Siemens SIMATIC S7-1200

Instructions
9.2 PID_3Step
PID control
Function Manual, 03/2017, A5E35300227-AC
317
Parameter
Data type
Default
Description
Manual_UP BOOL FALSE
• Manual_UP = TRUE
The valve is opened even if you are using Output_PER or
a position feedback. The valve is no longer moved if the
high endstop has been reached.
See also Config.VirtualActuatorLimit
• Manual_UP = FALSE
If you are using Output_PER or a position feedback, the
valve is moved to ManualValue. Otherwise, the valve is no
longer moved.
If Manual_UP and Manual_DN are set to TRUE simultaneous-
ly, the valve is not moved.
Manual_DN BOOL FALSE
• Manual_DN = TRUE
The valve is closed even if you are using Output_PER or a
position feedback. The valve is no longer moved if the low
endstop has been reached.
See also Config.VirtualActuatorLimit
• Manual_DN = FALSE
If you are using Output_PER or a position feedback, the
valve is moved to ManualValue. Otherwise, the valve is no
longer moved.
ErrorAck BOOL FALSE
• FALSE -> TRUE edge
ErrorBits and Warning are reset.
Reset BOOL FALSE Restarts the controller.
• FALSE -> TRUE edge
– Switch to "Inactive" mode
– ErrorBits and Warnings are reset.
• As long as Reset = TRUE,
– PID_3Step remains in "Inactive" mode (State = 0).
– You cannot change the operating mode with Mode and
ModeActivate or ManualEnable.
– You cannot use the commissioning dialog.
• TRUE -> FALSE edge
– If ManualEnable = FALSE, PID_3Step switches to the
operating mode that is saved in Mode.
– If Mode = 3, the integral action is treated as configured
with the tag IntegralResetMode.
ModeActivate BOOL FALSE
• FALSE -> TRUE edge
PID_3Step switches to the operating mode that is saved in
the Mode parameter.