Vishay 7000 User manual

Vishay Micro-Measurements
P. O. Box 27777, Raleigh, North Carolina, 27611, USA Phone [phone] Fax [phone] www.vishay.com
System 7000 Scanner
Programmer’s Reference Manual
Version 1.01
130-000197
D
ocument Number:
49897

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TABLE OF CONTENTS
1 INTRODUCTION __________________________________________________________________________7
1.1 OVERVIEW _____________________________________________________________________________7
1.2 PROGRAMMING OPTIONS __________________________________________________________________7
1.2.1 StrainSmart and DCOM_______________________________________________________________7
1.3 DEFINITION OF TERMS ____________________________________________________________________8
1.4 DOCUMENT NOTATION AND CONVENTIONS ____________________________________________________8
1.4.1 Numbering Notation__________________________________________________________________8
1.4.2 Referenced VIs, Methods, and Commands_________________________________________________8
1.5 REGISTERED TRADEMARK NOTICES __________________________________________________________9
2 PROGRAMMING OVERVIEW _____________________________________________________________10
2.1 COMMUNICATING WITH THE SYSTEM 7000____________________________________________________10
2.2 ACCESSING MULTIPLE SCANNERS (SYNCHRONIZATION) _________________________________________10
2.3 SYSTEM STATES ________________________________________________________________________11
2.4 COMMAND OVERVIEW ___________________________________________________________________11
2.5 DEBUGGING TIPS _______________________________________________________________________13
3 PROGRAM LAYOUT _____________________________________________________________________14
3.1 OVERVIEW OF PROGRAM LAYOUT -SCANNING ________________________________________________15
3.2 OVERVIEW OF PROGRAM LAYOUT –SINGLE CHANNEL READS ____________________________________16
3.3 ESTABLISHING A CONNECTION TO THE SCANNER _______________________________________________17
3.4 SYSTEM VALIDATION ____________________________________________________________________18
3.5 CONFIGURATION________________________________________________________________________18
3.5.1 System Level Configuration ___________________________________________________________18
3.6 CARD-LEVEL CONFIGURATION _____________________________________________________________19
3.7 CHANNEL-LEVEL CONFIGURATION __________________________________________________________20
3.8 CONFIGURING SCAN INFORMATION _________________________________________________________21
3.9 RECORDING ___________________________________________________________________________22
3.9.1 Setting up Simple Recording __________________________________________________________22
3.9.2 Advanced Recording Options__________________________________________________________23
3.9.2.1 Recording Groups _______________________________________________________________________ 23
3.9.2.2 Configuring Time Based Recording__________________________________________________________ 24
3.9.2.3 Configuring Manual Recording _____________________________________________________________ 26
3.9.2.4 Configuring Limits Recording ______________________________________________________________ 27
3.10 ACQUIRING A SINGLE-POINT CHANNEL READING _____________________________________________35
3.11 ARMING,START SCANNING,AND STOP SCANNING_____________________________________________35
3.12 SYNCHRONIZED (NETWORKED)SCANNERS __________________________________________________35
3.13 STARTING AND STOPPING MANUAL RECORDING ______________________________________________37
3.14 ACQUIRING AND DECODING RECORDED DATA________________________________________________38
3.14.1 Identifying and Reading the Data File__________________________________________________38
3.14.2 Decoding the Data File _____________________________________________________________41
3.14.2.1 Scan ID_______________________________________________________________________________ 41
3.14.2.2 Multiple Record Rates ___________________________________________________________________ 42
3.14.2.3 Varying Data Width _____________________________________________________________________ 42
3.14.2.4 Status Information ______________________________________________________________________ 43
3.14.2.5 Status Byte ____________________________________________________________________________ 43
3.14.2.6 Examples _____________________________________________________________________________ 44
3.14.2.7 Sample Code __________________________________________________________________________ 45
3.14.3 How Data Files are Named __________________________________________________________48
3.14.4 What is a Header File? _____________________________________________________________48
3.15 ACQUIRING REAL-TIME (ONLINE)DATA ____________________________________________________49
3.15.1 Configuring the Real-time (Online) Data Transmission ____________________________________49
3.15.2 Controlling the Real-time (Online) Data Transmission _____________________________________49
3.15.3 Parsing the Real-time (Online) Data ___________________________________________________50
3.16 ZEROING AND SHUNT CALIBRATION________________________________________________________50
3.17 SCALING THE ANALOG-TO-DIGITAL CONVERTER COUNTS_______________________________________52

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4 SYSTEM STATUS AND ERROR HANDLING ________________________________________________53
