ABB ACH550-UH-011A-6 User Manual page 146

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ACH550-01 User's Manual
The figure below shows the ACH550 fieldbus control.
FBA: Fieldbus
adapter (option Rxxx)
EFB: Standard serial
link RS485
When using serial communication, the ACH550 can:
receive all of its control information from the fieldbus, or
be controlled from some combination of fieldbus control and
other available control locations, such as digital or analogue
inputs, and the control panel (operator keypad), or
be monitored only (drive signals, status data and I/O).
Serial communications
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Other
devices
Slot 2
Either a plug-in fieldbus adapter
X1:28...32
module or the standard serial RS485
interface can be used at a time.
Fieldbus controller
141

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