Function
Description
To define a process the user builds a sequence of functions:
Absolute Value
Calculates the absolute value of its input
Add
Sum up to 8 operands
Alarm
Allows for setting, clearing and enabling alarms
AND
Performs a logical AND of up to 8 operands
Append
Appends up to 8 strings together
Bang
Bang Controler Implements a simple bang-bang control
DBToTable
Runs a query on a database and returns the results as a html table
Cycle Time
Calculates the time required to process a unit
Divide
Divides an operand by up to 7 other operands
Down Counter
Decrements the past output by its input
Derivative
Calculates the derivative of its input
Send an email that may contain current process data
Extract
Extracts a sub string from its input string
Fetch
Gets a variable from another process
Get
URL Retrieves a resource from another web server
HTML
Generates a HTML or text string that may contain current process data
If
Conditionally executes the functions enclosed
Integral
Calculates the integral value of its input
Log to Database
Logs process variables to a database
Log to File
Logs process variables to a file
Maximum Outputs
the maximum value of the input
Minimum Outputs
the minimum value of the input
Moving Average
Average of the past N input values
Multiply
Multiplies up to 8 operands
mX/d + b
Implements the equation m*X/d - b
NAND
Performs a logical NAND of up to 8 operands
NOR
Performs a logical NOR of up to 8 operands
OR
Performs a logical OR of up to 8 operands
Power X^Y
Calculates X raised to the Y power
Print Console
Appends up to 8 strings together and output the string to the WebDevice console
Put Set
the value of a variable in another process
Random
Random number generator
Read AI
Reads all the analog input channels
Read DI
Reads all the digital bits on a port
Read DataBase
Reads select fields from a database
Read Serial
Reads data from a EDAS serial port
Retain Data
Save process variables to file on each loop, and restores them the next time the process is started
Run Process
Runs another process
Script
Allows users to extend the functions capability by writing WebDevice script
Set>
Sets the value of a process variable
SPC
Caculates SPC variables
Square X^2
Square of the input
Square Root
Square Root of the input
Subtract
Subtracts up to 7 operands from the first operand
Trigger DO
Triggers digital output channels
Up Counter
Accumulates the up, down and total time based on its input value
Variable
Creates and initalizes a process variable
Weighted Average
Calculates an output based on a weighted value of the input and output
Write AO
Sets the analog outputs
Write DO
Sets the digital outputs
Write Serial
Writes data to a EDAS serial port