4.1 ERROR HANDLING ______________________________________________________________________53
4.2 DECODING THE ERROR NUMBER____________________________________________________________54
4.3 QUERYING SYSTEM STATUS _______________________________________________________________54
4.4 MONITORING THE EVENT/STATUS UDP PORT _________________________________________________54
4.4.1 Message Format____________________________________________________________________55
4.4.2 Card Status Message ________________________________________________________________55
4.4.3 Card Error Message ________________________________________________________________56
4.4.4 Control Module Error Messages _______________________________________________________56
5 LABVIEW INSTRUMENT DRIVER _________________________________________________________57
5.1 OVERVIEW ____________________________________________________________________________57
5.2 SYSTEM 7000 INSTRUMENT DRIVER _________________________________________________________57
5.2.1 System 7000 Instrument Driver Layout __________________________________________________57
5.2.2 System 7000 Instrument Driver Examples ________________________________________________58
5.2.3 System 7000 Instrument “Readme.html” _________________________________________________58
5.2.4 Supported LabVIEW Versions _________________________________________________________58
6 ACTIVEX INTERFACE ___________________________________________________________________59
6.1 ACTIVE XINTERFACES ___________________________________________________________________59
6.2 ERROR CODES__________________________________________________________________________59
6.3 CARD MASK,CHANNEL MASK,AND RECORDING GROUP MASK NOTATION __________________________60
6.4 SAMPLE PROGRAMS _____________________________________________________________________61
6.4.1 Delphi Sample Program______________________________________________________________61
6.4.2 Visual C# Sample Program ___________________________________________________________61
6.4.3 LabWindows/CVI Sample Program _____________________________________________________61
6.5 IVMM7000CONTROL INTERFACE DESCRIPTION _______________________________________________62
6.5.1 Properties_________________________________________________________________________62
6.5.1.1 IPAddress Property (Read/Write) ___________________________________________________________ 62
6.5.1.2 CommandPort Property (Read/Write) ________________________________________________________ 62
6.5.1.3 DataPort Property (Read/Write)_____________________________________________________________ 62
6.5.1.4 LastErrorCode Property (Read/Write) ________________________________________________________ 63
6.5.1.5 CommandPortTimeout Property (Read/Write)__________________________________________________ 63
6.5.1.6 DataPortTimeout Property (Read/Write) ______________________________________________________ 64
6.5.2 Connection Methods_________________________________________________________________65
6.5.2.1 Open Method ___________________________________________________________________________ 65
6.5.2.2 Close Method ___________________________________________________________________________ 65
6.5.3 Action - Status Group________________________________________________________________66
6.5.3.1 Arm Method____________________________________________________________________________ 66
6.5.3.2 Disarm Method _________________________________________________________________________ 66
6.5.3.3 StartScanning Method ____________________________________________________________________ 67
6.5.3.4 StopScanning Method ____________________________________________________________________ 67
6.5.3.5 ControlManualRecording Method ___________________________________________________________ 68
6.5.3.6 ControlOnlineDataTransfer Method _________________________________________________________ 68
6.5.3.7 GetSystemState Method___________________________________________________________________ 69
6.5.3.8 GetSyncStatus Method____________________________________________________________________ 69
6.5.3.9 SynchronizeNetworkedScanners Method______________________________________________________ 70
6.5.3.10 StartSynchronizedScanning Method ________________________________________________________ 71
6.5.4 Configuration Group ________________________________________________________________72
6.5.4.1 ConfigureTimeBasedRecording Method ______________________________________________________ 72
6.5.4.2 ConfigureTimeBasedRecordingStartandStop Method ____________________________________________ 72
6.5.4.3 ConfigureManualRecording Method _________________________________________________________ 73
6.5.4.4 SetChannelRecordingGroup Method _________________________________________________________ 74
6.5.4.5 SetLimitType Method ____________________________________________________________________ 74
6.5.4.6 SetLimitsBasedRecordingType Method_______________________________________________________ 75
6.5.4.7 ConfigureLimitsBasedRecording____________________________________________________________ 75
6.5.4.8 ConfigureLimitCondition method ___________________________________________________________ 76
6.5.4.9 SetLimitConditionCount Method____________________________________________________________ 77
6.5.4.10 AssignLimitToChannel Method____________________________________________________________ 78
6.5.4.11 ConfigureGlobalLimit Method_____________________________________________________________ 78
6.5.4.12 ConfigureScan Method __________________________________________________________________ 80
