Pickering SYSTEM 10 User manual

Page (1)
DIGITAL I/O MODULE 20-410
pickering
Issue 4.1 July 2019
User Manual
GPIB Digital Input/Output Module
(Model No. 20-410)
pickeringtest.com pickering
SYSTEM 10/20
*Please contact Pickering for alternative
PXI/LXI/USB solutions
*

Page (II) DIGITAL I/O MODULE 20-410
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Page (II) REED RELAY MODULE 40-110/115/120/125
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© COPYRIGHT (2019) PICKERING INTERFACES. ALL RIGHTS RESERVED.
No part of this publication may be reproduced, transmitted, transcribed, translated or stored in any form, or by
any means without the written permission of Pickering Interfaces.
Technical details contained within this publication are subject to change without notice.
ISO 9001
Reg No. FM38792

Page (III)
DIGITAL I/O MODULE 20-410
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Page (III)
REED RELAY MODULE 40-110/115/120/125
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TECHNICAL SUPPORT
For Technical Support please contact Pickering Interfaces either by phone, the website or via e-mail.
WARRANTY
All products manufactured by Pickering Interfaces are warranted against defective materials and workmanship for a period of
three years, excluding programmable power supplies, from the date of delivery to the original purchaser. Any product found to be
defective within this period will, at the discretion of Pickering Interfaces be repaired or replaced.
Products serviced and repaired outside of the warranty period are warranted for ninety days.
Extended warranty and service are available. Please contact Pickering Interfaces by phone, the website or via e-mail.
ENVIRONMENTAL POLICY
Pickering Interfaces operates under an environmental management system similar to ISO 14001.
Pickering Interfaces strives to full all relevant environmental laws and regulations and reduce wastes and releases to the
environment. Pickering Interfaces aims to design and operate products in a way that protects the environment and the health and
safety of its employees, customers and the public. Pickering Interfaces endeavours to develop and manufacture products that can
be produced, distributed, used and recycled, or disposed of, in a safe and environmentally friendly manner.
Worldwide Technical Support and Product Information
pickeringtest.com
Germany
Tel: [phone]
E-mail: [email protected]
Sweden
Tel: [phone]
E-mail: [email protected]
USA
Tel: (West) [phone]
Tel: (East) [phone]
E-mail: [email protected]
Czech Republic
Tel: [phone]
E-mail: [email protected]
France
Tel [phone]
E-mail [email protected]
Pickering Interfaces Headquarters
Stephenson Road Clacton-on-Sea CO15 4NL United Kingdom
Tel: [phone]
E-Mail: [email protected]
China
Tel: [phone]
E-mail: [email protected]

Page (IV) DIGITAL I/O MODULE 20-410
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Page (IV) GENERAL PURPOSE REED RELAY MODULE 10-110/115/120/125
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Page (IV) REED RELAY MODULE 40-110/115/120/125
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MEANING / DESCRIPTION SYMBOL
PROTECTIVE EARTH (GROUND)
To identify any terminal which is intended for connection to an external conductor for
protection against electric shock in case of a fault, or the terminal of a protective earth
(ground) electrode.
DANGEROUS VOLTAGE
To indicate hazards arising from dangerous voltages.
WARNING / CAUTION
An appropriate safety instruction should be followed or caution to a potential hazard
exists.
Refer to the relevant instructions detailed within the product manual.
HEAVY
If this product is heavy reference should be made to the safety instructions for
provisions of lifting and moving.
STATIC SENSITIVE
To indicate that static sensitive devices are present and handling precautions should
be followed.
!
kg
SAFETY SYMBOLS
PRODUCT SAFETY
The following safety symbols may be used on the product and throughout the product documentation.

