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18 Overview of the Ethernet network and the FMBT-21 module
Star topology
1
Other device
2
ABB drive
3
Switch or router
Daisy chain topology
1
ABB drive
2
Other device
3
Network master device
FMBT-21 module overview
The FMBT-21 Modbus/TCP adapter module is an optional device for ABB drives which
enables the connection of the drive to an Ethernet network.
Through the adapter module you can:
•
give control commands to the drive (for example, Start, Stop, Run enable)
•
feed a motor speed or torque reference to the drive
•
give a process actual value or a process reference to the PID controller of the drive
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1
1
2
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3
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