6.5.4.13 ConfigureStrainGageCardExcitation Method _________________________________________________ 81

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6.5.4.14 ConfigureStrainGageChannelBridgeSettings Method ___________________________________________ 81
6.5.4.15 ConfigureHighLevelCardExcitation Method __________________________________________________ 82
6.5.4.16 ConfigureThermocoupleChannel Method ____________________________________________________ 82
6.5.4.17 ConfigureLVDTCardExcitation Method _____________________________________________________ 83
6.5.4.18 ConfigureLVDTChannelInputConnections Method ____________________________________________ 84
6.5.4.19 SetDefaultFilter Method__________________________________________________________________ 84
6.5.4.20 SetFIRFilterCoefficients Method ___________________________________________________________ 85
6.5.4.21 SetDateTimeMethod ____________________________________________________________________ 86
6.5.4.22 ConfigureOnlineDataTransfer Method_______________________________________________________ 86
6.5.4.23 SetScannerNetworkConfiguration Method ___________________________________________________ 87
6.5.4.24 SetBoxID Method ______________________________________________________________________ 88
6.5.5 Data _____________________________________________________________________________89
6.5.5.1 GetStaticADCReading Method _____________________________________________________________ 89
6.5.5.2 GetLastDataFileInformation Method _________________________________________________________ 89
6.5.6 Utilities___________________________________________________________________________91
6.5.6.1 GetControlModuleInformation Method _______________________________________________________ 91
6.5.6.2 GetFreeSpace Method ____________________________________________________________________ 92
6.5.6.3 GetCardStatusMethod ____________________________________________________________________ 92
6.5.6.4 DetectCards Method______________________________________________________________________ 93
6.5.6.5 GetCardInformation Method _______________________________________________________________ 94
6.5.6.6 Flash System LEDs Method________________________________________________________________ 95
6.5.6.7 ResetCard Method _______________________________________________________________________ 95
6.5.6.8 ShuntCalEnable Method __________________________________________________________________ 96
6.5.6.9 RemoteCalEnable Method _________________________________________________________________ 96
6.5.6.10 ClearErrors Method _____________________________________________________________________ 97
6.5.6.11 GetErrorMessage Method ________________________________________________________________ 97
6.5.6.12 RetrieveFile Method_____________________________________________________________________ 98
6.5.6.13 RetrieveLastDataFile Method _____________________________________________________________ 98
6.5.6.14 ListFiles Method _______________________________________________________________________ 99
6.5.6.15 DeleteFile Method ______________________________________________________________________ 99
6.5.6.16 DeleteLastDataFile Method ______________________________________________________________ 100
6.5.6.17 CancelFileTransferMethod_______________________________________________________________ 100
6.6 IVMM7000DATATRANSFERSTATUS INTERFACE DESCRIPTION ___________________________________101
6.6.1 Properties________________________________________________________________________101
6.6.1.1 BytesTransferred Property (Read/Write) _____________________________________________________ 101
6.6.1.2 PercentComplete Property (Read/Write) _____________________________________________________ 101
6.6.1.3 TotalBytes Property (Read/Write) __________________________________________________________ 102
6.6.1.4 ErrorStatus Property (Read/Write)__________________________________________________________ 102
6.6.1.5 TransferComplete Property (Read/Write) ____________________________________________________ 102
7 LOW-LEVEL COMMAND SET____________________________________________________________103
7.1 CARD AND CHANNEL MASK NOTATION _____________________________________________________103
7.2 COMMAND/QUERY SYNTAX ______________________________________________________________104
7.3 RESPONSE SYNTAX _____________________________________________________________________104
7.3.1 Example Responses ________________________________________________________________105
7.4 COMMAND DESCRIPTIONS _______________________________________________________________106
7.4.1 Action Group _____________________________________________________________________106
7.4.1.1 Start Scanning Command_________________________________________________________________ 106
7.4.1.2 Stop Scanning Command_________________________________________________________________ 106
7.4.1.3 Start Manual Recording Command _________________________________________________________ 106
7.4.1.4 Stop Manual Recording Command _________________________________________________________ 106
7.4.1.5 Arm Command_________________________________________________________________________ 107
7.4.1.6 Disarm Command ______________________________________________________________________ 107
7.4.1.7 Start Online Data Transfer ________________________________________________________________ 107
7.4.1.8 Stop Online Data Transfer ________________________________________________________________ 107
