Functions/operations using PROFIBUS PA
11.3 Cyclic data transfer
SIPART PS2 with PROFIBUS communication
196
Operating Instructions, 09/2007, A5E00127926-07
Bit Meaning of "1"
Remarks
3 Emergency operation active
The device is in the manual mode. Representation in
the digital display: MAN or P
4 Deviation of the movement direction
Not required for the positioner.
5 End stop reached (valve completely open)
Not required for the positioner.
6 End stop reached (valve completely closed)
Not required for the positioner.
7 Run time overshoot
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
1
0 The valve is opened.
The "Ventilate actuator" command issued
1 The valve is closed.
The "Depressurize actuator" command issued
2 Parameters were changed.
Set temporarily after switching back from the
"Configuration" mode if one or more parameters were
changed.
3 Simulation mode
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.
4 Not occupied in profile 3.
-
5 Fault in the closed-loop control.
Not required for the positioner.
6 Closed-loop control inactive
Not required for the positioner.
7 Self-monitoring active
Not required for the positioner.
2
0 Path integral exceeded
Set if the set limit for the path integral has exceeded
1 Additional input active
Binary 1 was activated.
2 Additional input active
Binary 2 was activated.
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.