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DIGITAL I/O MODULE 20-410
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Copyright Statement ...................................................................II
Technical Support and Warranty................................................III
Product Safety .............................................................................IV
Contents (this page)....................................................................V
Warnings and Cautions ..............................................................VII
Section 1
Technical Specication...............................................................1.1
Section 2
Technical Description .................................................................2.1
Functional Description..........................................................2.1
Section 3
Installation....................................................................................3.1
Pre-Operation Checks...........................................................3.1
Hardware Installation ............................................................3.1
Software Installation .............................................................3.3
Self-Test..................................................................................3.3
Section 4
Programming Guide....................................................................4.1
Programming the Module .....................................................4.1
Section 5
Connector Information................................................................5.1
Section 6
Trouble Shooting.........................................................................6.1
Section 7
Maintenance Information............................................................7.1
PCB and Component Layout................................................7.2
CONTENTS
Please use the hyperlinked text to navigate to the page required

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Page (VII)
DIGITAL I/O MODULE 20-410
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Page (VII)
GENERAL PURPOSE REED RELAY MODULE 10-110/115/120/125
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WARNINGS AND CAUTIONS
WARNING - HAZARDOUS ENVIRONMENTS SYMBOL
This product is not specically designed for use in hazardous environments, for example in explosive
atmospheres. If the product is to be used in hazardous environments we recommend that the user
ensures suitable protective measures are taken.
!
WARNING - DANGER OF ELECTRIC SHOCK SYMBOL
This module may contain hazardous voltages. Before removing the module from the rack remove all
supplies and disconnect user I/O signals.
Unused slots in the System 10/20 chassis are populated with blanking plates to prevent access
to user I/O signals that may be present. Blanking panels are available to order from Pickering in a
variety of slot widths. If the product is not used in this manner for example by using an extender card
then additional care must be taken to avoid contact with exposed signals.
CAUTION - HANDLING OF ELECTROSTATIC-SENSITIVE DEVICES SYMBOL
Certain semiconductor devices used in this equipment are liable to damage due to static voltage.
Observe the following precautions when handling these devices in their unterminated state, or
sub-assemblies containing these devices:
1. Persons removing sub-assemblies from equipment using these devices must be earthed by a
wrist strap and a resistor at the point provided on the equipment.
2. Soldering irons used during the repair operations must be low voltage types with earthed tips and
isolated from the mains voltage by a double insulated transformer.
3. Outer clothing worn must be unable to generate static charges.
4. Printed Circuit Boards (PCBs) tted with these devices must be stored and transported in
anti-static bags.
CAUTION - PRODUCT DOCUMENTATION SYMBOL
Suitably qualied & trained users should ensure that the accompanying documentation is fully read
and understood before attempting to install or operate the product.
!
SAFETY INSTRUCTIONS
SAFETY INSTRUCTIONS
All cleaning and servicing requires the equipment to be isolated and disconnected from the power source and user I/O
signals (refer to the Maintenance Section).
• Appropriate manual handling procedures should be followed as dictated by the weight of the individual module or
the combined weight of the modules & chassis.
• Should a fault occur with the module or chassis, immediately isolate and disconnect the incoming power to the
chassis and the user I/O signals.
• Ensure the equipment is installed, operated and maintained by trained and authorised personnel.

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Page 1.1
DIGITAL I/O MODULE 20-410
pickering SECTION 1 - TECHNICAL SPECIFICATION
SECTION 1 - TECHNICAL SPECIFICATION
pickeringtest.com
GPIB Digital Input/Output Module 20-410
ISSUE 5.2 JUL 2019
• Up to 128-Bits of Digital Input and Output in
One Module
• TTL Compatible Digital Inputs
• Choice of TTL or Open-Collector Digital
Outputs
• Open-Collector Outputs Suitable For Driving
Relay Coils.
• Programmable by Bit Byte or Word
• Front Panel Status Indicators
• Built-in Self Test
20-410 Digital Input/Output Module
1
2
64
DIGITAL
OUTPUTS
1
2
64
DIGITAL
INPUTS
SYSTEM 20 BACKPLANE
Diagram for the 20-410-041 Digital Input/Output
Module With 64-Bits of I/O
The 20-410 Digital Input/Output Modules offer a choice of port
congurations up to a maximum of 128-bits. Modules can be
specied as all inputs, all outputs or a combination of both.
All inputs are compatible with TTL voltage levels and are suitable
for receiving signals from logic circuits or sensors with TTL level
outputs. Outputs can be specied as either TTL, suitable for driving
standard logic, or Open-Collector, for driving higher current loads
such as relay coils. The Open-Collector option can tolerate up to
50V and sink up to 500mA of current.
The module is programmed by writing and reading data at bit, byte
or word level, this simplies the interfacing operation. Applications
include; generating control signals, stimulus and sensing status
from digital devices.
Typical Applications
• Construction of special one-off circuits
• Programmable ampliers
• Programmable attenuators
• Programmable lters
• Special circuits to drive external relays
• Mounting special relay types
• Dummy multiplexer channels for calibration purposes
*Please contact Pickering for alternative
PXI/LXI/USB solutions
*