7.4.1.9 Synchronize Networked Scanners __________________________________________________________ 108
7.4.1.10 Start Scanning on Networked Scanners _____________________________________________________ 108
7.4.2 Recording Group __________________________________________________________________109
7.4.2.1 Manual Recording Mode _________________________________________________________________ 109
7.4.2.2 Set Pre-trigger Buffer Size for Manual Recording Command _____________________________________ 109
7.4.2.3 Set Time-Based Recording Mode Command__________________________________________________ 110
7.4.2.4 Set Time-Based Recording Count Command _________________________________________________ 110
7.4.2.5 Set Time-Based Recording Delay Command__________________________________________________ 111
7.4.2.6 Set Time-Based Recording Skip Count Command _____________________________________________ 111

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7.4.2.7 Set Time-Based Recording Burst Count Command_____________________________________________ 112
7.4.2.8 Set Time-Based Recording Burst Skip Count Command_________________________________________ 112
7.4.2.9 Set Limits-Based Recording Setting ________________________________________________________ 113
7.4.2.10 Set Limits-Based Recording Mode Command________________________________________________ 113
7.4.2.11 Set Limits-Based Recording Skip Count Command ___________________________________________ 114
7.4.2.12 Set Limits-Based Recording Burst Count Command___________________________________________ 114
7.4.2.13 Set Limits-Based Recording Burst Skip Count Command_______________________________________ 115
7.4.3 Scan Group ______________________________________________________________________116
7.4.3.1 Set Scan Rate Command _________________________________________________________________ 116
7.4.3.2 Create Scan List Command _______________________________________________________________ 116
7.4.3.3 AutoStop Command_____________________________________________________________________ 117
7.4.3.4 Get Last Data File Info___________________________________________________________________ 117
7.4.3.5 Set Box ID from Scan Header Command ____________________________________________________ 118
7.4.3.6 Set Project Name to Scan Header File Command ______________________________________________ 118
7.4.3.7 Set Scan Session Descriptor to Scan Header File Command ______________________________________ 118
7.4.3.8 Set Scan Session GUID to Scan Header File Command _________________________________________ 119
7.4.3.9 Set Scan Session IP Address to Scan Header File Command _____________________________________ 119
7.4.3.10 Set the Size of the Scan Buffer____________________________________________________________ 119
7.4.4 Limits Group _____________________________________________________________________120
7.4.4.1 Set Limit Type Command ________________________________________________________________ 120
7.4.4.2 Set Number of Limit Event Conditions Command _____________________________________________ 120
7.4.4.3 Set Limit Event Condition Command _______________________________________________________ 121
7.4.4.4 Set Lower Limit Value Command __________________________________________________________ 121
7.4.4.5 Set Upper Limit Value Command __________________________________________________________ 122
7.4.4.6 Set Pre-trigger Buffer Size Command _______________________________________________________ 122
7.4.4.7 Set Post-trigger Buffer Size Command ______________________________________________________ 122
7.4.4.8 Ignore or Accept Sync (Global) Limits ______________________________________________________ 123
7.4.4.9 Set Pre-trigger Buffer Size Command for Sync (Global) Limits ___________________________________ 123
7.4.4.10 Set Post-trigger Buffer Size Command for Sync (Global) Limits _________________________________ 123
7.4.5 Card Group ______________________________________________________________________124
7.4.5.1 Get Card Information Command (AIM/Interface Card)__________________________________________ 124
7.4.5.2 Set Excitation Command _________________________________________________________________ 125
7.4.5.3 Get Free Space Command ________________________________________________________________ 125
7.4.5.4 Card Status____________________________________________________________________________ 126
7.4.5.5 Card Reset ____________________________________________________________________________ 126
7.4.5.6 Excitation Output Enable/Disable __________________________________________________________ 127
7.4.5.7 Aim Temperature Sensor Query____________________________________________________________ 127
7.4.5.8 Set LVDT Excitation Frequency ___________________________________________________________ 127
7.4.6 Channel Group____________________________________________________________________128
7.4.6.1 Asynchronous Read A/D Converter Command ________________________________________________ 128
7.4.6.2 Set Channel Recording Group Command ____________________________________________________ 128
7.4.6.3 Set FIR Filter Command _________________________________________________________________ 128
7.4.6.4 Shunt Calibration Resistor Enable / Disable __________________________________________________ 129
7.4.6.5 Dummy Resistor Selection________________________________________________________________ 129
7.4.6.6 Enable Half-Bridge _____________________________________________________________________ 129
7.4.6.7 Remote Calibration Resistor Enable Disable __________________________________________________ 130
