Keithley PDISO-8 User Manual

PDISO-8

User’s Guide

A GREATER MEASURE OF CONFIDENCE

WARRANTY

Hardware

Keithley Instruments, Inc. warrants that, for a period of one (1) year from the date of shipment (3 years for Models 2000,
2001, 2002, 2010 and 2700), the Keithley Hardware product will be free from defects in materials or workmanship. This
warranty will be honored provided the defect has not been caused by use of the Keithley Hardware not in accordance with
the instructions for the product. This warranty shall be null and void upon: (1) any modification of Keithley Hardware that
is made by other than Keithley and not approved in writing by Keithley or (2) operation of the Keithley Hardware outside
of the environmental specifications therefore.

Upon receiving notification of a defect in the Keithley Hardware during the warranty period, Keithley will, at its option,
either repair or replace such Keithley Hardware. During the first ninety days of the warranty period, Keithley will, at its
option, supply the necessary on site labor to return the product to the condition prior to the notification of a defect. Failure
to notify Keithley of a defect during the warranty shall relieve Keithley of its obligations and liabilities under this
warranty.

Other Hardware

The portion of the product that is not manufactured by Keithley (Other Hardware) shall not be covered by this warranty,
and Keithley shall have no duty of obligation to enforce any manufacturers' warranties on behalf of the customer. On those
other manufacturers’ products that Keithley purchases for resale, Keithley shall have no duty of obligation to enforce any
manufacturers’ warranties on behalf of the customer.

Software

Keithley warrants that for a period of one (1) year from date of shipment, the Keithley produced portion of the software or
firmware (Keithley Software) will conform in all material respects with the published specifications provided such Keithley
Software is used on the product for which it is intended and otherwise in accordance with the instructions therefore.
Keithley does not warrant that operation of the Keithley Software will be uninterrupted or error-free and/or that the Keithley
Software will be adequate for the customer's intended application and/or use. This warranty shall be null and void upon any
modification of the Keithley Software that is made by other than Keithley and not approved in writing by Keithley.

If Keithley receives notification of a Keithley Software nonconformity that is covered by this warranty during the warranty
period, Keithley will review the conditions described in such notice. Such notice must state the published specification(s)
to which the Keithley Software fails to conform and the manner in which the Keithley Software fails to conform to such
published specification(s) with sufficient specificity to permit Keithley to correct such nonconformity. If Keithley deter­mines that the Keithley Software does not conform with the published specifications, Keithley will, at its option, provide
either the programming services necessary to correct such nonconformity or develop a program change to bypass such
nonconformity in the Keithley Software. Failure to notify Keithley of a nonconformity during the warranty shall relieve
Keithley of its obligations and liabilities under this warranty.

Other Software

OEM software that is not produced by Keithley (Other Software) shall not be covered by this warranty, and Keithley shall
have no duty or obligation to enforce any OEM's warranties on behalf of the customer.

Other Items

Keithley warrants the following items for 90 days from the date of shipment: probes, cables, rechargeable batteries, diskettes,
and documentation.

Items not Covered under Warranty

This warranty does not apply to fuses, non-rechargeable batteries, damage from battery leakage, or problems arising from
normal wear or failure to follow instructions.

Limitation of Warranty

This warranty does not apply to defects resulting from product modification made by Purchaser without Keithley's express
written consent, or by misuse of any product or part.

Disclaimer of Warranties

EXCEPT FOR THE EXPRESS WARRANTIES ABOVE KEITHLEY DISCLAIMS ALL OTHER WARRANTIES,
EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION, ALL IMPLIED WARRANTIES OF MERCHANT­ABILITY AND FITNESS FOR A PARTICULAR PURPOSE. KEITHLEY DISCLAIMS ALL WARRANTIES WITH
RESPECT TO THE OTHER HARDWARE AND OTHER SOFTWARE.

Limitation of Liability

KEITHLEY INSTRUMENTS SHALL IN NO EVENT, REGARDLESS OF CAUSE, ASSUME RESPONSIBILITY FOR
OR BE LIABLE FOR: (1) ECONOMICAL, INCIDENTAL, CONSEQUENTIAL, INDIRECT, SPECIAL, PUNITIVE OR
EXEMPLARY DAMAGES, WHETHER CLAIMED UNDER CONTRACT, TORT OR ANY OTHER LEGAL THEORY,
(2) LOSS OF OR DAMAGE TO THE CUSTOMER'S DATA OR PROGRAMMING, OR (3) PENALTIES OR PENALTY
CLAUSES OF ANY DESCRIPTION OR INDEMNIFICATION OF THE CUSTOMER OR OTHERS FOR COSTS, DAM­AGES, OR EXPENSES RELATED TO THE GOODS OR SERVICES PROVIDED UNDER THIS WARRANTY.

Keithley Instruments, Inc.

Sales Offices: BELGIUM: Bergensesteenweg 709 • B-1600 Sint-Pieters-Leeuw • 02-363 00 40 • Fax: [phone]

CHINA: Yuan Chen Xin Building, Room 705 • 12 Yumin Road, Dewai, Madian • Beijing 100029 • 8610-6202-2886 • Fax: [phone]
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NETHERLANDS: Postbus 559 • 4200 AN Gorinchem • 0183-635333 • Fax: [phone]
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28775 Aurora Road • Cleveland, Ohio 44139 • 440-248-0400 • Fax: [phone]

1-888-KEITHLEY (534-8453) • www.keithley.com

4/02

The information contained in this manual is believed to be accurate and reliable. However, Keithley
Instruments, Inc., assumes no responsibility for its use or for any infringements of patents or other rights
of third parties that may result from its use. No license is granted by implication or otherwise under any
patent rights of Keithley Instruments, Inc.

KEITHLEY INSTRUMENTS, INC., SHALL NOT BE LIABLE FOR ANY SPECIAL, INCIDENTAL,
OR CONSEQUENTIAL DAMAGES RELATED TO THE USE OF THIS PRODUCT. THIS
PRODUCT IS NOT DESIGNED WITH COMPONENTS OF A LEVEL OF RELIABILITY
SUITABLE FOR USE IN LIFE SUPPORT OR CRITICAL APPLICATIONS.

Refer to your Keithley Instruments license agreement for specific warranty and liability information.

All brand and product names are trademarks or registered trademarks of their respective companies.

© Copyright Keithley Instruments, Inc., 1988, 1994, 1998, 1999.

All rights reserved. Reproduction or adaptation of any part of this documentation beyond that permitted
by Section 117 of the 1976 United States Copyright Act without permission of the Copyright owner is
unlawful.

Keithley Instruments, Inc.

28775 Aurora Road, Cleveland, OH 44139

PDISO-8

User’s Guide

Revision E - April 2001

Part Number: 70850

S

The following safety precautions should be observed before using this product and any associated instrumentation.
Although some instruments and accessories would normally be used with non-hazardous voltages, there are situations
where hazardous conditions may be present.

This product is intended for use by qualified personnel who recognize shock hazards and are familiar with the safety
precautions required to avoid possible injury. Read and follow all installation, operation, and maintenance information
carefully before using the product. Refer to the manual for complete product specifications.

If the product is used in a manner not specified, the protection provided by the product may be impaired.

The types of product users are:

Responsible body is the individual or group responsible for the use and maintenance of equipment, for ensuring that

the equipment is operated within its specifications and operating limits, and for ensuring that operators are adequately
trained.

Operators use the product for its intended function. They must be trained in electrical safety procedures and proper use

of the instrument. They must be protected from electric shock and contact with hazardous live circuits.

Maintenance personnel perform routine procedures on the product to keep it operating properly, for example, setting

the line voltage or replacing consumable materials. Maintenance procedures are described in the manual. The proce­dures explicitly state if the operator may perform them. Otherwise, they should be performed only by service personnel.

Service personnel are trained to work on live circuits, and perform safe installations and repairs of products. Only

properly trained service personnel may perform installation and service procedures.

Keithley products are designed for use with electrical signals that are rated Installation Category I and Installation
Category II, as described in the International Electrotechnical Commission (IEC) Standard IEC 60664. Most mea­surement, control, and data I/O signals are Installation Category I and must not be directly connected to mains voltage
or to voltage sources with high transient over-voltages. Installation Category II connections require protection for high
transient over-voltages often associated with local AC mains connections. Assume all measurement, control, and data
I/O connections are for connection to Category I sources unless otherwise marked or described in the Manual.

Exercise extreme caution when a shock hazard is present. Lethal voltage may be present on cable connector jacks or
test fixtures. The American National Standards Institute (ANSI) states that a shock hazard exists when voltage levels
greater than 30V RMS, 42.4V peak, or 60VDC are present.

age is present in any unknown circuit before measuring.

Operators of this product must be protected from electric shock at all times. The responsible body must ensure that
operators are prevented access and/or insulated from every connection point. In some cases, connections must be ex­posed to potential human contact. Product operators in these circumstances must be trained to protect themselves from
the risk of electric shock. If the circuit is capable of operating at or above 1000 volts,

may be exposed.

Do not connect switching cards directly to unlimited power circuits. They are intended to be used with impedance
limited sources. NEVER connect switching cards directly to AC mains. When connecting sources to switching cards,
install protective devices to limit fault current and voltage to the card.

Before operating an instrument, make sure the line cord is connected to a properly grounded power receptacle. Inspect
the connecting cables, test leads, and jumpers for possible wear, cracks, or breaks before each use.

afety Precautions

A good safety practice is to expect that hazardous volt-

no conductive part of the circuit

5/02

When installing equipment where access to the main power cord is restricted, such as rack mounting, a separate main
input power disconnect device must be provided, in close proximity to the equipment and within easy reach of the
operator.

For maximum safety, do not touch the product, test cables, or any other instruments while power is applied to the cir­cuit under test. ALWAYS remove power from the entire test system and discharge any capacitors before: connecting
or disconnecting cables or jumpers, installing or removing switching cards, or making internal changes, such as in­stalling or removing jumpers.