Page 1.2 DIGITAL I/O MODULE 20-410
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SECTION 1 - TECHNICAL SPECIFICATION
Digital Input/Output Module – 20-410
pickeringtest.com
Specifications
Specification - TTL Output Drivers
Maximum drive capability: 15 TTL inputs.
Current drive Sink: 10mA max
Current Source: 0.4mA max
Max Voltage: 7V
Total Operate/Release Time: 7ms
Safety & CE Compliance
All modules are fully CE compliant and meet applicable EU
directives: Low-voltage safety EN61010-1:2010, EMC Immunity
EN61326-1:2013, Emissions EN55011:2009+A1:2010.
Operating/Storage Conditions
Operating Conditions
Operating Temperature:
Humidity:
Altitude:
0°C to +55°C
Up to 95% non-condensing
5000m
Storage and Transport Conditions
Storage Temperature:
Humidity:
Altitude:
-20°C to +75°C
Up to 95% non-condensing
15000m
Specification - Open Collector Transistor Drivers
Maximum Standoff Voltage: 50V
Power per O/P: 1.0W max
Power per byte: 1.6W max
Current Drive: 500mA max.
Total Operate/Release Time: 7ms
Specification - Digital Inputs
Maximum Standoff Voltage: 7V
Input Current: Iih = 20mA, Iil = -0.4mA
Pull up resistor: 10kΩpulled up to 5V
Nominal True voltage: >2.0V
Nominal false voltage: <0.8V
Programming
The module uses a standard IEEE-488.2/RS-232 message based
interface and is programmed via the System 20 backplane. The I/O
ports are programmable by bit, byte or word.
Self Test
The module has a built in self-test that is executed at power on or
invoked by a software command. The test checks internal logic,
checks power supply levels and tests the output drivers. The result
of the test is indicated on the front panel LEDs.
Mechanical Characteristics
All modules conform to the 6U height (128mm) Eurocard standard
and are 160mm deep. Panel width for all versions is 2.4 Inches.
Connectors
• System 20 bus: 64-Pin DIN 41612 plug
• Digital input/output: 2 x 64-Pin DIN 41612 plugs on
front panel (20-410)
Note: Alternative connectors are available to order, please contact
the sales ofce for details.

Page 1.3
DIGITAL I/O MODULE 20-410
pickering SECTION 1 - TECHNICAL SPECIFICATION
Digital Input/Output Module – 20-410
pickeringtest.com
Ordering Information
© Copyright (2019) Pickering Interfaces. All Rights Reserved Pickering Interfaces maintains a commitment to continuous product development, consequently we reserve the right to vary from the description given in this data sheet.
Product Customization
Pickering System 20 modules are designed and manufactured
on our own exible manufacturing lines, giving complete product
control and enabling simple customization to meet very specic
requirements.
Customization can include:
• Different performance specications
All customized products are given a unique part number, fully
documented and may be ordered at any time in the future. Please
contact your local sales ofce to discuss.
Product Order Codes
Digital Input/Output Module
(2 x DIN 41612 Front Panel Connectors)
32-Bit Input/Output
32-Bit Input/Output - Open Collector
64-Bit Output
64-Bit Output - Open Collector
64-Bit Input
64-Bit Input/Output
64-Bit Input/Output - Open Collector
128-Bit Output
128-Bit Output - Open Collector
128-Bit Input
20-410-021
20-410-021-O
20-410-022
20-410-022-O
20-410-023
20-410-041
20-410-041-O
20-410-042
20-410-042-O
20-410-043
Mating Connectors & Cabling
DIN 41612 Connector Crimp Pin
DIN 41612 Connector IDC Socket
10-967-001
10-967-101

