Xylem STORM 3 Basic Programming manual - Manual (Page 5)

Basic Programming
Each Storm data logger contains a built-in BASIC interpreter (as of firmware version 1.4.2) allowing
for more complex procedures and more specific control over operations performed by the data
logger. Many traditional BASIC commands and features have been combined with an added sub-
set of Storm-specific operations to create the Basic programming language available on the Storm.
Programs can be easily created, edited, and debugged directly on the Storm, enabling quick and
verified programs to enhance the Storm experience. This manual will cover all of the major Basic
commands and provide examples on how they are used.
Basic Features
• User-defined number and string variables, including single and multi-dimensional
arrays support
• Built-in string and number processing functions (for both received and
user-created variables)
• Easy access to RS-232 COM/RS-485 serial ports using simple PRINT and
INPUT commands
• Easy access to log and data files using simple PRINT and INPUT commands
• User-created subroutine support
• Support for traditional BASIC constructs such as goto, gosub, and line numbers
• Structured programming commands including SWITCH-CASE statements, single and
multi-line IF-THEN statements, FOR, WHILE, REPEAT, and DO loops
• Ability to perform raw measurements of data logger Inputs (e.g. Analog, Digital,
SDI-12, etc)
• Ability to retrieve current and previously measured values of any Sensor
• Access to system variables such as date and time
• Ability to perform complex math operations using built in trigonometric and
logarithmic functions
• Ability to use a Basic program’s returned values within Outputs (Log File, GOES, etc)
• Ability to run a program in response to incoming RS-232 serial communication
• No limit to the number of variables created or used within a program
• No file size limit on Basic programs
• No limit to the number of Basic programs installed and/or used on the system
• Easy to install on or retrieve programs from the data logger
• Programs are saved as part of the configuration file
• Simple program troubleshooting via the User Interface debug option
• Ability to create and/or edit a Basic program directly on the User Interface
• Basic programs can be easily run on a scheduled basis or from a digital or serial event
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