Do not touch any object that could provide a current path to the common side of the circuit under test or power line (earth)
ground. Always make measurements with dry hands while standing on a dry, insulated surface capable of withstanding the
voltage being measured.

The instrument and accessories must be used in accordance with its specifications and operating instructions or the
safety of the equipment may be impaired.

Do not exceed the maximum signal levels of the instruments and accessories, as defined in the specifications and op­erating information, and as shown on the instrument or test fixture panels, or switching card.

When fuses are used in a product, replace with same type and rating for continued protection against fire hazard.

Chassis connections must only be used as shield connections for measuring circuits, NOT as safety earth ground con­nections.

If you are using a test fixture, keep the lid closed while power is applied to the device under test. Safe operation re­quires the use of a lid interlock.

If or is present, connect it to safety earth ground using the wire recommended in the user documentation.

!

The symbol on an instrument indicates that the user should refer to the operating instructions located in the manual.

The symbol on an instrument shows that it can source or measure 1000 volts or more, including the combined
effect of normal and common mode voltages. Use standard safety precautions to avoid personal contact with these
voltages.

The

WARNING

associated information very carefully before performing the indicated procedure.

The

CAUTION

the warranty.

Instrumentation and accessories shall not be connected to humans.

Before performing any maintenance, disconnect the line cord and all test cables.

To maintain protection from electric shock and fire, replacement components in mains circuits, including the power
transformer, test leads, and input jacks, must be purchased from Keithley Instruments. Standard fuses, with applicable
national safety approvals, may be used if the rating and type are the same. Other components that are not safety related
may be purchased from other suppliers as long as they are equivalent to the original component. (Note that selected parts
should be purchased only through Keithley Instruments to maintain accuracy and functionality of the product.) If you
are unsure about the applicability of a replacement component, call a Keithley Instruments office for information.

To clean an instrument, use a damp cloth or mild, water based cleaner. Clean the exterior of the instrument only. Do
not apply cleaner directly to the instrument or allow liquids to enter or spill on the instrument. Products that consist
of a circuit board with no case or chassis (e.g., data acquisition board for installation into a computer) should never
require cleaning if handled according to instructions. If the board becomes contaminated and operation is affected,
the board should be returned to the factory for proper cleaning/servicing.

heading in a manual explains dangers that might result in personal injury or death. Always read the

heading in a manual explains hazards that could damage the instrument. Such damage may invalidate

Table of Contents

Preface

Overview

1

Features and Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Supporting Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

2

Functional Description

Installation

3

Important Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Inventorying Required Installation Resources . . . . . . . . . . . . . 3-2

Installing DriverLINX Software and Documentation . . . . . . . . 3-3

Configuring Your Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Preparing and Installing Your Board . . . . . . . . . . . . . . . . . . . . . 3-7

Unwrapping and Inspecting the Board . . . . . . . . . . . . . . . . . 3-7

Setting the Board Address and Response Switches . . . . . . . 3-8

Installing the Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

Checking Your Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

I/O Bit Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

Output Set Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16

Input Read Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20

4

Cabling and Wiring

Attaching an STA-U or STP-37/FC . . . . . . . . . . . . . . . . . . . . . 4-2

Attaching an STC-37 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Usage Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

Using Relay Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

Using Isolated Control Inputs . . . . . . . . . . . . . . . . . . . . . . . 4-6

Programming

5

i

ii

Troubleshooting

6

Problem Isolation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Testing the I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

I/O Bit Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Output Set Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6

Input Read Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10

Testing the Board and Host Computer . . . . . . . . . . . . . . . . 6-11

Testing the Accessory Slot and I/O Connections . . . . . . . . 6-11

Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-12

A

Specifications

B

Connector Pin Assignments

Register Maps

C

Relay Output Register Data Format . . . . . . . . . . . . . . . . . . . C-2

Isolated Control Input Register Data Format . . . . . . . . . . . . C-3

Index

List of Figures

Figure 2-1 Block Diagram of the PDISO-8 . . . . . . . . . . . . . 2-1

Figure 3-1 Switch Locations . . . . . . . . . . . . . . . . . . . . . . . . 3-8

Figure 3-2 8-Position Response Switch . . . . . . . . . . . . . . . 3-10

Figure 3-3 An AIO Panel example . . . . . . . . . . . . . . . . . . . 3-12

Figure 3-4 DIO channel tab example . . . . . . . . . . . . . . . . . 3-13

Figure 3-5 Configuring the digital I/O channels as inputs

and outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15

Figure 3-6 Configuring channel 0 for output bit

pattern A . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15

Figure 3-7 An AIO Panel example . . . . . . . . . . . . . . . . . . . 3-17

Figure 3-8 Configuring the digital I/O channels as inputs

and outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18

Figure 3-9 Configuring channel 0 for output bit

pattern A . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18

Figure 3-10 Configuring channel 0 for output bit

pattern B . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19

Figure 4-1 Pin Assignments for the Main I/O Connector . . 4-1
Figure 4-2 Attaching an STA-U or STP-37/FC to a

PDISO-8 Board . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Figure 4-3 Layout of STC-37 Screw Terminal

Connector Panel . . . . . . . . . . . . . . . . . . . . . . . . 4-3

Figure 4-4 Attaching an STC-37 Accessory . . . . . . . . . . . . 4-4

Figure 4-5 Adding a Snubber Network Across Relay

Contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

Figure 4-6 Equivalent Circuit of an Isolated

Control Input . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

Figure 4-7 Unfiltered Opto-Isolator Output with

AC Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

Figure 6-1 An AIO Panel example . . . . . . . . . . . . . . . . . . . . 6-2

Figure 6-2 DIO channel tab example . . . . . . . . . . . . . . . . . . 6-3

Figure 6-3 Configuring the digital I/O channels as inputs

and outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5

Figure 6-4 Configuring channel 0 for output bit pattern A . 6-5

Figure 6-5 An AIO Panel example . . . . . . . . . . . . . . . . . . . . 6-7

Figure 6-6 Configuring the digital I/O channels as inputs

and outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8

Figure 6-7 Configuring channel 0 for output bit pattern A . 6-8
Figure 6-8 Configuring channel 0 for output bit pattern B . 6-9

Figure B-1 Main I/O Connector Pin Assignments . . . . . . . . B-1

iii

List of Tables

Table 3-1 Values of Base Address Switch Positions . . . . . 3-9

Table A-1 Output Specifications . . . . . . . . . . . . . . . . . . . . . A-1

Table A-2 Isolated Control Input Specifications . . . . . . . . . A-2

Table A-3 General Environmental Specifications . . . . . . . . A-2

Table A-4 Power Consumption Specifications . . . . . . . . . . A-2

Table C-1 I/O Map and Functions . . . . . . . . . . . . . . . . . . . . C-2

Table C-2 Relay Addresses in the Relay Output Register . . C-2
Table C-3 Input Addresses in the Isolated Control

Input Register . . . . . . . . . . . . . . . . . . . . . . . . . C-3

iv

Preface

The

PDISO-8 User’s Guide

installation, functions, and operation of the PDISO-8 board. This guide
describes board capabilities, board setup and installation, use of wiring
accessories, included-software characteristics and installation, and
combined board and software configuration. There are also sections on
usage and troubleshooting.

is intended to help you understand the

To follow the information and instructions contained in this manual, you
must be familiar with data acquisition principles, with the Windows

®

95/98/NT operating system, and with your application.

The

PDISO-8 User’s Guide

●

Section 1 describes board features, supporting software, and

is organized as follows:

accessories.

●

Section 2 summarizes functional information about the board. This
section contains a block diagram and brief descriptions of I/O.

Section 3 describes important safety information, how to install the

●

DriverLINX software and documentation, how to unpack, set up, and
install the board, and how to configure and check the installation.

●

Section 4 shows the preferred methods for making I/O (input/output)
connections, using the available accessories and cables. This section
also contains usage notes.

●

Section 5 briefly describes the need to program through the
DriverLINX interface provided with your board, and tells how to
access the extensive DriverLINX documentation.

●

Section 6 contains information on testing the inputs and relays and
for isolating and determining the source of operating problems. This
section also contains instructions for obtaining technical support.

v

Appendix A contains specifications for the PDISO-8.

●

●

Appendix B contains pin assignments for the main I/O connector of
the PDISO-8.

●

Appendix C provides register maps, for background reference only
(you program the PDISO-8 board through the DriverLINX interface,
not at the register level).

●

An index completes the manual.

vi

The PDISO-8 is a low-cost, 8-channel, isolated input/output, interface
board for control and sensing operations. The combined board and
supplied software installs and runs in any IBM PC-compatible computer
that runs the Microsoft Windows® 95/98/NT operating system
(Pentium®-series processor recommended). This section lists PDISO-8
features and applications, summarizes features of the DriverLINX
software that is supplied with the board, and describes available PDISO-8
accessories.

Features and Applications

Features of the PDISO-8 are as follows:

1

Overview

Eight optically isolated inputs

●

Eight electromechanical relay outputs

●

●

3A contact ratings

Typical applications for the PDISO-8 are as follows:

●

Energy management

●

Product test

Security control

●

●

Annunciation

●

Laboratory automation

Factory automation

●

1-1

Supporting Software

DriverLINX software is supplied by Keithley with the PDISO-8 board.
DriverLINX provides convenient interfaces to configure and set I/O bits
without register-level programming.

Most importantly, however, DriverLINX supports those programmers
who wish to create custom applications using Visual C/C++, Visual Basic,
or Delphi. DriverLINX accomplishes foreground and background tasks to
perform data acquisition. The software includes memory and data buffer
management, event triggering, extensive error checking, and context
sensitive online help.

