9.2 Description of the input data
Register 1: Logical signals
Important signals from the
actuator concerning errors,
warnings, operations:
26
Actuator controls AUMA MATIC AM/ AMExB/ AMExC
Modbus Operation instructions
Bit Designation Value Description
0
OPEN
position
Limit seating
in end posi-
tion OPEN
1 Limit switch in direction OPEN operated.
0 other
1
CLOSED
position
Limit seating
in end posi-
tion CLOSED
1 Limit switch in direction CLOSE operated.
0 other
CLOSED
position
Torque seat-
ing in end po-
sition
CLOSED
1
Torque switch and limit switch in direction CLOSE op-
erated.
0 other
2
Setpoint
reached
1
The setpoint is within max. error variable (outer dead
band). Signal occurs only if Modbus master has set
the Setpoint reached bit.
0 other
3
—
1
(reserved for extensions)
0
4
Running
OPEN
1
Operation command (OPEN or SETPOINT) from
Modbus in direction OPEN is executed. For operation
in stepping mode, this signal is also active during an
off-time, the dead time, and the reversing prevention.
0 No operation is carried out via Modbus.
5
Running
CLOSED
1
Operation command (CLOSE or SETPOINT) from
Modbus in direction CLOSE is executed. For opera-
tion in stepping mode, this signal is also active during
an off-time, the dead time, and the reversing preven-
tion.
0 No operation is carried out via Modbus.
6
Warning ind.
1
One or several warnings have occurred.
Collective signal: Contains the result of a disjunction
(OR operation) of all bits of the register “Warning sig-
nals (page 28)
0
No warnings are active (all bits of the warnings can-
celled).
7
Fault ind.
1
One or several faults have occurred so that the actua-
tor can no longer be controlled via Modbus (at least
one bit set in fault byte).
Collective signal: Contains the result of a disjunction
(OR operation) of all bits of the register “Fault signals”
(page 27).
0
No faults are active (all bits are cancelled in fault reg-
ister).
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