Page 1.4 DIGITAL I/O MODULE 20-410
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SECTION 1 - TECHNICAL SPECIFICATION
Mechanical Specications
Voltage Supplies
Logic Supply 5Vdc ±5%.
† Approx. dimensions. Standard 160mm Eurocard.
20-410
96W Ziff or DIN41612 Connectors
Approx. Weight 1.1kg
Dimensions (mm) 6U Eurocard as specied, for details
consult the factory.
Front Panel Width 60
Height 268
Overall Length † 189
Precautions
Care must be taken when interfacing the 20-410 modules with external circuits that may produce high voltage
spikes or RF interference. Additional noise protection may be required, please contact Pickering if you wish to
discuss your requirement.
Former Products
Please note that manufacture has now ceased for the associated product versions listed below. Should you
require any information related to them please contact the factory.
Product Order Codes
Breadboard Module With Digital Input/Output
(2 x 96-Way ZIF Front Panel Connectors)
2 x 16-Bit Input/Output 20-210A-021
2 x 16-Bit Input/Output - Open-Collector 20-210A-021-O
2 x 32-Bit Input/Output 20-210A-022
2 x 32-Bit Input/Output - Open-Collector 20-210A-022-O
2 x 32-Bit Input 20-210A-023
4 x 16-Bit Input/Output 20-210A-041
4 x 16-Bit Input/Output - Open-Collector 20-210A-041-O
4 x 32-Bit Output 20-210A-042
4 x 32-Bit Output - Open-Collector 20-210A-042-O
4 x 32-Bit Input 20-210A-043

Page 2.1
DIGITAL I/O MODULE 20-410
pickering SECTION 2 - TECHNICAL DESCRIPTION
SECTION 2 - TECHNICAL DESCRIPTION
FUNCTIONAL DESCRIPTION
TO FRONT
PANEL
BASE
BOARD
CONNECTOR J1
FRONT PANEL CONNECTORS
CONTROL
SIMM
DIGITAL I/O
SIMM CARDS
STATUS
LEDs
Bits 1-32 Slot 1
Bits 33-64 Slot 2
Bits 65-96 Slot 3
Bits 97-128 Slot 4
Figure 2.1 - Digital I/O Module: Functional Block Diagram
A Functional Diagram is provided in Figure 2.1. The Module is powered by a +5V input via the 64 way Backplane
connector J1. The interface to the user test equipment is via the two front panel mounted 64 Way DIN connectors.
The module comprises a Microprocessor Control SIM card and Digital I/O SIM cards.
The Microprocessor Control SIM card (Figure 2.2) accepts control signals from the backplane connector J1. These
signals are processed by microprocessor U1 and distributed around the card. Control signals generated by the
Microprocessor Control SIM card are applied to the Digital I/O SIM cards (Figure 2.3), which, depending on the
module conguration, i.e. 64 bit I/O, 128 bit In or 128 bit Out set the I/O as required at the relevant connectors.
The RS232 port located on the Microprocessor Control SIM card is primarily used to change the address of the
module.