More specifically, DriverLINX provides application developers a
standardized interface to over 100 services for creating foreground and
background tasks for the following:

●

Analog input and output

Digital input and output

●

●

Time and frequency measurement

●

Event counting

Pulse output

●

Period measurement

●

In addition to basic I/O support, DriverLINX also provides:

●

Built-in capabilities to handle memory and data buffer management

●

A selection of starting and stopping trigger events, including
pre-triggering, mid-point triggering and post-triggering protocols

●

Extensive error checking

●

Context-sensitive on-line help system

DriverLINX is essentially hardware independent, because its portable
APIs work across various operating systems. This capability eliminates
unnecessary programming when changing operating system platforms.

1-2 Overview

Accessories

The following accessories are available for use with PDISO-8 boards

voltages up to 30V RMS, 42.4V peak, or 60VDC:

●

STA-U

— screw terminal panel. This accessory connects to the main
I/O connector of a PDISO-8 through a C1800 cable to connect all I/O
lines to labeled screw terminals.

●

STC-37

— screw terminal connector panel. This accessory connects
directly the main I/O connector of a PDISO-8 to provide
general-purpose, screw-terminal connections in a compact form
factor.

●

STP-37/FC

— screw terminal panel with a female DB-37 connector.
This accessory connects to the main I/O connector of a PDISO-8
through a C-1800/M cable. The printed-circuit area of this accessory
is covered to provide extra protection against personal or tool contact
with signals.

●

C1800

— cable. The C1800 is an 18-inch ribbon cable terminated at

each end with a 37-pin, D-type connector.

●

C-1800/M

— cable. The C-1800/M is an 18-inch ribbon cable
terminated at one end with a connector to fit the main I/O connector
of a board and terminated at the other end with a connector to fit the
I/O connector of an STP-37/FC accessory.

at

Warning

Refer to Section 4 for information on connecting these accessories to
PDISO-8 boards.

Do not use the STA-U, STP-37/FC, C1800, and C-1800/M accessories at
voltages above 30V RMS, 42.4V peak, or 60VDC. These accessories are
rated for 30V RMS, 42.4V peak, or 60VDC maximum. Use at higher
voltages may result in shock hazard.

1-3

2

Functional Description

This section describes the features of the PDISO-8 board to familiarize
you with the operating options and to enable you to make the best use of
your board. Figure 2-1 shows a block diagram of the PDISO-8 board.

470 Ω

IP0

470 Ω

IP1

470 Ω

IP2

470 Ω

IP3

470 Ω

IP4

470 Ω

IP5

470 Ω

IP6

470 Ω

IP7

Isolated Inputs

Base

Address

Switch

Bit 0

Bit 1

Bit 2

Bit 3

Bit 4

Bit 5

Bit 6

Bit 7

Address

Decode

and R/W

Logic

Input Register and Switchable Filters

Response

Switch

Bus

Buffers

Bit 0

Bit 1

Output Register with Readback

Bit 2

Bit 3

Bit 4

Bit 5

Bit 6

Bit 7

Relay Outputs

Reset

OP0

OP1

OP2

OP3

OP4

OP5

OP6

OP7

Computer Bus

Figure 2-1. Block Diagram of the PDISO-8

2-1

The eight electro-mechanical relay outputs (contact closures) are
addressed as a single I/O byte. Five of these relays are Form C (SPDT)
contacts, and three of the relays are Form A (SPST and normally open).
The relay contacts are silver alloy and are rated at 3A at 125VAC or
28VDC with a resistive load. The state of the relays can be determined by
reading back the data from the same I/O port.

The eight individual, optically isolated inputs can be read as a single I/O
port byte. Inputs are not polarity-sensitive and can be driven from DC or
AC (50 to 1000Hz) control voltages in the range of 5 to 24V

rms

. Each
input includes a switchable, slow/fast filter with a time constant of 5ms.
For AC input voltages, you must switch in the filter. For DC input
voltages, you can switch out the filter to obtain response speeds of less
than 50µs, or you can switch in the filter for maximum noise suppression
or contact debouncing. You can also mix inputs of AC and DC voltages,
and you can drive inputs from standard 12/24VAC control transformers.

2-2 Functional Description

3

Installation

This section describes installation and configuration of the PDISO-8
board and software. Read this section before you attempt to install and
use your PDISO-8 board.

After discussing important safety instructions for the PDISO-8 board, this
section contains the following procedures, in the order in which they are
to be performed:

●

Inventorying installation resources

Installing the DriverLINX software needed to operate your PDISO-8

●

board

●

Configuring the installation in software

Unpacking and inspecting the board, setting the base address and

●

response filters of the board, and installing the board in your
computer

●

Checking the installation

If you encounter any problems with the installation, refer to Section 6 for
troubleshooting information.

Note:

board. Otherwise, the device drivers will be more difficult to install.

Install the DriverLINX software before installing the PDISO-8

3-1

Important Safety Instructions

PDISO-8 boards are prominently labeled to warn of shock hazard. Before
you install your PDISO-8 board, perform the following steps:

1. Read the warnings in this section.

2. When installing, cabling, and wiring your board, pay close attention

to the warnings on the board labels.

3. When using the board, do not exceed the ratings specified in

Appendix A.

Warning

Because you can connect the relay contacts of a PDISO-8 board to high
voltage, you can turn some areas of the board surface into a shock hazard.
A shock hazard can exist on those board areas even when your computer
is powered off. To protect you from exposure to areas of shock hazard,
Keithley furnishes PDISO-8 boards only with fully installed protective
covers (front and rear), attached to the board on each side by nylon
screws. While you can remove the covers to service a PDISO-8 board,

you must never use this board with its covers removed!

you must disconnect all cables and wiring before servicing this board.

The procedures in the section are intended for qualified service personnel.
Do not perform these procedures unless you are qualified to do so.

Inventorying Required Installation Resources

Before installing DriverLINX and the board, do the following:

1. Inventory your PDISO-8 board’s configuration settings.

2. Determine the resources your PDISO-8 board requires.

3. Inventory your computer’s resources already allocated to other

installed devices.

In addition,

4. Determine whether your computer has sufficient resources for your

PDISO-8 board.

3-2 Installation

5. Determine whether your PDISO-8 board can use your computer’s

free resources.

6. Continue with the next section, “Installing DriverLINX Software and

Documentation.”

Note:

The DriverLINX Installation and Configuration Guide , Section 1,

amplifies the inventory process in checklist items 1-5. (Disregard the rest
of the checklist items for now.) To display this manual from your
DriverLINX PIO Series CD-ROM, open the Windows Explorer, then
double click on

X:\Drvlinx4\Docs\Instconf.pdf

, where X = the letter of
the CD-ROM drive. Acrobat Reader must already be installed on the other
system. If necessary, you can first install Acrobat Reader directly from the
CD-ROM by double clicking X:\Acrobat\setup.exe .

Installing DriverLINX Software and Documentation

Note:

already installed on your system, you must also install the PIO Series
DriverLINX version. In the process, some DriverLINX capabilities
shared by all boards may be upgraded (test utilities, for example).

This section discusses installation of drivers, interfaces, and
documentation. The component installation options provided by the
DriverLINX setup program are as follows:

Even if DriverLINX versions other than the PIO Series version are

●

Install Drivers — This required component installs only the files you

need for configuring your hardware and running third-party
data-acquisition applications that require DriverLINX.

●

Install Interfaces — This optional component installs the files and

example programs that you will need to develop custom applications
for DriverLINX using C/C++, Visual Basic, and Delphi.

●

Install Documentation — This optional component installs

electronic documentation for DriverLINX that you can read, search,
and print using the Adobe Acrobat Reader.

Install Acrobat — This optional component installs the Adobe

●

Acrobat Reader for the DriverLINX electronic documentation.

3-3

Install the DriverLINX software and board as follows:

1. Place the DriverLINX PIO Series CD-ROM in your drive and wait a

few seconds. On most systems, setup starts automatically. If not, run
the setup.exe file, found in the root directory of the CD-ROM.

A DriverLINX Browser Introduction screen appears. Thereafter, the
DriverLINX CD Navigator screen appears automatically after waiting
a few seconds or after clicking

Note:

On the DriverLINX CD Navigator and other DriverLINX Browser

Next

.

screens, place the cursor over a menu item to see an explanation. A star
next to a menu item means that it was selected previously.

Before continuing with this installation, Keithley suggests clicking

Me First

on the DriverLINX CD Navigator and reviewing the brief

Read

information that appears.

2. On the DriverLINX CD Navigator screen, click Install DriverLINX .

An Install These DriverLINX Components screen appears.

3. Click Install Drivers , and then follow the series of on-screen

instructions. When done, the Install These DriverLINX Components
screen reappears.

4. If you do not plan to develop custom application software for your

PDISO-8 board, then skip to step 5. If you do plan to develop custom
application software, you must install DriverLINX interfaces before
writing the software. Install them now by clicking

Install Interfaces

and following the series of on-screen instructions. When done, the
Install These DriverLINX Components screen reappears.

5. Click

Install Documentation

and follow the series of on-screen
instructions. This step installs the manuals. When done, the Install
These DriverLINX Components screen reappears.

6. If Acrobat Reader is not already installed on your system, install it
now. You need Acrobat Reader to read the manuals, a section of
which you must access in step 9. Click on

Install Acrobat

and follow
the series of on-screen instructions. When done, the Install These
DriverLINX Components screen reappears.

3-4 Installation

7. Click Exit. Then, on the screen that appears saying “Thank you for
using DriverLINX,” click

Done

. The System Settings Changed dialog

box appears.

8. On the System Settings Changed dialog box, click No . (The system
will be rebooted and configured later under “Configuring Your
Installation” on page 3-6.) The screen returns to the Windows
desktop.

9. Print out one section of a DriverLINX manual that you will briefly
review later during system configuration. Proceed as follows:

a. In the

Start

menu under

Programs

→

DriverLINX, click

On-line Manuals. A menu document appears.

b. In the menu document, scroll until you find the major category

Configuration .

c. Under Configuration click Hardware References . A list of

documents appears.

d. In the list of documents, click Keithley PIO Series . Acrobat

Reader opens and the manual entitled Using DriverLINX with

Your Hardware—Keithley PIO Series appears.

e. Print the following section from the Using DriverLINX with Your

Hardware—Keithley PIO Series manual: “Configuring the PIO

Series.”

