Fieldbus control
139
Fieldbus control
Chapter overview
The chapter describes how the drive can be controlled by external devices over
a communication network.
System overview
The drive can be connected to an external control system – usually a fieldbus
controller – via an adapter module. The drive can be set to receive all of its control
information through the external control interface, or the control can be distributed
between the external control interface and other available sources, for example
digital and analog inputs. The following diagram shows the control interfaces and I/O
connections of the drive.
Fieldbus
Other
devices
Fieldbus
controller
Slot 1 or 2
References
Data Flow
Status Word (SW)
Actual values
Parameter R/W requests/responses
ACS800
Slot 1
RDCO comm.
module
RMIO board
RMBA-01 adapter
std. Modbus link
Fieldbus adapter
Process I/O (cyclic)
Service messages (acyclic)
Rxxx
(*
(*
Control Word (CW)
(
* Either an Rxxx or Nxxx, and an RMBA-01 adapter can be connected to the drive simultaneously.
CH1
(DDCS)
CH0
(DDCS)
(*
or
Fieldbus adapter
Nxxx
Advant
controller
(e.g. AC
800M,
AC 80)
I/O adapter
RTAC/RDIO/RAIO
Modbus
Controller
AIMA-01 I/O
adapter module
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