Fieldbus control
140
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 The fieldbus control
interface on page 147) is activated by setting parameter 98.02 to FIELDBUS or
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.
Slot 2
ACS800
RMIO board
RMBA-01 adapter
std. Modbus link
RPBA-01 adapter
PROFIBUS-DP link
Slot 1
E.g. PROFIBUS Modbus
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