Note:

If your data acquisition system is not connected to a printer, you

can display and print the Using DriverLINX with Your Hardware—

Keithley PIO Series manual sections from another system, directly from

the CD-ROM (without installing anything). To display the manual, open
the Windows Explorer, then double click on

X:\Drvlinx4\Docs\Notes\kmbpio.pdf

, where X = the letter of the
CD-ROM drive. Acrobat Reader must already be installed on the other
system. If necessary, you can first install Acrobat Reader directly from the
CD-ROM by double clicking X:\Acrobat\setup.exe .

10. Continue with the next section, “Configuring Your Installation.”

3-5

Configuring Your Installation

Configure the installation as follows:

1. Locate and briefly review the DriverLINX manual section,

“Configuring the PIO Series,” that you printed earlier during step 9 of
“Installing DriverLINX Software and Documentation.” Reviewing
this section will help prepare you to input information and select
options when configuring your installation.

Note:

installations for Windows NT and Windows 95/98.

2. Reboot your computer. The DriverLINX Plug and Play Wizard

Note:

will not reappear during the current computer session, although it may
appear after a subsequent reboot. If you wish to configure your board
sometime later, you can start the Plug and Play Wizard manually from a
batch file. In the Windows Explorer, double click

X:\Drvlinx4\Help\kmbpio.bat

which DriverLINX is installed.

3. On the Plug and Play Wizard, click Wizard and follow the series of

Note:

Diagnostics to find the free resources that the Plug and Play Wizard asks
you to assign. However, if your board requires an interrupt, to reliably
find a free ISA interrupt you may need to: 1) configure your computer as
having a non-Plug and Play operating system, using BIOS setup, and then

2) individually assign the interrupt to the ISA bus.

Be sure to note and follow all configuration differences between

appears on your screen automatically at the end of the boot cycle.

If you do not run the DriverLINX Plug and Play Wizard now, it

, where X is the letter of the drive on

on-screen instructions that appear. The wizard will first lead you
through the steps of installing your hardware—from a software
viewpoint—and configuring it.

If your operating system is Windows NT, use Windows NT

4. Continue with the next section, “Preparing and Installing Your

Board.”

3-6 Installation

Preparing and Installing Your Board

Caution:

removing a board. Installing or removing a board while power is on can
damage your computer, the board, or both.

Handle the board in a static-controlled workstation; wear a grounded
wrist strap. Discharge static voltage differences between the wrapped
board and the handling environment before removing the board from its
protective wrapper. Failure to discharge static electricity before and
during handling may damage semiconductor circuits on the board.

Handle the board using the mounting bracket. Do not touch the circuit
traces or connector contacts when handling the board.

Ensure that the computer is turned OFF before installing or

Unwrapping and Inspecting the Board

Caution:

performing the following procedure.

After you remove the wrapped board from its outer shipping carton,
proceed as follows:

Your computer must be turned OFF and grounded before

1. The board is packaged at the factory in an anti-static wrapper that

must not be removed until you have discharged any static electricity
by either of the following methods:

– If you are equipped with a grounded wrist strap, you discharge

static electricity as soon as you hold the wrapped board.

– If you are not equipped with a grounded wrist strap, you can

discharge static electricity by holding the wrapped board in one
hand while placing your other hand firmly on a metal portion of
the computer chassis.

2. Carefully unwrap the board from its anti-static wrapping material.

(You may wish to store the wrapping material for future use.)

3-7

3. Inspect the board for signs of damage. If damage is apparent, arrange

to return the board to the factory (see “Technical Support” on page
6-12).

4. Check the remaining contents of your package against the packing list

to be sure your order is complete. Report any missing items,
immediately.

5. Continue with the next procedure, “Setting the Board Address and

Response Switches.”

Setting the Board Address and Response Switches

To physically configure the PDISO-8 board, you must set two 8-position
DIP switches: the base address switch and the response switch. These two
switches are located as shown in Figure 3-1.

Response
Switch

O
N

1 2 3 4 5 6

7 8

O
N

1 2 3 4 5 6

7 8

Base Address
Switch

Figure 3-1. Switch Locations

The following subsections describe the settings for these switches.

3-8 Installation

Setting the Base Address Switch

The base address switch is preset at the factory for 300h (see Figure 3-1).
If 300h was also assigned to the board when you ran the DriverLINX Plug
and Play Wizard, you do not need to reset the address switch. Otherwise,
reset the base address switch to conform to the base address assigned
when you ran the Wizard.

The PDISO-8 requires four consecutive I/O addresses, but only two are
used: one is for output/readback and the other is for input. You can set the
base address on any 4-byte boundary using the Base Address DIP switch.
If you install additional PDISO-8 boards, you must set a different base
address for each board.

Note:

When a position of the base address switch is set in the ON
direction, it has zero value. For example, Figure 3-1 shows the switch
positions set for a value of 300h or 768 decimal.

Table 3-1 lists the values for each position of the base address switch.

Table 3-1. Values of Base Address Switch Positions

Value When Switch Is Off

Switch

Position

1 9 512 200

2 8 256 100

3 7 128 80

4 6 64 40

5 5 32 20

6 4 16 10

7 3 8 8

82 4 4

Address

Line

Decimal Hexadecimal

Note:

Switch positions, as shown in Table 3-1, are marked on the switch
while corresponding address-line numbers are marked on the board and
just above the switch.

3-9

The address you specify must be within the range of 200 to 3FCh (512 to
1020 decimal) and on a 4-byte boundary.

Continue with the next procedure, “Setting the Response Switch.”

Setting the Response Switch

Each digital input channel includes a switchable, single-pole, RC filter
with a time constant of 5ms. The response switch contains a separate
position for each of the digital input channels, allowing you to switch the
filters individually in or out. Refer to Figure 3-2 to see which response
switch positions correspond to which digital channel.

O
N

1 2 3 4 5 6

1 0234567 Input Channel Numbers (IP0 to IP7)

Setting a switch position to ON turns
the filter on.

7 8

Figure 3-2. 8-Position Response Switch

Note:

Switch positions are marked on the switch while corresponding
input-channel numbers (corresponding to channel numbers IP0 to IP7) are
marked on the board and just above the switch.

If you are using AC input signals for certain channels, you must set the
filter switch to ON for each of those channels. A channel filter fills in the
portions of time that the AC input is at or close to zero voltage, putting the
signal read from the board at a continuous logic high when the input is
energized.

If you are using DC input signals, use of the filter is optional. If you
require a fast response (less than 50µs), turn the filter off. If you want a
slow response (about 5 to 10ms) for rejecting spurious noise or contact
bouncing, turn the filter on.

3-10 Installation

Installing the Board

Caution: Installing or removing a board while power is on can damage

your computer.

Use the following steps to install a PDISO-8 board in an accessory slot of
your computer:

1. Turn off power to the computer and all attached equipment.

2. Remove the computer chassis cover.

3. Select an unoccupied accessory slot, and remove the corresponding

blank plate from the I/O connector panel.

4. Insert and secure the PDISO-8 in the selected slot.

5. Replace the computer cover.

6. Continue with the next section, “Checking Your Installation.”

Checking Your Installation

The ability to start the DriverLINX AIO Panel utility, which is available
after you install DriverLINX, verifies that DriverLINX and the board are
installed and configured satisfactorily.

You can also test the functions of the PDISO-8 board, without needing to
write an application program, by connecting appropriate digital signals
and observing the responses with the DriverLINX AIO Panel. Before
connecting signals, first read the next Section, “Cabling and Wiring.”

To access the AIO Panel, do the following:

1. Click the Windows 95/98/NT Start tab.

2. In the Start menu, click Programs.

3. Find the DriverLINX

find the AIO Panel entry.

4. Click on the AIO Panel entry. The Analog I/O Panel should appear.

After you configure and check your installation, you can attach
accessories as needed and wire the external signals to the board. Refer to
Section 4, “Cabling and Wiring,” for instructions.

→ Test Panels entry, under which you should

3-11

I/O Bit Tests

General Information

1. Start the AIO Panel as follows:

a. In the Start menu, click Programs.

b. Find the DriverLINX ➧ Test Panels folder, under which you

c. Click on the AIO Panel entry. The Analog I/O Panel should

should find the AIO Panel entry.

appear, similar to the example in Figure 3-3. (If you have other
DriverLINX devices installed in addition to the digital
input/output card you are testing, they will also be listed. In that
case, select the desired digital I/O card and the proper device
number before proceeding.)

Figure 3-3. An AIO Panel example

3-12 Installation

Note: The “Driver Selection” column will show the actual DriverLINX

driver(s) you have installed.

2. On the AIO Control Panel, click the DIO tab.

Figure 3-4. DIO channel tab example

3-13

Note: The on-screen digital I/O controller works as follows:

● Channels 0 to 15 refer to the 8-bit general-purpose registers of

your digital input-output card. (Depending on which card is
used, the number of valid 8-bit registers will vary.) Bits
displayed on the Digital Input Panel and the Digital Output
Panel are numbered 0-7 for every channel. Refer elsewhere in
this manual for a description of the available ports and their
direction.

● Invalid channels and settings appear as dark gray squares. For

example:

- Non-existent channels always appear as dark gray squares.

- Channels configured as inputs will appear as dark gray

squares on the output panel.

● Valid channels and settings appear as white squares when OFF

and green squares when ON. (When the manual is printed in
black and white, valid channels and settings appear as white
squares when OFF and as light gray squares when ON.)

● The two-digit numeric displays under Input Bits and Output

Bits show the hexadecimal values of the adjacent bit patterns.

● To configure a valid channel either for input or output, use the

Digital Channel Configuration Panel. Click on either the
Input or Output square below the channel number. Note: this

selection will be disabled for channels which are fixed as input
or output by hardware design.

