Modbus Test Master makes it simple to set up, document and test complex Modbus systems. Create device profiles and specifications, pick and choose registers freely. Define multiple data types, specify units, add scaling and comments.
Add as many instances of the devices you have to as many RTU, ASCII or TCP channels as you need. Prefer to see trends of one or multiple sets of values while testing? Or want the data traffic explained while troubleshooting? Modbus Test Master is the solution.

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