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Functions/operations using PROFIBUS PA
11.3 Cyclic data transfer
Bit
Meaning of "1"
3
Emergency operation active
4
Deviation of the movement direction
5
End stop reached (valve completely open)
6
End stop reached (valve completely closed)
7
Run time overshoot
1
0
The valve is opened.
1
The valve is closed.
2
Parameters were changed.
3
Simulation mode
4
Not occupied in profile 3.
5
Fault in the closed-loop control.
6
Closed-loop control inactive
7
Self-monitoring active
2
0
Path integral exceeded
1
Additional input active
2
Additional input active
Remote cascade input
The remote cascade input is used as a setpoint in the remote cascade mode (actual mode =
remote cascade). The remote cascade input comprises the floating point value (4 bytes) and
the status (1 byte).
Remote cascade output
This output delivers the current setpoint in the AUTO and Remote cascade modes. The
status is specially used for the transfer from AUTO to Remote cascade.
In combination with the input variable parameter (primary value scale), not only you can
define the setpoints as a percentage of the valve position, but also in terms of physical
variables such as cubic meter per day or liter per minute. Even the actual values are
adjusted as per this scale.
196
Remarks
The device is in the manual mode. Representation in
the digital display: MAN or P
Not required for the positioner.
Not required for the positioner.
Not required for the positioner.
The device could not be adjusted. Monitoring time and
threshold in the "44.TIM" and "45.LIM" parameters
exceeded, e.g. due to the lack of compressed air
The "Ventilate actuator" command issued
The "Depressurize actuator" command issued
Set temporarily after switching back from the
"Configuration" mode if one or more parameters were
changed.
The simulation mode was released. Master class 2
can overwrite the current actual value, e.g., to test the
response of limits in the control system.
-
Not required for the positioner.
Not required for the positioner.
Not required for the positioner.
Set if the set limit for the path integral has exceeded
Binary 1 was activated.
Binary 2 was activated.
SIPART PS2 with PROFIBUS communication
Operating Instructions, 09/2007, A5E00127926-07
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