ABB ACS350 User Manual page 244

244
ACS350
The drive can be set to receive all of its control information through the fieldbus
interface, or the control can be distributed between the fieldbus interface and other
available sources, e.g. digital and analog inputs.
Fieldbus control with embedded fieldbus
RS-232*
panel connector
X3 FMBA Modbus
Adapter
Data flow
Control Word (CW)
References
Status Word (SW)
Actual values
Parameter R/W Requests/Responses
Fieldbus
controller
Fieldbus
Other
devices
RS-485*
X1
Process I/O (cyclic)
Service messages (acyclic)
*Embedded
fieldbus (modbus)
connection is either
RS-232 or RS-485.