Solartron Digital Input/Output Module User manual

Digital Input/
Output Module
solartron
Manual No. 502237
Issue 2
DIOM 502237_Issue 2.qxd 20/07/2005 15:38 Page fcov1

Part No. 502237 Issue 2
Information in this document is subject to change without notice. Companies, names and data used
in examples herein are fictitious unless noted otherwise. No part of this document may be
reproduced or transmitted in any form or by means, electronic or mechanical, for any
purpose, without the express permission of Solartron Metrology.
© 2000 Solartron Group Ltd. All rights reserved.
Orbit is a trademark of Solartron Group Ltd
All other brand names, product names or trademarks belong to their respective holders.
DIOM 502237_Issue 2.qxd 20/07/2005 15:38 Page fcov2

1.0 Introduction
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . .3
THIS MANUAL . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
SAFETY SUMMARY . . . . . . . . . . . . . . . . . . . . . . .4
WARNINGS: . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
2.0 Detail Specification
DIOM GENERAL SPECIFICATION . . . . . . . . . . . .5
EMC Compliance . . . . . . . . . . . . . . . . . . . . . . .6
IP Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
PIN CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . .7
I/O Port: Input Specification . . . . . . . . . . . . . . .9
I/O Port: Output Specification - Driver
Configuration External Supply . . . . . . . . . . . . .10
0 V connections: Pins 9 to 12 DIOM
connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
I/O Port: Output Specification - Driver
Configuration Using Orbit Supply . . . . . . . . . .12
I/O Port: Output Specification - Logic
Configuration . . . . . . . . . . . . . . . . . . . . . . . . . .13
3.0 Communication with the DIOM
ORBIT COMMANDS . . . . . . . . . . . . . . . . . . . . . . .14
4.0 Application - Hardware
CONNECTING TO THE DIOM. . . . . . . . . . . . . . .20
EMC IMMUNITY ENHANCEMENT
SUGGESTIONS . . . . . . . . . . . . . . . . . . . . . . . . . .21
5.0 Application - Software
INPUT / OUTPUT CONTROL . . . . . . . . . . . . . . . .22
MULTIPLE READINGS . . . . . . . . . . . . . . . . . . . . .24
Return of Goods
Index 1Manual No. 502237 Issue 2
Index
DIOM 502237_Issue 2.qxd 20/07/2005 15:38 Page 1

Introduction
The Digital Input / Output Module (DIOM) enables the
'Orbit Network' to interface with the outside world. The
module provides 8 general-purpose input / output lines,
housed in the standard Orbit Module case. Each line
can be individually configured to Input or Output.
Input / Output line are connected via a 0.5-meter flying
lead and a 15-way D-type connector.
This Manual
The manual describes the technical specification of the
product enabling you to connect to the DIOM. All
communication with the DIOM, including configuration
of the unit, is carried out using the 'Orbit Command'
language, which is described in detail in this manual.
1.0: Introduction
1.0: Introduction 2Manual No. 502237 Issue 2
DIOM 502237_Issue 2.qxd 20/07/2005 15:38 Page 2

Safety Summary
WARNING statements identify conditions or practices
that could result in personal injury or loss of life.
CAUTION statements identify conditions or practices
that could result in damage to the equipment or other
property.
Symbols in this document:-
This symbol indicates where applicable
cautionary or other information is to be found.
WARNINGS:
Do not operate in an explosive atmosphere
To avoid explosion, do not operate this equipment in an
explosive atmosphere.
This equipment is not intended for use in safety critical
applications.
Do not exceed rated voltages
This equipment is designed to interface to a maximum
of 30 V dc.
1.0: Introduction
1.0: Introduction 3Manual No. 502237 Issue 2
DIOM 502237_Issue 2.qxd 20/07/2005 15:38 Page 3

