Topic: DMD0243 Using the PID Process Simulator |
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The Do-more Designer Simulator (DmSim) includes a PID Process simulator that can be used to demonstrate the process control abilities of the controller, or for testing potential changes to existing control solutions by working with the process control instructions in a simulation environment before deploying the control solution to a Do-more controller. The PID process simulator uses a first order filter and a dead time calculation to provide the simulated PID loop response.
The PID Process Simulator is opened by clicking 'Sim' on the toolbar of the Simulator and selecting Setup PID Process Simulator.
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The PID Process Simulator requires two ladder logic instructions in the Simulator before it can operate properly. These two instructions ( a PID and a SCALE ) will use the I/O in the simulator to provide space for the PID calculation and user input.
Click the What else do I need to do? button to display a dialog that details the instructions that must be added to the ladder program to make the PID process simulator work.
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The PID Process Simulator will use:
There is a built-in structure for the PID Process Simulator (called $IntProcSim) that contains the following fields used to perform the simulation. This dialog will write values for these fields or they can be set by the ladder logic in the controller.
Update Settings - click this button to write the above three values to the Simulator.
Cancel - click this button to close the PID Process Simulator.
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See Also:
Process Control Instruction Set
Using the PID Process Simulator
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Related Topics:PID Calculation and Tuning Constants
PIDINIT - Set PID Tuning Constants Alarm HandlersInput and Output Value LimitersDEADBAND - Set Outside Deadband Noise SuppressionINTEGRAT - Integrate Over Time Ramp/Soak Profiles - up to 250 steps per ProfileInput and Output ScalingAnalog Control using a Discrete OutputTIMEPROP - Time Proportional Control
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