Advanced Control Foundation : Batch and Continuous Processes — Interactive Source for Process Control

Wireless Control Foundation

Continuous and Discrete Control
for the Process Industry

Simulating Wireless Control


This workshop exercise is designed to further explore the implementation of the process and wireless communication simulation for a recycle tank instrumented with wireless field devices and to show how the simulation is used in the control modules for tank level and reactor flow.

Step 1: Open the module that simulates the recycle tank process and wireless communication module and compare this to the P&ID shown in the Process tab.

Step 2: Examine the off-line and on-line view of the composites that were created to simulate the wireless communication from a transmitter to the control system. Examine the composites created to and to a simulation the communication of the target valve position to the wireless valve.

Step 3: Using a trend of the tank level, the on-off valve position and the flow to the reactor, examine how the on-off recycle valve is manipulated by LC134 to keep the tank level from going below a level setpoint. Notice how the level measurement is updated periodically by the wireless communication.

Step 4: Adjust the setpoint of FIC133 to change the flow rate to the reactor. Using a trend of the flow measurement and valve position, examine how PIDPlus regulates the valve to achieve the new flow setpoint. How does the flow change impact the level control?

Step 5: Reduce the recycle flow input and observe the impact on how frequently the recycle flow is activated.