7.4.6.8 Set / Query Thermocouple Type ___________________________________________________________ 130
7.4.6.9 Assign a Limit Event Condition to a Channel(s) _______________________________________________ 131
7.4.6.10 Set Default Filter Command______________________________________________________________ 131
7.4.6.11 Set LVDT Demodulator Source___________________________________________________________ 132
7.4.7 File Group _______________________________________________________________________133
7.4.7.1 Retrieve File___________________________________________________________________________ 133
7.4.7.2 List Files______________________________________________________________________________ 134
7.4.7.3 Delete File ____________________________________________________________________________ 134
7.4.7.4 Cancel File Transfer_____________________________________________________________________ 135
7.4.7.5 List Files in Control Module ______________________________________________________________ 135
7.4.7.6 Retrieve File from Control Module _________________________________________________________ 135
7.4.7.7 Delete File from Control Module___________________________________________________________ 136
7.4.7.8 Verify the Checksum of a Control Module File ________________________________________________ 136
7.4.8 System Group _____________________________________________________________________137
7.4.8.1 Set Date/Time _________________________________________________________________________ 137
7.4.8.2 Set IP Configuration Information___________________________________________________________ 138
7.4.8.3 Get Free Space Command ________________________________________________________________ 138
7.4.8.4 Configure Online Data ___________________________________________________________________ 139
7.4.8.5 Define Scanner’s Network Configuration ____________________________________________________ 139

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7.4.8.6 Verify Sync Cable Status _________________________________________________________________ 140
7.4.8.7 Card Detect ___________________________________________________________________________ 140
7.4.8.8 Clear Errors ___________________________________________________________________________ 140
7.4.8.9 Get Control Module Information Command (Control Module) ____________________________________ 141
7.4.8.10 Display Flashing LED Sequence __________________________________________________________ 141
7.4.8.11 Clear Errors __________________________________________________________________________ 142
7.4.8.12 System Status Query ___________________________________________________________________ 142
7.4.8.13 Get Error Message from Error Code _______________________________________________________ 142
8 WARRANTY ____________________________________________________________________________143

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1 INTRODUCTION
1.1 Overview
The System 7000 data acquisition instrument (scanner) may be remotely programmed via an Ethernet
(TCP/IP) interface. Any high-speed, modern personal computer supporting this interface may be used to
program the System 7000 and, as a result, the scanner can be a part of an automated instrumentation
system.
This manual assumes that you are familiar with the operation of the System 7000 scanner. Please refer to
the “System 7000 Instruction Manual” for information on specifications and operation. The instruction
manual also contains information on setting up the network connections and configuring TCP/IP and
UDP.
1.2 Programming Options
This manual describes three different methods of programming the System 7000 scanner.
National Instruments LabVIEW instrument driver
ActiveX automation interface
Low-level TCP commands
How do I choose which method is best for my application?
The LabVIEW instrument driver should be used if you are writing software using the NI
LabVIEW graphical programming language. The driver is compliant with the National
Instruments instrument driver standards.
The ActiveX automation interface is recommended for use in most applications developed in the
Microsoft Windows environment. This includes programming environments such as Microsoft
Visual Basic, Microsoft Visual C++ and C#, National Instruments LabWindows/CVI, and
Embarcadero Delphi. The ActiveX application program interface (API) simplifies your
programming by bundling related commands into a single method, managing critical timing, and
handling low-level requirements (such as building and parsing) of the TCP commands.
The low-level TCP commands should be used if your programming environment does not support
the ActiveX automation interface or if your application requires more flexibility. It is highly
recommended that you use either the LabVIEW instrument driver or the ActiveX automation
interface. Though documented here, use of the low-level commands is not supported.
1.2.1 StrainSmart and DCOM
StrainSmart is a software application, provided by Vishay Micro-Measurements, that provides a
comprehensive user interface for configuring the System 7000 and managing data collection. StrainSmart
shares fully-scaled data with other applications via DCOM. If you wish to use StrainSmart and have a
separate, custom application for monitoring data, it is recommended that you use the DCOM interface.
Please refer to the document “Overview of StrainSmart Automation Server” for more information on
using the DCOM interface. This document is found on the “Programmer’s Reference Kit” CD.

