Data Communication Test Software. Simply the easiest way to test and debug modbus TCP systems. For system maintenance and device manufacturers. Features: No installation program. Just download, unzip and run; Functions as a ModbusTCP Master or Modbus RTU over TCP Master; All information is entered and displayed in one window; Displays the data traffic; Change data types and byte ordering with a click to determine the format of the reply string without repolling; Supports Multiple data types in the same message; Supports Standard Modbus and Enron Modbus; Supports 2 byte slave IDs; A notes column allows labeling the results; Saves and restores settings; Writes single and multiple values. Save the communication log to a text file. Ideal for new users and handy for the experienced user. Visit www.simplymodbus.ca for a tutorial on the basics of how modbus works. Demo is fully functional and requires program restart after 6 messages.