detailed information regarding digital interfacing is contained in MCC's Guide to Signal Connections.
This document is available on our web site at www.mccdaq.com/pdfs/DAQ-Signal-Connections.pdf.

12Chapter 3

Functional Details
Relay outputs
Form C relays
The Form C relay has a common, normally open (NO) and normally closed (NC) contact. Figure 8 shows theschematic for a Form C relay, like those connected at relay 0 through relay 4.

Figure 8. Form C Relay (0) contacts

When 0 is written to the output, the common and NC are in contact.
When 1 is written to the output, the common and NO are in contact.

Form A relays
The Form A relay has a common and a normally open (NO) contact. Figure 9 shows the schematic for a Form A
relay, like those connected at relay 5 through relay 7.

Figure 9. Form A Relay (5) contacts

When 0 is written to the output, the common and NO are NOT in contact.
When 1 is written to the output, the common and NO are in contact.

The Form A and Form C relays on the CIO-PDISO8 board are the same type. Only the connections to the relay
poles differ.

13

CIO-PDISO8 User's Guide

Functional Details

Isolated inputs
The CIO-PDISO8 has eight isolated input channels. A schematic of a single channel is shown in Figure 10. The
signals are routed through a bridge rectifier so that the inputs are not polarity sensitive.

Figure 10. Isolated input schematic - simplified

Extending the input range
To extend the input range beyond the 5-28V specified, add an external resistor. Figure 11 shows the resistor andthe equations used to calculate resistor values for a given Vin.

Figure 11. Input range-extending resistor

For more information on digital signal connections
For more information on digital signal connections and digital I/O techniques, refer to the Guide to Signal
Connections. This document is available on our web site at available on our web site atwww.mccdaq.com/pdfs/DAQ-Signal-Connections.pdf).

14

Chapter 4

Specifications
All specifications are subject to change without notice.
Typical for 25°C unless otherwise specified.
Specifications in italic text are guaranteed by design.

Relay specifications
Table 1. Relay specifications
Number of relays
Contact configuration
Contact rating
Contact resistance
Coil resistance
Isolation
Operate time
Release time
Vibration
Shock
Insulation resistanceLife expectancy

8
5 Form C, SPDT (Relay 0 - 4)
3 Form A, SPST, Normally open (Relay 5 - 7)
7 A / 30 VDC or 10 A / 125 V AC
50 milliohms
70 ohms
Between open contacts:
750 VAC, 50/60 Hz, 1 min.
Between coil and contacts: 1500 VAC, 50/60 Hz, 1 min.
10 milliseconds max.
5 milliseconds max.
10 to 55 Hz (dual amplitude 1.5 mm)
10 G (11 milliseconds)
100 M ohms min. (500 V @ 1 minute)
Mechanical:
10 ^7 mechanical operations, min.
Electrical:
100,000 min at full load

Isolated inputs
Table 2. Isolated input specifications
NumberType
Voltage range
Isolation
Resistance
Response
Filters8
Non-polarized, opto-isolated (Not TTL compatible)
DC:
5-28 VAC:
5-28 V (50-1000 Hz)
500 V
1.6 K Ohms min.
without filter:
20 µS
with filter:
5 mS
Time constant:
5 ms (200 Hz)
Filter control:
Each input individually switch selectable

Power consumption
Table 3. Power consumption specifications+5 V PowerAll relays off:
All relays on:

0.20 A typical
0.70 A typical15

CIO-PDISO8 User's Guide

Specifications

Environmental
Table 4. Environmental specifications
Operating temperature range
Storage temperature range
Humidity

0 to 50 °C-20 to 70 °C
0 to 90% non-condensing

Main connector and pin out
Table 5. Main connector specifications
Connector type
Dielectric strength
Current rating
Compatible cables
Compatible accessory products with the
C37FF-x and C37FFS-x

37-pin D type (male)>1000 Vrms
2A
C37FF-x, where x = length in feet
C37FFS-x, where x = 5 or 10 feet
CIO-MINI37
SCB-37
Table 6. Connector pin out

Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19

Signal Name
Input 7A
Input 6A
Input 5A
Input 4A
Input 3A
Input 2A
Input 1A
Input 0A
Relay 7 (C)Relay 6 (C)Relay 5 (C)Relay 4 (NC)
Relay 4 (NO)
Relay 3 (C)Relay 2 (NC)
Relay 2 (NO)
Relay 1 (C)Relay 0 (NC)
Relay 0 (NO)

Pin
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37

Signal Name
Input 7B
Input 6B
Input 5B
Input 4B
Input 3B
Input 2B
Input 1B
Input 0B
Relay 7 (NO)
Relay 6 (NO)
Relay 5 (NO)
Relay 4 (C)Relay 3 (NC)
Relay 3 (NO)
Relay 2 (C)Relay 1 (NC)
Relay 1 (NO)
Relay 0 (C)16Declaration of Conformity
Manufacturer:
Address:

Category:

Measurement Computing Corporation
10 Commerce Way
Suite 1008
Norton, MA 02766
USAElectrical equipment for measurement, control and laboratory use.

Measurement Computing Corporation declares under sole responsibility that the product

CIO-PDISO8
to which this declaration relates is in conformity with the relevant provisions of the following standards or otherdocuments:
EU EMC Directive 89/336/EEC: Electromagnetic Compatibility, EN55022 (1987), EN50082-1
Emissions: Group 1, Class B


EN55022 (1987): Radiated and Conducted emissions.

Immunity: EN50082-1


IEC 801-2 (1987): Electrostatic Discharge immunity, Criteria A.
IEC 801-3 (1984): Radiated Electromagnetic Field immunity Criteria A.
IEC 801-4 (1988): Electric Fast Transient Burst immunity Criteria A.

Declaration of Conformity based on tests conducted by Chomerics Test Services, Woburn, MA 01801, USA in
November, 1995. Test records are outlined in Chomerics Test Report #EMI0168A.95.
We hereby declare that the equipment specified conforms to the above Directives and Standards.

Carl Haapaoja, Director of Quality Assurance

Measurement Computing Corporation
10 Commerce Way
Suite 1008
Norton, Massachusetts 02766(508) 946-5100
Fax: (508) 946-9500
E-mail: info@mccdaq.com
www.mccdaq.com