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1.3 Definition of Terms
Scanning The System 7000 is said to be scanning after it has completed an “arm/start”
sequence and it is actively acquiring data.
Scan A scan in the System 7000 refers to a single group of data that is acquired
simultaneously. For example, if you have 2 cards in your scanner (with 8 active
channels per card), a single scan consists of all 16 readings made at the same point
in time.
Note: Many instruments refer to a single group of simultaneously acquired data as
a “sample”, whereas, a “scan” is a collection of N samples. Notice the difference
in terminology.
Scan ID The scan identifier is effectively a sequence number for each scan. The first scan
read is given a Scan ID of 1, the second scan has an ID of 2, and so forth. If you
know the scan rate, you then know the elapsed time at which the scan occurred.
(e.g. with a scan rate of 1000 scans/sec, scan 1 occurs at 0 mSec, scan 2 at 1mSec,
scan 3 at 2mSec, etc…)
Scan Rate The rate at which scans are acquired. This can also be thought of as the sampling
rate.
I/O Card or AIM
Card
This refers to a Model 7003-8-A-I Analog Input Cards coupled with either a Model
7003-8-SG Strain Gage Input Card, Model 7003-8-HL High Level Input Card,
Model 7003-8-TC Thermocouple Input Card, or a Model 7003-8-LVDT Input
Card.
StrainSmart StrainSmart is a software application, provided by Vishay Micro-Measurements,
that provides a comprehensive user interface for configuring the System 7000 and
managing data collection.
1.4 Document Notation and Conventions
1.4.1 Numbering Notation
Hexadecimal values are indicated by the prefix 0x, binary values by the prefix 0b, and decimal values
have no prefix.
For example,
Table 1 – Numbering Notation
1.4.2 Referenced VIs, Methods, and Commands
Most sections in the Programming Overview section include a table similar to the one shown below. This
table shows the commands (or VIs or methods) that are relevant to the section.
LabVIEW Control Manual Recording VI
Active X ControlManualRecording method
Low-level Start Manual Recording command
Stop Manual Recording command
Decimal Hexadecimal Binary
10 0x0A 0b00001010

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1.5 Registered Trademark Notices
Windows, Windows Visual Basic, Windows Visual C++, and Windows Visual C# are registered
trademarks of Microsoft Corporation in the United States and other countries. LabVIEW and
LabWindows/CVI are registered trademarks of National Instruments, Inc (NI) in the United States and
other countries. Delphi is a registered trademark of Embarcadero Technologies, Inc.

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2 PROGRAMMING OVERVIEW
2.1 Communicating with the System 7000
Detailed instructions on setting up the network connections and the TCP/IP and UDP settings are found in
the “System 7000 Instruction Manual”. This document describes the network communications from a
programming standpoint.
The System 7000 uses four communication ports; two for TCP communication and two for UDP
broadcasts. The host PC (via your program) must establish a connection to one or more of these ports.
Port Description
Command Port The TCP port used to transmit commands to the scanner and
receive command responses from the scanner.
File Data Port The TCP port used by the scanner to download files.
Real-time Data Port The UDP port number used to broadcast real-time data.
Event/Status Port The UDP port number used to broadcast messages containing
status or error information.
Table 2 – Communication Ports
For additional information on the TCP/IP and UDP protocols, the Internet Engineering Task Force (IETF)
is the definitive source of information. They are located at http://www.ietf.org. Some documents of
particular interest are:
IETF RFC 791: Internet Protocol (http://www.ietf.org/rfc/rfc791.txt)
IETF RFC 768: User Datagram Protocol (http://www.ietf.org/rfc/rfc768.txt)
Note: A System 7000 scanner is capable of generating a significant amount of network traffic when
broadcasting real-time data; therefore, it is important to carefully consider the network architectural
design.
2.2 Accessing Multiple Scanners (Synchronization)
It is possible to access multiple scanners with a single application. However you must establish a unique
network connection to each scanner. Individual scanners may operate independently or be synchronized
with each other (i.e. they perform simultaneous sampling because their analog-to-digital converter clock
signal is shared via synchronization cables). Synchronization is discussed in detail in the “System 7000
Instruction Manual”.
If your application does not require simultaneous sampling, it will simplify your programming (and
physical setup), if you leave your scanners unsynchronized. If you choose to synchronize your scanners,
they are referred to as being “networked” together. This should not be confused with the Ethernet
network. One scanner in the “network” must be designated as the master scanner. There is a special
command set that deals with configuring and starting data collection on synchronized scanners.