Technical Data; Modbus Interface; Commands And Signals Of The Modbus Rtu Interface; General Modbus Rtu Data - AUMA AUMATIC AC 01.2 Manual

Technical data

7. Technical data
Information
7.1.

Modbus interface

Settings/programming the Modbus RTU interface
Setting the Modbus RTU inter-
face

Commands and signals of the Modbus RTU interface

Process representation output
(command signals)
Process representation input
(feedback signals)
Process representation input
(fault signals)
Behaviour on loss of communic-
ation
1) Requires magnetic limit and torque transmitter (MWG) in actuator

General Modbus RTU data

Communication protocol
Network topology
Transmission medium
Fieldbus interface
Transmission rate/cable length
Device types
44
The following technical data includes standard and optional features. For detailed
information on the customer-specific version, refer to the order-related data sheet.
The technical data sheet can be downloaded from the Internet at www.auma.com
in both German and English (please state the order number).
Baud rate, parity and Modbus address are set via the display of the AUMATIC
OPEN, STOP, CLOSE, position setpoint, RESET, EMERGENCY operation command, enable
LOCAL, Interlock OPEN/CLOSE
End position OPEN, CLOSED
Actual position value
1)
Actual torque value
Selector switch in position LOCAL/REMOTE
Running indication (directional)
Torque switch OPEN, CLOSED
Limit switch OPEN, CLOSED
Manual operation by handwheel or via local controls
2 analogue and 4 digital customer inputs
Motor protection tripped
Torque switch tripped in mid-travel
One phase missing
Loss of the analogue customer inputs
The behaviour of the actuator is programmable:
Stop in current position
Travel to end position OPEN or CLOSED
Travel to any intermediate position
Execute last received operation command
Modbus RTU according to IEC 61158 and IEC 61784
Line (bus) structure. When using repeaters, tree structures can also be implemented.
Coupling and uncoupling of devices during operation without affecting other devices is
possible.
Twisted, screened copper cable according to IEC 61158
EIA-485 (RS485)
Baud rate: 9.6 115.2 kbit/s
Maximum cable length (segment length or between two actuators) without repeater:
1,200 m
Possible cable lengths:
-
For line topology with repeater: approx. 10 km (total network cable length)
-
For loop topology: approx. 290 km (redundant loop)
Modbus slave, e.g. devices with digital and/or analogue inputs/outputs such as actuators,
sensors
Actuator controls
AC 01.2/ACExC 01.2 Modbus RTU