● To turn ON output-channel bits, use the Digital Output Panel.

First select the channel number of the bits to be turned on by
clicking on the appropriate square under Channels. Then, turn
ON a bit by clicking the appropriate square under Output Bits.
Turn OFF a bit in the same way.

● To read an input-channel bit, use the Digital Input Panel. First

select the channel number to be checked by clicking the
appropriate square under Channels. Then, read the numbered
bit under Input Bits. OFF input bits appear as black dots and
ON input bits appear as green dots. (When the manual is
printed in black and white, OFF input bits appear as black dots
and ON input bits appear as light gray dots.)

3-14 Installation

3. Under Digital I/O Configuration Panel, configure channels as

shown in Figure 3-5. (Actual channels available will vary according
to your hardware.)

KEITHLEY

Channel Configuration

0

Input

Output

123456789101112131415

Digital I/O Configuration Panel

Figure 3-5. Configuring the digital I/O channels as inputs and outputs

Note: For clarity when the manual is printed in black and white, the

control colors in Figure 3-5 and subsequent drawings will be shown as
follows:

Color on

Illustration

Actual Panel Function

BLACK DARK GRAY Invalid

WHITE LIGHT GRAY OFF

GRAY GREEN ON

4. In the Digital Output Panel under Channels, click on a channel

(here, channel 0) as shown in Figure 3-6.

KEITHLEY

Channels

1234567

0

8 9 10 11 12 13 14 15

Figure 3-6. Configuring channel 0 for output bit pattern A

5. In the Digital Output Panel under Output Bits, set the bits of the

channel as desired as shown in Figure 3-6. (Click on each bit position
to turn it ON or OFF.)

6. In the Digital Input Panel under Channels, click on a channel to

select it and display the logical state of its input lines.

Digital Output Panel

Output Bits

76 5 4 3210

55

3-15

Output Set Test

The output set test checks whether logic levels measured at all output pins
agree with output bit patterns set by software, using a DriverLINX
graphical interface (AIO Panel).

Note: This test is performed without user circuits being connected to the

outputs.

Perform the output set test as follows:

1. Ready the following equipment:

2. Turn OFF the host computer.

3. Connect the cable and accessory to your board.

4. Turn ON the host computer and boot Windows 95/98/NT.

● A digital voltmeter (DVM) or a digital multimeter (DMM) set to

measure voltages, or a logic probe capable of reading TTL logic
levels.

● A suitable accessory and cable for the board being tested.

5. Click the Windows 95/98/NT Start tab.

6. Start the AIO Panel as follows:

a. In the Start menu, click Programs.

b. Find the DriverLINX ➧ Test Panels folder, under which you

should find the AIO Panel entry.

c. Click on the AIO Panel entry. The Analog I/O Panel should

appear, similar to the example in Figure 3-7. (If you have other
DriverLINX devices installed in addition to the digital
input/output card you are testing, they will also be listed. In that
case, select the desired digital I/O card and the proper device
number before proceeding.)

3-16 Installation

Figure 3-7. An AIO Panel example

7. On the AIO Panel, click the DIO tab.

Note: To read an input-channel bit, use the Digital Input Panel. First,

select the channel number to be checked by clicking the appropriate
square under Channels. Then, read the numbered bit under Input Bits.
OFF input bits appear as black dots and ON input bits appear as green
dots. (When the manual is printed in black and white, OFF input bits
appear as black dots and ON input bits appear as light gray dots.) Further
information about this panel, how to make changes, and how to interpret
displays, is given in “I/O Bit Tests” of this section.

3-17

8. Under Digital I/O Configuration Panel, configure the output

channels to be tested as shown in Figure 3-8. (Actual output channels
available will vary according to your hardware.)

KEITHLEY

Channel Configuration

0

Input

Output

123456789101112131415

Digital I/O Configuration Panel

Figure 3-8. Configuring the digital I/O channels as inputs and outputs

Note: In Figure 3-8 and subsequent drawings of digital I/O controller

panels, the squares below invalid channels are colored black instead of
dark gray—for clarity when the manual is printed in black and white.

9. In the Digital Output Panel under Channels, click on an output

channel (channel 0 in this example) as shown in Figure 3-9.

KEITHLEY

Channels

1234567

0

8 9 10 11 12 13 14 15

Output Bits

76 5 4 3210

Digital Output Panel

55

Figure 3-9. Configuring channel 0 for output bit pattern A

10. In the Digital Output Panel under Output Bits, set the bits of

channel 0 for bit pattern A as shown in Figure 3-9.

11. Measure the voltage between signal ground and each bit of the output

port with a DMM or DVM. Make measurements at the cabled mating
connector of your accessory.

3-18 Installation

12. Each bit set to ON in the AIO Panel should output a logic-high signal

at the corresponding I/O terminal, reading typically about 4 volts
(minimum of 2.2 volts) at a DMM/DVM. Each bit set to OFF in the
AIO Panel should output a logic-low signal at the corresponding I/O
terminal, reading typically about 0 volts (maximum of 0.8 volts) at a
DMM/DVM. Do one of the following:

Note: The typical values shown are valid for boards with TTL

compatible outputs. For boards with relay outputs (REL-16, PDISO-8,
and PIO-32) the output will be a relay contact closure. For boards with
open collector outputs (PIO-HV) use a pull up resistor to an appropriate
voltage to detect output state. Refer to the hardware description in this
user’s guide for more details on the output’s electrical specification.

● If the bit patterns set on the AIO Panel do not agree with the

logic levels measured at the I/O terminals, the board is not
functioning properly. Stop here, and determine why.

● If the bit patterns set on the AIO Panel agree with the logic levels

measured at the I/O terminals, then repeat steps 9, 10, and 11 for
remaining output channels.

13. In the Digital Output Panel under Channels, click on the output

channel to test (channel 0 in this example) as shown in Figure 3-10.

KEITHLEY

Channels

1234567

0

8 9 10 11 12 13 14 15

Figure 3-10. Configuring channel 0 for output bit pattern B

14. In the Digital Output Panel under Output Bits, set the bits of

channel 0 for bit pattern B as shown in Figure 3-10.

15. Measure the voltage between signal ground and each bit of the output

port with a DMM or DVM. Make measurements at the STA-50
terminals or the cabled mating connector that is connected to the
selected CONN-3160-D1 50-pin connector.

Digital Output Panel

Output Bits

76 5 4 3210

AA

3-19

16. Again, each bit set to ON in the AIO Panel should output a logic-

high signal at the corresponding I/O terminal, reading typically about
4 volts (minimum of 2.2 volts) at a DMM/DVM. Each bit set to OFF
in the AIO Panel should output a logic-low signal at the correspond­ing I/O terminal, reading typically about 0 volts (maximum of 0.8
volts) at a DMM/DVM.

Note: The typical values shown are valid for boards with TTL

compatible outputs. For boards with relay outputs (REL-16, PDISO-8,
and PIO-32) the output will be a relay contact closure. For boards with
open collector outputs (PIO-HV) use a pull up resistor to an appropriate
voltage to detect output state. Refer to the hardware description in this
user’s guide for more details on the output’s electrical specification.

● If the bit patterns set on the AIO Panel do not agree with the

logic levels measured at the I/O terminals, the board is not
functioning properly. Stop here, and determine why.

● If the bit patterns set on the AIO Panel do agree with the logic

levels measured at the I/O terminals, and you have performed an
output set test for all ports, the board is functioning properly.

17. Repeat steps 13, 14, and 15 for additional output channels.

Input Read Test

A similar test of input circuitry can be performed by applying an input
signal of suitable type to each input line and verifying that the appropriate
input indicator changes state. Refer to the hardware description in this
user’s guide for more details on the input’s electrical specifications.

3-20 Installation

4

Cabling and Wiring

Warning The procedures in the section are intended for qualified service personnel.

Do not perform these procedures unless you are qualified to do so.

Users of this product must be protected from electric shock at all times.
The responsible body must ensure that users are prevented access and/or
insulated from every connection point. In some cases, connections must
be exposed to potential human contact. Product users in these
circumstances must be trained to protect themselves from the risk of
electric shock.

This section shows the cabling and connections required for attaching
accessories and I/O lines to the main I/O connector of your PDISO-8
boards. The main I/O connector is a male, 37-pin, D-type. Pin
assignments for this connector are shown in Figure 4-1.

OP0 (NO) - 19
OP0 (NC) - 18

OP1 (C) - 17
OP2 (NO) - 16
OP2 (NC) - 15

OP3 (C) - 14
OP4 (NO) - 13
OP4 (NC) - 12

OP5 - 11
OP6 - 10
OP7 - 09

IP0 - 08
IP1 - 07
IP2 - 06
IP3 - 05
IP4 - 04
IP5 - 03
IP6 - 02
IP7 - 01

37 - OP0 (C)
36 - OP1 (NO)
35 - OP1 (NC)
34 - OP2 (C)
33 - OP3 (NO)
32 - OP3 (NC)
31 - OP4 (C)
30 - OP5
29 - OP6
28 - OP7
27 - IP0
26 - IP1
25 - IP2
24 - IP3
23 - IP4
22 - IP5
21 - IP6
20 - IP7

(NO) = normally open
(C) = common
(NC) = normally closed

Figure 4-1. Pin Assignments for the Main I/O Connector

4-1

Caution: To avoid electrical damage, turn off power to the computer and

any attached accessories before making connections to PDISO-8 boards.

Attaching an STA-U or STP-37/FC

Warning Do not use the STA-U, STP-37/FC, C1800, and C-1800/M accessories at

voltages above 30V RMS, 42.4V peak, or 60VDC. These accessories are
rated for 30V RMS, 42.4V peak, or 60VDC maximum. Use at higher
voltages may result in shock hazard.

When connecting voltages up to 30V RMS, 42.4V peak, or 60VDC, only,
you may attach the PDISO-8 board to an STA-U or STP-37/FC screw
terminal accessory as follows:

● When attaching an STA-U accessory, use a C1800 cable.

