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Appendix G Glossary of Terms
325
Database SQL
Query
A Database SQL Query (or SQL Query for short) is
interpreted dynamically at runtime. The SQL Text can be
modified at runtime, enabling different Queries to be run
for varying situations however, the SQL Text has to be
compiled on the fly every time it is executed and
consequently is less efficient than a Server Query.
DBCS
DBCS stands for Double Byte Character Set and is a
Microsoft extension of ASCII which uses 2 bytes (16 bits)
to define character codes. With this larger range it can
include accented characters, extended ASCII characters,
Nordic characters and symbols.
DCOM
DCOM is a distributed version of COM that allows
components on different PCs to interact over a network.
DDE
Dynamic Data Exchange. A channel through which
correctly prepared programs can actively exchange data
and controls other applications within Microsoft
Windows. DDE technology was notoriously unstable and
was replaced with OLE technology.
See also Item, Server, server application and Topic.
Development
Environment
SCADA applications are created and tested using the
development environment within CX-Supervisor. On
completion, the finished application can be delivered as a
final customer application to be run by the run-time
environment.
DLL
Dynamic Link Library. A program file that although
cannot be run stand-alone as an executable, can be
utilised by one or more applications or programs as a
common service. DLL files have a *.DLL extension.
DLL's comprise a number of stand-alone functions. In
CX-Supervisor, a DLL containing icons can be accessed
to represent the display part of an OLE object. One such
DLL, 'MORICONS.DLL', is provided in the standard
Microsoft Windows installation.
Download
A recipe is downloaded during runtime. This process
involves identifying the appropriate recipe and executing
the validation code, if any exists. The download is
complete when each ingredient has set its point to the
target value.
Executable
A file that contains programs or commands of an
application that can be executed by a user or another
application. Executable files have a *.EXE file extension.
CX-Supervisor provides two executable files, one for the
development environment (CXSUPERVISORDEV.EXE),
and one for the run-time environment (SCS.EXE).
Expressions
In the CX-Supervisor script language, expressions are a
construct for computing a value from one or more
operands. For instance, in the example "
lift =
rate
", the expression is "
rate
"
where the result yielded from the expression is used for
the value of "
lift
".
Summary of Contents for CX-Supervisor
Page 1: ...CX Supervisor Software Cat No W10E EN 01 User Manual Software Release 3 1...
Page 3: ...Copyright Notice 2...
Page 16: ...15...
Page 17: ...16...
Page 27: ...Tip of the Day SECTION 1 Graphics Editor 26...
Page 35: ...CX Supervisor Preferences SECTION 2 Pages 34...
Page 79: ...Responding to Events SECTION 5 ActiveX Objects 78...
Page 115: ...Printing the Graphics Library SECTION 7 Graphics Library 114...
Page 181: ...Data Logging SECTION 11 Data Logging 180...
Page 201: ...Examples SECTION 12 Databases 200...
Page 243: ...Performance Monitor SECTION 16 Application Analysis Performance Monitor 242...
Page 253: ...Using with Omron s CX Server OPC SECTION 17 Using CX Supervisor as an OPC Cli 252...
Page 259: ...Creating a CX Supervisor Client application SECTION 18 Connecting to a remote CX 258...
Page 263: ...Adding a Point Linked to a Parameter SECTION 19 Connecting to Omron Industrial 262...
Page 271: ...Data Logging SECTION 20 Best Practices 270...
Page 275: ...Configuring a Server PC running Windows NT or 2000 Appendix A Configuring a PC 274...
Page 277: ...Appendix B Frequently Asked Questions 276...
Page 296: ...Appendix B Frequently Asked Questions 295...
Page 297: ...Appendix B Frequently Asked Questions 296...
Page 298: ...Appendix B Frequently Asked Questions 297...
Page 299: ...Appendix B Frequently Asked Questions 298...
Page 333: ...Revision history 332...