What is the Sequencer Object? - Platforma Internetowa ASTOR

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16 Chapter 1 About the Sequencer Object Settings The Settings panel looks like the following: You can set generic parameters of the Sequencer Object in the Settings panel, such as: • Settings - you can set the initial command and the Sequencer behavior after errors and failover • Alarms - you can instruct the Sequencer Object to generate an alarm if an error or a warning occurs • Security - you can lock access to certain Sequencer Object features at design time and run time Step Structure This section describes the functionality embedded in every step. Sequencer Object User’s Guide
Step Structure 17 Step Entry, Step Body and Step Exit Every step includes a: • Step Entry section where values are written to ArchestrA attributes after the step is activated. The On Entry outputs are processed on the first scan cycle when the step becomes active. • Step Body section where the step condition and jump condition are continuously evaluated. Step and jump conditions are not executed until the second scan of the step. • Step Exit section where values are written to ArchestrA attributes after the step condition or jump condition is fulfilled. The On Exit outputs are processed in the same scan cycle when the step condition or jump condition is fulfilled. STEP ENTRY: write values to On Entry outputs Aliases On Entry IAS attributes (UDAs, target device attributes etc …) Step n STEP BODY: evaluate step condition at every scan cycle On Exit STEP EXIT: write values to On Exit outputs Note Once a step is active, it is evaluated once per scan cycle until it is no longer the active step. Minimal Steps Minimal Steps are empty steps with • an Always True step condition • no jump condition • no values being written to outputs The minimal step can be considered a No Operation (NOP) Step. The Sequencer stays in an empty step exactly two engine execution cycles before advancing to the next step. No Operation (NOP) steps are useful for inserting dummy steps for future enhancements. Sequencer Object User’s Guide
Page 1 and 2: ArchestrA Sequencer Object User’s
Page 3 and 4: 3 Contents Welcome.................
Page 5 and 6: Contents 5 Assigning the Value of
Page 7 and 8: Contents 7 Advancing a Step.......
Page 9 and 10: 9 Welcome This guide assumes you kn
Page 11 and 12: 11 Chapter 1 About the Sequencer Ob
Page 13 and 14: Sequencer Object Structure 13 The
Page 15: Sequencer Object Structure 15 In t
Page 19 and 20: Step Structure 19 1 The step becom
Page 21 and 22: Steps and Aliases Naming Convention
Page 23 and 24: 23 Chapter 2 Defining Steps This se
Page 25 and 26: Configuring Steps 25 Write On Exit
Page 27 and 28: Configuring Steps 27 • Cyclic Ti
Page 29 and 30: Inserting Steps 29 2 Click the Add
Page 31 and 32: Defining Minimal Steps 31 3 Select
Page 33 and 34: Validating the Step Program 33 Val
Page 35 and 36: Locking the Step Program 35 2 Clic
Page 37 and 38: 37 Chapter 3 Defining Step and Jump
Page 39 and 40: Defining Steps with a Cyclic Timer
Page 41 and 42: Defining Steps with a Cyclic Timer
Page 43 and 44: Defining Steps with Always True or
Page 45 and 46: Defining Combinations of Triggers a
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Page 55 and 56: Assigning an Output Value to a Step
Page 61 and 62: Deleting Aliases 61 To rename an A
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Viewing Alias References 67 • th
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69 Chapter 6 Defining Sequencer Pro
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Handling Errors and Reporting Alarm
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Handling Errors and Reporting Alarm
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Configuring Security 75 2 Select t
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Configuring Security 77 2 Select t
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Configuring Security 79 To change
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81 Chapter 7 Importing and Exportin
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Exporting the Program Settings 83
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Importing the Program Settings 85
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87 Chapter 8 Running the Sequencer
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Handling Restart/Failover Condition
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Handling Restart/Failover Condition
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93 Chapter 9 Using Sequencer Progra
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Controlling Program Flow at Run Tim
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111 Chapter 10 Modifying the Sequen
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Viewing and Changing the Configurat
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Changing Step Program and Alias Con
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Loading and Saving 117 3 Check the
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Uploading Run-Time Changes 119 Aft
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Detecting Errors at Run Time 121
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Using the Sequencer Object with Red
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125 Appendix A Sequencer Object Hel
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Configuration Object Attributes 12
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Run-Time Object Attributes 133 Exe
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Run-Time Object Attributes 135 Att
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Alarm Attributes 153 Attribute .Ac
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155 Appendix B Sequencer Program XM
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About Steps 157 Condition Type Con
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Example XML 159 specifies if pro
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161 Appendix C Sequencer State Tran
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Current Execution State: RunningSin
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Current Execution State: RunningHel
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Current Execution State: StoppedCom
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169 Appendix D Error Codes for Run-
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Glossary 171 Glossary Application
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Glossary 173 Check out Checkpoint
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Glossary 175 Galaxy Repository Hie
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Glossary 177 Package File (.aaPKG)
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Glossary 179 SmartSymbols System M
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181 Index A a numerical output valu
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Index 183 aliases 60, 64 steps 28
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What is the Sequencer Object? - Platforma Internetowa ASTOR

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