● When attaching an STP-37/FC accessory, use a C-1800/M cable.

You make these connections as shown in Figure 4-2.

PDISO-8 board

C1800 cable for STA-U;

C-1800/M cable for

STP-37/FC

STA-U or

STP-37/FC

Figure 4-2. Attaching an STA-U or STP-37/FC to a PDISO-8 Board

Note: Use the STP-37/FC accessory with a C-1800/M cable for extra

protection against the possibility of personal or tool contact with signals.
All traces on these accessories are covered.

4-2 Cabling and Wiring

Attaching an STC-37

Warning Do not use the STC-37 accessory at voltages above 30V RMS, 42.4V

peak, or 60VDC. This accessory is rated for 30V RMS, 42.4V peak, or
60VDC maximum. Use at higher voltages may result in shock hazard.

The STC-37 is a screw terminal panel, as shown in Figure 4-3. The
STC-37 is intended for use at voltages up to 30V RMS, 42.4V peak, or
60VDC.

35

363734

31

32

33

28

29

30

25

26

27

22

23

24

Cable Clamp

21

201918

10

11

12

13

14

15

16

17

56789

432

1

D-Connector that connects to

the main I/O connector of a

PDISO-8 board

Figure 4-3. Layout of STC-37 Screw Terminal Connector Panel

4-3

The STC-37 connects to the main I/O connector on an PDISO-8 board as
shown in Figure 4-4. The screw terminal numbers of the STC-37
correspond to the pin numbers of the main I/O connector.

STC-37

PDISO-8 board

Figure 4-4. Attaching an STC-37 Accessory

4-4 Cabling and Wiring

Usage Information

This section describes how to obtain the safest and most reliable use of
the PDISO-8 with certain applications.

Using Relay Outputs

The relay output contacts are rated for a maximum of 3A at 28VDC or
125VAC (resistive). You should reduce these ratings for inductive loads. If
switching currents are approaching maximum ratings, add a snubber
network to minimize arcing and extend contact life. Figure 4-5 shows a
snubber network across a relay contact.

Source
Voltage

R

Snubber

Relay

Snubber Values:

2

I

------

µ F=

C

10

C

Load

Where

I = Load Current

E = Source Voltage

Figure 4-5. Adding a Snubber Network Across Relay Contacts

Five outputs are organized as Form C (change over) contacts. The
remaining three outputs are plain Form A (normally open) contacts.
Although high voltage can be switched directly by the PDISO-8 installed
in your computer, you are urged to do high-voltage switching only with a
complete understanding of the risks and hazards involved. These risks
include electric shock from accidental contact with the board inside the
computer, and possible damage to the computer through inadvertent
shorts between live circuitry to the system board (caused by foreign
objects or screw drivers, and so on). If you cannot be absolutely certain of
avoiding these situations, you are safer limiting the relay outputs of the
PDISO-8 to switching control voltage circuits (5 to 24V slave relays or
contactors for switching line power circuits).

4-5

Powering up the computer or asserting the PC bus RESET line clears the
Relay Output register, de-energizing all relays. This event provides a
defined state at power up. A soft boot of the computer ([Ctrl] + [Alt] +
[Delete]) does not produce a hardware reset of the PDISO-8; thus, the
state of the relays is unchanged by soft booting the computer.

Using Isolated Control Inputs

The PDISO-8 contains eight identical opto-isolated control input
channels. The equivalent circuit of a channel is shown in Figure 4-6. Note
that the input is first routed through a bridge rectifier, so that the
connections are not polarity sensitive whether used on AC or DC
voltages.

Non-Polarity

Sensitive

R2

3.3 kΩ

+5 V

R3

47

C1

0.1 µF

S1
Response

R1

470 Ω

Isolated Input

Figure 4-6. Equivalent Circuit of an Isolated Control Input

CMOS

CMOS

Schmitt

Schmitt

Buffer

Buffer

Data
Bus

4-6 Cabling and Wiring

Each input channel is provided with a switchable response filter. This is a
single-pole filter with a time constant of about 5ms. You must use this
filter when handling AC inputs, as these inputs periodically pass through
zero at the voltage crossings, and the logic output is not sustained at these
instants, as shown in Figure 4-7.

Volt

+5 V

0

Figure 4-7. Unfiltered Opto-Isolator Output with AC Input

Time

The filter “holds” the output long enough to prevent discontinuous logic
readings from occurring at the zero crossings of an AC signal. With DC
signals, the use of the filter is optional and can provide a useful amount of
noise rejection (for spikes or contact debouncing) at the expense of
response speed. Expect a 5 to 10ms delay when the relay turns on and off.
If the filter is not used, the channel has a response controlled mainly by
the delays in the opto-isolator; expect a “fast” response with a turn on/off
delay of around 50µs.

4-7

5

Programming

You do not program the registers of your PDISO-8 board directly through
Windows 95/98/NT. Instead, you program register changes through the
application programming interface (API) of DriverLINX. DriverLINX is
provided on the CD-ROM that comes with your board and should now be
installed on your system. (Refer to Section 3, “Installation.”) Using
DriverLINX, you can program the board in Visual C/C++, Visual Basic,
and Delphi.

DriverLINX features are summarized in Section 1. For detailed
information about DriverLINX in general and about programming with
DriverLINX specifically, refer to your DriverLINX documentation.

Note: To access the DriverLINX documents on-line, Acrobat Reader

(version 3.0 or greater) must be installed on your computer.

To access the DriverLINX documentation after you have installed it on
your computer, do the following:

1. Click the Windows 95/98/NT Start tab.

2. In the Start menu, click Programs.

3. Find the DriverLINX entry, under which you should find the On-line
Manuals entry.

4. Click on the On-line Manuals entry. The DriverLINX Printable
Documentation table of contents opens via Acrobat Reader.

5. Scroll through the DriverLINX Printable Documentation table of
contents and find the document or document category that you want.

5-1

6. Click on the wanted document or document category. Either the
selected document appears or a list of documents that fit the selected
category appears.

7. If a list appears, click on the title of the document that you want. The
desired document appears.

To access the DriverLINX documentation from the CD-ROM that came
with your board, do the following

1. In Windows Explorer, double click on X:\Drvlinx4\Docs\Toc.pdf,
where X is the drive letter of your CD-ROM drive. The DriverLINX
Printable Documentation table of contents opens via Acrobat Reader.

2. Scroll through the DriverLINX Printable Documentation table of
contents and find the document or document category that you want.

3. Click on the wanted document or document category. Either the
selected document appears or a list of documents that fit the selected
category appears.

4. If a list appears, click on the title of the document that you want. The
desired document appears.

5-2 Programming

6

Troubleshooting

Warning

The procedures in the section are intended for qualified service personnel.
Do not perform these procedures unless you are qualified to do so.

If your PDISO-8 board is not operating properly, use the information in
this section to isolate the problem. If the problem appears serious enough
to warrant technical support, refer to “Technical Support” on page 6-12
for information on how to contact an applications engineer.

Problem Isolation

If you encounter a problem with a PDISO-8 board, use the instructions in
this section to isolate the cause of the problem before calling Keithley
Hardware Applications Engineering.

Testing the I/O

If your PDISO-8 board appears not to work properly in general, skip to
the next section, “Testing the Board and Host Computer.”

However, if your PDISO-8 board seems to work in general, but not all of
the I/O bits appear to respond appropriately, you can test them without
special hardware or software. You can use the DriverLINX AIO Panel to
set the status of the relay outputs and then use an ohmmeter to check
operation of the relay outputs. You can use a low voltage power supply to
set the status of the isolated inputs and then use the DriverLINX AIO
Panel to read the inputs.

6-1

I/O Bit Tests

General Information

1. Start the AIO Panel as follows:

a. In the Start menu, click Programs .

b. Find the DriverLINX ➧ Test Panels folder, under which you

c. Click on the AIO Panel entry. The Analog I/O Panel should

should find the AIO Panel entry.

appear, similar to the example in Figure 6-1. (If you have other
DriverLINX devices installed in addition to the digital
input/output card you are testing, they will also be listed. In that
case, select the desired digital I/O card and the proper device
number before proceeding.)

Figure 6-1. An AIO Panel example

6-2 Troubleshooting

Note:

The “Driver Selection” column will show the actual DriverLINX

driver(s) you have installed.

2. On the AIO Control Panel , click the DIO tab.

Figure 6-2. DIO channel tab example

6-3

Note:

The on-screen digital I/O controller works as follows:

Channels 0 to 15 refer to the 8-bit general-purpose registers of

●

your digital input-output card. (Depending on which card is
used, the number of valid 8-bit registers will vary.) Bits
displayed on the

Panel

are numbered 0-7 for every channel. Refer elsewhere in

Digital Input Panel

and the

Digital Output

this manual for a description of the available ports and their
direction.

Invalid channels and settings appear as dark gray squares. For

●

example:

-

Non-existent channels always appear as dark gray squares.

Channels configured as inputs will appear as dark gray

-

squares on the output panel.

Valid channels and settings appear as white squares when OFF

●

and green squares when ON. (When the manual is printed in
black and white, valid channels and settings appear as white
squares when OFF and as light gray squares when ON.)

The two-digit numeric displays under Input Bits and Output

●

Bits

show the hexadecimal values of the adjacent bit patterns.

To configure a valid channel either for input or output, use the

●

Digital Channel Configuration Panel . Click on either the
Input or Output square below the channel number. Note: this

selection will be disabled for channels which are fixed as input
or output by hardware design.

●

To turn ON output-channel bits, use the Digital Output Panel .
First select the channel number of the bits to be turned on by
clicking on the appropriate square under Channels . Then, turn
ON a bit by clicking the appropriate square under Output Bits .
Turn OFF a bit in the same way.

●

To read an input-channel bit, use the Digital Input Panel . First
select the channel number to be checked by clicking the
appropriate square under Channels . Then, read the numbered
bit under

Input Bits

. OFF input bits appear as black dots and
ON input bits appear as green dots. (When the manual is
printed in black and white, OFF input bits appear as black dots
and ON input bits appear as light gray dots.)