Page 2.2 DIGITAL I/O MODULE 20-410
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SECTION 2 - TECHNICAL DESCRIPTION
Figure 2.3 -Digital I/O Card Functional Diagram (A/PC/185)
TO/FROM
MICROPROCESSOR
SIM CARD U1
U2
U3
U4
U5
BUFFERS DRIVERS
SLOT CONNECTOR
TERMINATING
RESISTORS
U6
U7
U8
U9
EEPROM
(If Fitted)
CARD
LATCHING
BUFFER
U6
ADDRESS
DECODING
BUFFER
U5
FLASH
MEMORY
U7
MEMORY
ADDRESS
DECODING
READ/
WRITE
DECODING
RESET
CONTROL
U2
MICROPROCESSOR
U1
CHIP
SELECT
DECODING
U8
RS232
PORT
RS232
LINE
DRIVER
U4
SPI
BUFFERS
TO/FROM
I/O
MODULE
TO/FROM
BACKPLANE
TO/FROM
BACKPLANE
TO/FROM
BACKPLANE
LED
BUFFER
U9
CONTROL
BUFFER
U10
RELAY
SUPPLY
Q1, Q2
CONTACT
TEST
TO LEDs
Figure 2.2 -SIMM Controller Functional Diagram (A/PC/178)

Page 3.1
DIGITAL I/O MODULE 20-410
pickering SECTION 3 - INSTALLATION
Page 3.1
GENERAL PURPOSE REED RELAY MODULE 20-110/115/120/125
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SECTION 3 - INSTALLATION
Power Supply
with
Interface Module
above
6U System 20 Modules
(Not position dependent)
3U System 10 Modules
(Not position dependent)
kg
PRE-OPERATION CHECKS (UNPACKING)
1. Check the module for transport damage and report any damage immediately to Pickering Interfaces.
Do not attempt to install the product if any damage is evident.
2. Position the chassis relative to any other equipment the module(s) will connect with. Ensure the chassis is not
connected to the electrical supply.
3. Ensure that the designated area for the chassis containing the module is of at and solid construction to
withstand and support the combined weight of the module(s) and chassis.
!
Refer to the Warnings and Cautions at the front of this manual
Modular products require installation in a suitable System 10/20 chassis.
The module is designed for indoor use only.
!
HARDWARE INSTALLATION
ELECTRICAL CONNECTION (CHASSIS)
1. The chassis must be electrically installed in accordance with local regional electrical codes by a qualied
engineer.
2. Ensure the power supply lead provides the necessary integrity of chassis ground.
Electrostatic discharge can damage the components on the module. To avoid such damage in handling the
board refer to page VII.
Ensure that there is adequate ventilation.
Figure 3.1 - System 10/20 Front Access Case Split 24/60 with Various Modules Fitted.

Page 3.2 DIGITAL I/O MODULE 20-410
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SECTION 3 - INSTALLATION
Page 3.2 GENERAL PURPOSE REED RELAY MODULE 20-110/115/120/125
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SECTION 3 - INSTALLATION
Figure 3.2 - Module Guide Rail Position
Figure 3.3 - A Partially Built System 20 Front Access Chassis
!
MODULE INSTALLATION
The module should be installed in accordance with the following procedure:
1. Ensure that the system is turned OFF but still connected to mains so that it remains grounded.
2. If the module has address switches ensure they are set to the appropriate position. (See Section 4).
Note individual modules are not sent out with a system drawing detailing their address.
3. Choose an appropriate slot in the rack and remove the blanking plate (if tted).
(See the Pickering 10-910M IEEE-488 GPIB System 10/20 Ancillaries manual for further details).
(When tted, additional modules will be automatically recognised by the interface card. See Figure 3.1).
4. If necessary t the module guide rails as supplied with the module to both the top and bottom of the chassis
in that slot position. One guide rail slot should be to the left of the connector as shown in Figure 3.2.
5. Align the module with the backplane and screw holes at the front of the chassis.
Hold the handle whilst slowly sliding the module into the card guides until the module seats rmly into the
backplane. See Figure 3.4. The front panel of the module should be ush with the front or rear panel of the
chassis.
6. Screw the front panel of the module to the chassis front panel mounting rails.
7. Ensure all necessary modules including the power supply are tted to the rack and other slots blanked off
before powering up.
To achieve the correct initialisation of the sytem, ensure any slave chassis are powered up before the master
chassis.

