Quickstart Guide
ABB PLC and drives integration using Modbus RTU
Test the program
If the drive has an active fault ("TRIPPED" output is colored blue) (1), then try to reset by setting the "RESET" input
= TRUE (2). Double‐click the input variable and choose "Write Values" from the "Online" menu (3).
When the "READY" output is TRUE (blue) (1), then set the "SPEED_REF" input (2) to desired speed value and
"START" input = TRUE (3). Write values from the Online menu or Ctrl+F7. Check that the drive starts and follows
the given speed reference.
Note! Speed reference is set in the block input "SPEED_REF" as a value between ‐20000 and 20000, where 20000
corresponds to a parameter in the drive (see chapter "Drive configuration").
Modbus RTU
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PLC and drives integration