CAUTION:
Failure to observe the limits in this specification
could result in damage to this equipment and
any equipment connected to it.
NOTES:
This equipment contains no user serviceable parts.
This equipment must be returned to a Solartron Dealer
for all service and repair.
Low Voltage
This equipment operates at below the SELV and is
therefore outside the scope of the Low Voltage
Directive.
DIOM General Specification
Module Temperature:
-20°C to + 70°C (-4°F to 158°F)
except where specified.
Module Supply (from Orbit Network):
4.75 V - 5.25V @ 60 mA max. (all outputs on)
Does not include current sourced from +5V Orbit
supply (pin 13).
CAUTION:
This is the supply for the Module only. An
external supply is required for driving loads.
1.0: Introduction
1.0: Introduction 4Manual No. 502237 Issue 2
DIOM 502237_Issue 2.qxd 20/07/2005 15:38 Page 4

EMC Compliance
BS EN 50081-1: 1992 Generic emission standard Part 1.
Residential, commercial and light Industry.
BS EN 50081-2: 1995 Generic immunity standard Part 2.
Industry environment.
The above compliance statements is for representative
system. Layout of cables, supply sources and electrical
environment may affect performance.
IP Rating
IP53 when mounted in an upright position.
IP50 when mounted in any position (other than
upright.).
1.0: Introduction
1.0: Introduction 5Manual No. 502237 Issue 2
DIOM 502237_Issue 2.qxd 20/07/2005 15:38 Page 5

Pin Connections
Inputs / Outputs:
8 lines used as either input or outputs, connected via a
short (0.5 m) flying lead and 15-way D-type connector.
Pin Number Pin Label Pin Number Pin Label
pin 1 I/O bit 0 pin 8 I/O bit 7
pin 2 I/O bit 1 pin 9 0 V
pin 3 I/O bit 2 pin 10 0 V
pin 4 I/O bit 3 pin 11 0 V
pin 5 I/O bit 4 pin 12 0 V
pin 6 I/O bit 5 pin 13 +5 V
pin 7 I/O bit 6 pin 14 & 15 NC
DIOM 15-way D-type pin connections
2.0: Detail Specification
2.0: Detail Specification 6Manual No. 502237 Issue 2
DIOM 502237_Issue 2.qxd 20/07/2005 15:38 Page 6

I/O Port: Input Specification
• 4K7 pull up to Orbit +5 V
• High-level input voltage ≥+3.15 V
• Low-level input voltage ≤+1.35 V
Absolute Maximum Ratings
VIH(MAX) +30 V
VIL(MIN) -0.5 V
IIL ≤1mA (source)
Note: Output driver MUST be set high (logic 1) using
the OrbitPreset command before using the port
as an input.
2.0: Detail Specification
2.0: Detail Specification 7Manual No. 502237 Issue 2
DIOM 502237_Issue 2.qxd 20/07/2005 15:38 Page 7

I/O Port: Output Specification - Driver
Configuration External Supply
Typical specification, assuming 8 outputs used at 100%
duty cycle.
• Open drain
• Low-level output voltage ≤+0.2 V
Absolute Maximum Ratings - Each Output
VOH(MAX) +30 V
VOL(MIN) -0.5 V
IOL ≤50 mA (sink)
2.0: Detail Specification
2.0: Detail Specification 8Manual No. 502237 Issue 2
DIOM 502237_Issue 2.qxd 20/07/2005 15:38 Page 8

0 V connections: Pins 9 to 12 DIOM
connector
Return current for load connected to an external
supply must be connected to a local 0V (Load
0V). This prevents the load 0V current returning
through pins 9 - 12. on to the orbit network.
• Maximum difference between Orbit 0 V and
Load 0 V < 0.5 V.
2.0: Detail Specification
2.0: Detail Specification 9Manual No. 502237 Issue 2
DIOM 502237_Issue 2.qxd 20/07/2005 15:38 Page 9

I/O Port: Output Specification - Driver
Configuration Using Orbit Supply
+5 V Orbit Supply (pin 13 DIOM connector):
Maximum 50mA total current is available from
the Orbit supply via the DIOM. This can be used
for external loads such as active switches,
indicators and sensing devices.
• Open drain
• Low-level output voltage ≤+0.2 V
Absolute Maximum -Total
IOrbit(MAX) ≤50mA (source total)
2.0: Detail Specification
2.0: Detail Specification 10 Manual No. 502237 Issue 2
DIOM 502237_Issue 2.qxd 20/07/2005 15:38 Page 10