Page 3.3
DIGITAL I/O MODULE 20-410
pickering SECTION 3 - INSTALLATION
Page 3.3
GENERAL PURPOSE REED RELAY MODULE 20-110/115/120/125
pickering SECTION 3 - INSTALLATION
Figure 3.4 - Module Insertion in a Pickering 20-935A-001 Front Access Chassis
SOFTWARE INSTALLATION
Refer to the Pickering manual 10-921M.
For the latest version of the driver please refer to our web site pickeringtest.com where links to our Software
Download page will provide the driver software for the various programming environments encountered.
SELF-TEST FUNCTION
Self-Test is invoked at power on and may also be operated under software control using the *TST? command. Self-
Test pass is indicated on a front panel LED with a full pass/fail description is available using the DIAGNOSTIC?
command.
The Self-Test consists of a 1 level test, see Figure 3.5:
1. Logic Test: Checks all logic including on-board microprocessor, relay drivers etc.
Self-Test Operation
If self test is run under software control it will rstly clear the whole module .
When the self-test has nished the relays will be returned to an all clear state (i.e. the previous state will not be
remembered!).
Detailed Self Test Reporting using the DIAGNOSTIC? Query
The DIAGNOSTIC? query will give an ASCII string detailing any self test failures. These will include:
Logic: Microprocessor, RAM, EPROM, Relay Drivers, Invalid Link Settings etc.
This string is not intended to be processed by the user’s software, it is suitable for copying directly onto the screen
of your control computer. This information will then indicate maintenance required (please contact Pickering for
further help).

Page 3.4 DIGITAL I/O MODULE 20-410
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SECTION 3 - INSTALLATION
Figure 3.5 - Self-Test: Basic Flow Diagram
SELF TEST INITIATED BY:
• POWER ON
• *
TST? QUERY
• MANUAL BUTTON
CLEAR MODULE
LOGIC TEST:
• MICROPROCESSOR BOARD
• RELAY BOARD
LOGIC TEST
FAIL ?
RELAY COIL
TEST FAIL ?
RELAY COIL TEST
SELF TEST PASS
SELF TEST FAIL:
• ERROR LED ON
• USE DIAGNOSTIC?
COMMAND TO GET
ERROR MESSAGE
Yes
No
Yes
No

Page 4.1
DIGITAL I/O MODULE 20-410
pickering SECTION 4 - PROGRAMMING GUIDE
SECTION 4 - PROGRAMMING GUIDE
Selecting the Module Address
PROGRAMMING THE MODULE
Figure 4.1 - A USB/GPIB Interface Lead
Programming Using the Intelligent GPIB/RS-232 Interface
The programming computer will need a GPIB card, a USB to GPIB Interface (Figure 4.1), an RS-232 or Ethernet
connection to talk to the interface and communicate with the system depending on the type of interface tted.
• A 10-921-001 Interface requires either a GPIB or RS-232 connection.
• A 10-922-001 Interface requires an Ethernet connection.
The module internal address is factory pre-set however this can be recongured through the software as required.
The 20-410 module is simple to program either by single bit or by word.
ARESET a Clear all outputs on module a
CLOSE a,b Set bit number b on module a
DELAY t Force a minimum delay of t milliseconds between two instructions
OPEN a,b Clear bit number b on module a
RESET Clear all bits/switches on all modules
READ? a,c Read word from module a block position c (word size is set with the SIZE command)
READ? a,c,b Read bit b from module a block position c
SIZE s Species the word size: s=1 for byte, s=2 for 16 bit word (default), s=3 for 32 bit word
VIEW? a[,b] View status of module a, can be viewed at any time either as a word or by bit b as a logical
value (1 or 0)
WRITE a,c,w Send word w to module a block position c (word size is set with the SIZE command)
The module is programmed as an 8 bit output port using either single bit, byte (8 bits), 16 or 32 bit words:
To set bit number 55 on module 11.
CLOSE 11,55
Or to close the rst 16 bits on module 9.
SIZE 2 (this selects byte length words)
WRITE 8,1,65535
For more details on programming see the manual for the IEEE-488/RS-232 interface module.

Page 4.2 DIGITAL I/O MODULE 20-410
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SECTION 4 - PROGRAMMING GUIDE
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