Redundant Fieldbus Control - ABB ACS800 Series Firmware Manual

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Redundant fieldbus control

It is possible to connect two fieldbuses to the drive with the following adapter
configuration:
• Type Rxxx fieldbus adapter module (not RMBA-01) is installed in drive slot 1.
• RMBA-01 Modbus Adapter module is installed in drive slot 2.
The control (i.e. the Main Reference data set, see section
interface
STD MODBUS.
In case there is a communication problem with one fieldbus, the control can be
switched to the other fieldbus. Switching between the buses can be controlled
e.g. with adaptive programming. Parameters and signals can be read by both
fieldbuses, but simultaneous cyclical writing to the same parameter is forbidden.
Fieldbus control
ACS800
RMIO board
RPBA-01 adapter
PROFIBUS-DP link
Slot 1
RMBA-01 adapter
std. Modbus link
Slot 2
on page 147) is activated by setting parameter
E.g. PROFIBUS Modbus
The fieldbus control
98.02 to FIELDBUS or