AddMe is programmable using a language we named PL/i which is described here.

Note: Earlier configuration tools for Modbus products included access to the PL/i compiler via this tool. The compiler is now supported with a much better independent tool that also provides source level debugging support. Look for the PL/i tool icon. This tool is available for free download at www.csimn.com.

Do This: Several program related functions are performed here, including start the download, start or stop a previously loaded program, clear the program, and request status while running. Select the appropriate action, and click the 'Do This' button. If you selected 'Send Program', a file selection dialog window will appear. You should select a previously compiled file having a .plx suffix.

Program State: Run status is indicated here as 'idle', 'running', or 'suspended'. Any time the program is waiting as a result of a delay() call, the state is suspended.

Error Status: Various messages including possible runtime errors are displayed here. This is updated each time you click 'Do This' with 'Request Status' indicated.

Program Error: If a runtime error has occurred, this shows the program counter location where it occurred.

Out of Service: This box will be checked if no program has been downloaded, or the program object has been placed out of service (forcing it to be suspended).