6-4 Troubleshooting

3. Under Digital I/O Configuration Panel , configure channels as
shown in Figure 6-3. (Actual channels available will vary according
to your hardware.)

KEITHLEY

Channel Configuration

0

Input

Output

123456789101112131415

Digital I/O Configuration Panel

Figure 6-3. Configuring the digital I/O channels as inputs and outputs

Note:

For clarity when the manual is printed in black and white, the
control colors in Figure 6-3 and subsequent drawings will be shown as
follows:

Color on

Illustration

Actual Panel Function

BLACK DARK GRAY Invalid

WHITE LIGHT GRAY OFF

GRAY GREEN ON

4. In the Digital Output Panel under Channels , click on a channel

(here, channel 0 ) as shown in Figure 6-4.

KEITHLEY

Channels

1234567

0

8 9 10 11 12 13 14 15

Figure 6-4. Configuring channel 0 for output bit pattern A

5. In the Digital Output Panel under Output Bits , set the bits of the

channel as desired as shown in Figure 6-4. (Click on each bit position
to turn it ON or OFF.)

6. In the Digital Input Panel under Channels , click on a channel to

select it and display the logical state of its input lines.

Digital Output Panel

Output Bits

76 5 4 3210

55

6-5

Output Set Test

The output set test checks whether logic levels measured at all output pins
agree with output bit patterns set by software, using a DriverLINX
graphical interface (AIO Panel).

Note:

outputs.

Perform the output set test as follows:

1. Ready the following equipment:

This test is performed without user circuits being connected to the

●

A digital voltmeter (DVM) or a digital multimeter (DMM) set to
measure voltages, or a logic probe capable of reading TTL logic
levels.

A suitable accessory and cable for the board being tested.

●

2. Turn OFF the host computer.

3. Connect the cable and accessory to your board.

4. Turn ON the host computer and boot Windows 95/98/NT.

5. Click the Windows 95/98/NT Start tab.

6. Start the AIO Panel as follows:

a. In the Start menu, click Programs .

b. Find the DriverLINX ➧ Test Panels folder, under which you

should find the AIO Panel entry.

c. Click on the AIO Panel entry. The Analog I/O Panel should

appear, similar to the example in Figure 6-5. (If you have other
DriverLINX devices installed in addition to the digital
input/output card you are testing, they will also be listed. In that
case, select the desired digital I/O card and the proper device
number before proceeding.)

6-6 Troubleshooting

Figure 6-5. An AIO Panel example

7. On the AIO Panel , click the DIO tab.

To read an input-channel bit, use the Digital Input Panel . First,

Note:

select the channel number to be checked by clicking the appropriate
square under

Channels

. Then, read the numbered bit under

Input Bits

.
OFF input bits appear as black dots and ON input bits appear as green
dots. (When the manual is printed in black and white, OFF input bits
appear as black dots and ON input bits appear as light gray dots.) Further
information about this panel, how to make changes, and how to interpret
displays, is given in “I/O Bit Tests” of this section.

6-7

8. Under Digital I/O Configuration Panel , configure the output

channels to be tested as shown in Figure 6-6. (Actual output channels
available will vary according to your hardware.)

KEITHLEY

Channel Configuration

0

Input

Output

123456789101112131415

Digital I/O Configuration Panel

Figure 6-6. Configuring the digital I/O channels as inputs and outputs

Note:

In Figure 6-6 and subsequent drawings of digital I/O controller
panels, the squares below invalid channels are colored black instead of
dark gray—for clarity when the manual is printed in black and white.

9. In the Digital Output Panel under Channels , click on an output

channel (channel 0 in this example) as shown in Figure 6-7.

KEITHLEY

Channels

1234567

0

8 9 10 11 12 13 14 15

Output Bits

76 5 4 3210

Digital Output Panel

55

Figure 6-7. Configuring channel 0 for output bit pattern A

10. In the Digital Output Panel under Output Bits , set the bits of

channel 0 for bit pattern A as shown in Figure 6-7.

11. Measure the voltage between signal ground and each bit of the output

port with a DMM or DVM. Make measurements at the cabled mating
connector of your accessory.

6-8 Troubleshooting

12. Each bit set to ON in the AIO Panel should output a logic-high signal

at the corresponding I/O terminal, reading typically about 4 volts
(minimum of 2.2 volts) at a DMM/DVM. Each bit set to OFF in the
AIO Panel should output a logic-low signal at the corresponding I/O
terminal, reading typically about 0 volts (maximum of 0.8 volts) at a
DMM/DVM. Do one of the following:

Note: The typical values shown are valid for boards with TTL

compatible outputs. For boards with relay outputs (REL-16, PDISO-8,
and PIO-32) the output will be a relay contact closure. For boards with
open collector outputs (PIO-HV) use a pull up resistor to an appropriate
voltage to detect output state. Refer to the hardware description in this
user’s guide for more details on the output’s electrical specification.

● If the bit patterns set on the AIO Panel do not agree with the

logic levels measured at the I/O terminals, the board is not
functioning properly. Stop here, and determine why.

● If the bit patterns set on the AIO Panel agree with the logic levels

measured at the I/O terminals, then repeat steps 9, 10, and 11 for
remaining output channels.

13. In the Digital Output Panel under Channels, click on the output

channel to test (channel 0 in this example) as shown in Figure 6-8.

KEITHLEY

Channels

1234567

0

8 9 10 11 12 13 14 15

Figure 6-8. Configuring channel 0 for output bit pattern B

14. In the Digital Output Panel under Output Bits, set the bits of

channel 0 for bit pattern B as shown in Figure 6-8.

15. Measure the voltage between signal ground and each bit of the output

port with a DMM or DVM. Make measurements at the STA-50
terminals or the cabled mating connector that is connected to the
selected CONN-3160-D1 50-pin connector.

Digital Output Panel

Output Bits

76 5 4 3210

AA

6-9

16. Again, each bit set to ON in the AIO Panel should output a logic-

high signal at the corresponding I/O terminal, reading typically about
4 volts (minimum of 2.2 volts) at a DMM/DVM. Each bit set to OFF
in the AIO Panel should output a logic-low signal at the correspond­ing I/O terminal, reading typically about 0 volts (maximum of 0.8
volts) at a DMM/DVM.

Note: The typical values shown are valid for boards with TTL

compatible outputs. For boards with relay outputs (REL-16, PDISO-8,
and PIO-32) the output will be a relay contact closure. For boards with
open collector outputs (PIO-HV) use a pull up resistor to an appropriate
voltage to detect output state. Refer to the hardware description in this
user’s guide for more details on the output’s electrical specification.

● If the bit patterns set on the AIO Panel do not agree with the

logic levels measured at the I/O terminals, the board is not
functioning properly. Stop here, and determine why.

● If the bit patterns set on the AIO Panel do agree with the logic

levels measured at the I/O terminals, and you have performed an
output set test for all ports, the board is functioning properly.

17. Repeat steps 13, 14, and 15 for additional output channels.

Input Read Test

A similar test of input circuitry can be performed by applying an input
signal of suitable type to each input line and verifying that the appropriate
input indicator changes state. Refer to the hardware description in this
user’s guide for more details on the input’s electrical specifications.

6-10 Troubleshooting

Testing the Board and Host Computer

To isolate the problem to the PDISO-8 board or to the host computer, use
the following steps:

1. Turn the power to the host computer OFF, and remove power

connections to the computer.

Caution: Removing a board with the power ON can cause damage to

your board and/or computer.

2. While keeping connections to any accessory board intact, unplug the

accessory connector or cable from the PDISO-8 board.

3. Remove the PDISO-8 board from the computer and visually check

for damage. If a board is obviously damaged, refer to “Technical
Support” on page 6-12 for information on returning the board.

4. With the PDISO-8 board out of the computer, check the computer for

proper operation. Power up the computer and perform any necessary
diagnostics.

At this point, if you have another PDISO-8 board that is functional, you
can test the slot and I/O connections using the instructions in the next
section. If you do not have another board, refer to the instructions on page
6-12 before calling Keithley Applications Engineering.

Testing the Accessory Slot and I/O Connections

When you are sure that the computer is operating properly, test the
computer accessory slot and I/O connections using another PDISO-8 that
is functional. To test the computer accessory slot and the I/O connections,
follow these steps:

1. Remove computer power again, and install a PDISO-8 board that is

functional. Do not make any I/O connections.

2. Turn computer power ON and check operation with the functional

board in place. This test checks the computer accessory slot. If you
were using more than one PDISO-8 board when the problem
occurred, use the functional board to test the other slot, as well.

6-11

3. If the accessory slots are functional, use the functional board to check

the I/O connections. Reconnect and check the operation of the I/O
connections, one at a time.

4. If operation fails for an I/O connection, check the individual inputs

one at a time for shorts and opens.

5. If operation remains normal to this point, the problem is in the

PDISO-8 board(s) originally in the computer. If you were using more
than one board, try each board one at a time in the computer to
determine which is faulty.

6. If you cannot isolate the problem, refer to the next section for

instructions on obtaining assistance.

Technical Support

Before returning any equipment for repair, call the Keithley Hardware
Applications Engineering Department at:

1-888-KEITHLEY
Monday - Friday, 8:00 a.m. - 5:00 p.m., Eastern Time

An applications engineer will help you diagnose and resolve your
problem over the telephone. Please make sure that you have the following
information available before you call:

6-12 Troubleshooting

PDISO-8 Board
Configuration

Model
Serial #
Revision code
Base address setting
Response switch setting

___________________
___________________
___________________
___________________
___________________

Computer Manufacturer

CPU type
Clock speed (MHz)
MB of RAM
Video system
BIOS type

___________________
___________________
___________________
___________________
___________________
___________________

Operating System Windows version ___________________

Any Special Software Name

Version

___________________
___________________
___________________
___________________

Compiler
(if applicable)

Accessories Type

Language
Manufacturer
Version

Type
Type

___________________
___________________
___________________

___________________
___________________
___________________

If a telephone resolution is not possible, the applications engineer will
issue you a Return Material Authorization (RMA) number and ask you to
return the equipment. Include the RMA number with any documentation
regarding the equipment.