I/O Port: Output Specification - Logic
Configuration
(for driving typical 5V logic inputs).
• High-level voltage VH - 4K7 internal pull up to Orbit +5 V
• Low - level voltage VL ≤+0.2 V (50mA max sink)
2.0: Detail Specification
2.0: Detail Specification 11 Manual No. 502237 Issue 2
DIOM 502237_Issue 2.qxd 20/07/2005 15:38 Page 11

Orbit Commands
The following Orbit commands allow you to communicate with the DIOM. (Also refer to the Orbit Network Measurement
System manual). When using the RS232 Interface Module please refer to the RS232 Interface Module manual.
Orbit Command OrbitRst
Description: reset all Orbit Modules.
Type: broadcast
Parameters: card, channel
Will reset ALL the Orbit Modules on a network at the same time. To set the Orbit Modules to the required Baud rate this
command MUST be sent after the network is powered up and before any other command. Allow at least 0.5 second for
completion of the command.
3.0: Communication with the DIOM
3.0 Communication with the DIOM 12 Manual No. 502237 Issue 2
DIOM 502237_Issue 2.qxd 20/07/2005 15:38 Page 12

Orbit Command OrbitSetaddr
Description: set Orbit Module address.
Type: addressed
Parameters: card, channel, address, identity, option
Each Orbit Module is given a unique 10 byte identity (ID) during manufacture. When used on a network it is more
efficient to use a shorter temporary ADDRESS stored in the Orbit Module memory; this is a number between 1 and 31.
This command is used to set the temporary address.
3.0: Communication with the DIOM
3.0 Communication with the DIOM 13 Manual No. 502237 Issue 2
DIOM 502237_Issue 2.qxd 20/07/2005 15:38 Page 13

Orbit Command OrbitRead1
Description: returns the state of the DIOM inputs.
Type: addressed
Parameters: card, channel, address, reading
The 8 least significant bits of the returned 16-bit number show the state of the input pins. Each pin must first be set
high (via OrbitPreset) if it is to be used as an input. A low state on the input pin will be returned as a logic low (0), a
high state on the input pin will be returned as a logic high (1).
3.0: Communication with the DIOM
3.0 Communication with the DIOM 14 Manual No. 502237 Issue 2
DIOM 502237_Issue 2.qxd 20/07/2005 15:38 Page 14

Orbit Command OrbitPreset
Description: sets the DIOM outputs.
Type: addressed
Parameters: card, channel, address, preset
The 8 least significant bits of the 32-bit number are used to set the output pins. A logic low (0) will turn the output driver
on: the output pin will be set low (0V). A logic high (1) bit will turn the output driver off: the pin will be pulled up to Orbit
+5V via 4K7 and series diode or external load if connected. The pin must be set high if it is to be used as an input.
3.0: Communication with the DIOM
3.0 Communication with the DIOM 15 Manual No. 502237 Issue 2
DIOM 502237_Issue 2.qxd 20/07/2005 15:38 Page 15

Orbit Command OrbitGetinfo
Description: returns information on the Module / Probe
Type: addressed
Parameters: card, channel, address, module type, hardware type, resolution, module info
Will return information about the type of module and / or probe. Using the OrbitIdentify command may return
additional information.
3.0: Communication with the DIOM
3.0 Communication with the DIOM 16 Manual No. 502237 Issue 2
DIOM 502237_Issue 2.qxd 20/07/2005 15:38 Page 16

Orbit Command OrbitClr
Description: clear addressed Orbit Module.
Type: addressed
Parameters: card, channel, address
Performs software reset on a particular Orbit Module. The Orbit Module will then need to be re-addressed. Allow at
least 0.5 second for completion of the command.
3.0: Communication with the DIOM
3.0 Communication with the DIOM 17 Manual No. 502237 Issue 2
DIOM 502237_Issue 2.qxd 20/07/2005 15:38 Page 17

Connecting to the DIOM.
Example of wiring connections of the DIOM.
Inductive loads must be suppressed.
(i.e. protection diode.)
0V load must be connected to local 0V, to
minimise load return current through DIOM
and Orbit.
4.0: Application - Hardware
4.0 Application - Hardware 18 Manual No. 502237 Issue 2
DIOM 502237_Issue 2.qxd 20/07/2005 15:38 Page 18