InduSoft Web Studio - InduSoft Corporation

InduSoft Web Studio
Tutorial training – Revision B – Sep/10/2000
© Copyright InduSoft Ltd. 2000
8. Configuring Worksheets
Configuring a Math Worksheet (simulate the field process)
Before continuing our application development, we need to create a script to simulate some
variables. In a real world application, these variables would be coming from field equipment such
as a PLC or a Soft Control. This simulation will be done in a math worksheet, which needs to be
constantly executed
- Right click on the "Math" folder located in the Tasks tab, select the option "Insert" to create
a new math worksheet.
The Execution field is what controls the Math Execution. You can type a full expression here, a
simple condition, a tag name, a value, and when this condition is TRUE, the math will execute.
So, in the header, configure the field Execution with the value 1. This enables the continuous
execution of this math worksheet just because 1 is always a TRUE condition.
In the math worksheet's body, configure the functions to simulate:
-The valve’s status, according with the command given.
-The level, temperature and pressure of each of the three tanks.
- To simulate the status of each valve, just transfer the value from the command tags to the status
tags.
- To simulate the properties for temperature and pressure for each tank, let us consider these
properties using trigonometric functions (sine and cosine).
- To simulate the properties for level of each tank, remember that both valves (fill and empty)
allow for the same flow.
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