When returning equipment for repair, include the following information:

● Your name, address, and telephone number.

● The invoice or order number and date of equipment purchase.

● A description of the problem or its symptoms.

● The RMA number on the outside of the package.

6-13

Repackage the equipment, using the original anti-static wrapping, if
possible, and handling it with ground protection. Ship the equipment to:

ATTN: RMA #_______

Repair Department

Keithley Instruments, Inc.

28775 Aurora Road

Cleveland, Ohio 44139

Telephone 1-888-KEITHLEY

FAX [phone]

Notes: If you are submitting your equipment for repair under warranty,

you must include the invoice number and date of purchase.

To enable Keithley to respond as quickly as possible, you must include
the RMA number on the outside of the package.

6-14 Troubleshooting

Specifications

Tables A-1 to A-4 list the specifications for the PDISO-8 board.

Table A-1. Output Specifications

Feature Specification

Contact rating 3A @ 125VAC or 28VDC resistive, Installation Category I*

Contact type Silver alloy

Contact resistance 100mΩ maximum (initial)

Contact arrangement Channels OP0 to OP4 are SPDT (Form C changeover)

Channels OP5 to OP7 are SPST (Form A normally open)

Operate time 20ms maximum

A

Release time 10ms maximum

Life expectancy Mechanical: 10 million operations minimum

Electrical: 100,000 operations minimum @ full load

*Voltage source must be isolated from the mains by a transformer.

A-1

Table A-2. Isolated Control Input Specifications

Feature Specification

Type Nonpolarized, opto-isolated (inputs are not TTL/CMOS compatible),

Installation Category I*

Number Eight lines

Input voltage range 5 to 24VDC or AC (50 to 1000Hz)

Input resistance 470Ω minimum

Response time 50µs (typical) without filter

10ms (typical) with filter

*Voltage source must be isolated from the mains by a transformer.

Table A-3. General Environmental Specifications

Feature Specification

Operating temperature range 0 to 50˚C

Storage temperature range −20 to +70˚C

Humidity 0 to 90% non-condensing

Weight 7.5 oz (213 gm)

Table A-4. Power Consumption Specifications

Feature Specification

+5V supply 0.3A typical all relays off

1.0A typical/1.3A maximum all relays on

+12V supply Not used

−12V supply Not used

Power dissipation 5W typical

A-2 Specifications

B

Connector Pin Assignments

The connection between an external I/O device and a PDISO-8 board is
made at the main I/O connector, which is a standard 37-pin, D-type male
connector. The mating connector is a 37-pin, D-type female connector
(part# SFC-37). Figure B-1 illustrates pin assignments of the main I/O
connector.

(NO) = normally open
(C) = common

OP0 (NO) - 19

OP0 (NC) - 18

OP1 (C) - 17

OP2 (NO) - 16

OP2 (NC) - 15

OP3 (C) - 14

OP4 (NO) - 13

OP4 (NC) - 12

OP5 - 11
OP6 - 10
OP7 - 09

IP0 - 08
IP1 - 07
IP2 - 06
IP3 - 05
IP4 - 04
IP5 - 03
IP6 - 02
IP7 - 01

37 - OP0 (C)
36 - OP1 (NO)
35 - OP1 (NC)
34 - OP2 (C)
33 - OP3 (NO)
32 - OP3 (NC)
31 - OP4 (C)
30 - OP5
29 - OP6
28 - OP7
27 - IP0
26 - IP1
25 - IP2
24 - IP3
23 - IP4
22 - IP5
21 - IP6
20 - IP7

(NC) = normally closed

Figure B-1. Main I/O Connector Pin Assignments

B-1

C

Register Maps

Note: Address maps are provided here only for background reference

purposes. You do not program registers directly in Windows 95/98/NT.
Instead, you program register changes through the application
programming interface (API) of DriverLINX, which is provided on the
CD-ROM that comes with your board. Refer to the DriverLINX
documentation that is installed on your system. (If is not yet installed, you
can find it on the CD-ROM in the X:\DrvLINX4\Docs and
X:\DrvLINX4\Docs\Notes folders, where X is the drive letter of the
CD-ROM drive.)

In some cases the base address is chosen automatically by Windows.
Check the difference in addressing for Windows 95/98 and Windows NT.
Refer to “Configuring the PIO Series” in Using DriverLINX with Your
Hardware—Keithley PIO Series manual, which you printed in step 9 of
“Installing DriverLINX Software and Documentation” on page 3-3.

A PDISO-8 board occupies four consecutive addresses in the computer’s
I/O space; only the first two of these addresses are actually used. The base
address automatically falls on a 4-byte boundary.

C-1

The I/O map and functions of the four addresses are shown in Table C-1.

Table C-1. I/O Map and Functions

I/O Address Function Read/Write

Base address +0h Relay outputs R/W

Base address +1h Isolated control inputs R

Base address +2h Not used —

Base address +3h Not used —

All ports are 8-bits (1-byte) wide and require byte-oriented, read/write
operations rather than word (16-bit) operations.

Relay Output Register Data Format

Data are written to all eight relays as a single byte. Each of the eight bits
within a byte controls a single relay. A high bit (equal to 1) energizes
(closes the contacts of) a relay while a low bit (equal to 0) turns the relay
off.

This register is read to determine the state of the relays. A high bit
indicates that a relay is energized while a low bit indicates that the relay is
off.

Relay Output register bits are assigned as shown in Table C-2.

Table C-2. Relay Addresses in the Relay Output Register

Address Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

Base Address +0h OP7 OP6 OP5 OP4 OP3 OP2 OP1 OP0

For example, to energize the relay controlling OP4 of a PDISO-8 board at
a base address of 300h, 00010000 binary (10h) is written to I/O address
300h.

C-2 Register Maps

Isolated Control Input Register Data Format

The digital control input states are read as a single byte from the port at
base address +1h. Each of the eight bits within the byte corresponds to a
particular digital input so that a high bit (equal to 1) energizes an input
while a low bit (equal to 0) de-energizes the input. Register bits are
assigned as shown in Table C-3.

Table C-3. Input Addresses in the Isolated Control Input Register

Address Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0

Base Address +1h IP7 IP6 IP5 IP4 IP3 IP2 IP1 IP0

C-3

Index

A

accessory

STA-U 1-3, 4-2
STC-37 1-3, 4-3
STP-37/FC 1-3, 4-2

AIO Panel

checking installation with 3-11

starting 3-11
anti-static wrapper 3-7
Applications Engineering 6-12
applications, PDISO-8 1-1
attaching

STA-U 4-2

STC-37 accessory 4-3

B

base address switch 3-8, 3-9, C-1
block diagram, PDISO-8 2-1
board

grounding during handling to protect 3-7

handling 3-7

connector pin assignments B-1
connector, main I/O 4-1, B-1
contact life, extending 4-5
contacts

Form A 2-2, 4-5
Form C 2-2, 4-5

D

data format

isolated control input register C-3
relay output register C-2

diagram

isolated control input 4-6
opto-isolator output 4-7
PDISO-8 2-1

documentation, DriverLINX

accessing 3-5, 5-1

installing 3-3
documentation, this manual, installing 3-3
DriverLINX

configuring 3-6

description 1-2

documentation, accessing 3-5, 5-1

documentation, installing 3-3

installing 3-3

programming 5-1

C

cable

C1800 1-3, 4-2

C-1800/M 1-3, 4-2
cabling and wiring 4-1
checking the installation 3-11
computer I/O space C-1
computer resources

determination for installation 3-2
configuration 3-8
configuring

DriverLINX 3-6

installation 3-6

E

extend contact life 4-5

F

features, PDISO-8 1-1
filter, response 2-2

G

grounding

handling to protect board 3-7
to protect board 3-7

X-1

I

R

I/O bit tests 3-12, 6-2

general information 3-12, 6-2

input read test 3-20, 6-10

output set test 3-16, 6-6
I/O map C-2
I/O testing 6-1
installation

checking 3-11

configuring 3-6

resource inventory 3-2
installing

board 3-11

documentation 3-3

software, DriverLINX 3-3
instructions, safety 3-2
interfaces

installing for applications 3-3

M

main I/O connector B-1
manuals, DriverLINX

accessing 3-5, 5-1

installing 3-3
map, I/O C-2
maps, register C-1

P

PDISO-8 testing 6-1
pin assignments, main I/O 4-1
polarity-sensitive 2-2
precautions, installation

board 3-7

DriverLINX before board 3-1
problem isolation 6-1
programming

DriverLINX 5-1

overview 1-2

registers 5-1

registers

maps C-1

programming 5-1
repairs, warranty 6-14
resources, installation, inventory 3-2
response filter 2-2
response switch 3-8, 3-10
returning equipment 6-13
RMA number 6-13

S

safety instructions 3-2
software, DriverLINX

description 1-2

installing 3-3

programming 5-1
SPDT contacts 2-2
specifications

general environment A-2

isolated control input A-2

power consumption A-2

relay A-1
SPST contacts 2-2
STA-U accessory 1-3
STA-U, attaching 4-2
STC-37 accessory 1-3
STC-37, attaching 4-3
STP-37/FC accessory 1-3
STP-37/FC, attaching 4-2
switch

base address 3-8, 3-9

response 3-8, 3-10

T

technical support 6-12

X-2 Index

U

W

usage information 4-5

warranty repairs 6-14
wrapper, anti-static 3-7

X-3

Specifications are subject to change without notice.
All Keithley trademarks and trade names are the property of Keithley Instruments, Inc. All other trademarks and

trade names are the property of their respective companies.

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Printed in the U.S.A.

4/02