Siemens SIMATIC Manual page 82

Appendix
Addr Parameter Decl.
24.2 QLMN_LLM OUTPUT BOOL
24.3 QC_ACT OUTPUT BOOL
26.0 CYCLE INPUT/
OUTPUT
30.0 CYCLE_P INPUT/
OUTPUT
34.0 SP_INT INPUT/
OUTPUT
38.0 MAN INPUT/
OUTPUT
42.0 COM_RST INPUT/
OUTPUT
42.1 MAN_ON INPUT/
OUTPUT
A-4
Data Range of Initial
Type values Value
FALSE
TRUE
≥ 0.001 s
REAL 0.1 s
≥ 0.001 s
REAL 0.02 s
REAL Depen- 0.0
dent on
the
sensors
used
REAL 0.0
BOOL FALSE
BOOL TRUE
Description
LOW LIMIT OF MANIPULATED
VARIABLE REACHED
The value of the manipulated variable
is always limited to an upper and
lower limit. The QLMN_LLM output
indicates when the lower limit is
exceeded.
NEXT CYCLE, THE CONTINUOUS
CONTROLLER IS WORKING
This parameter indicates whether or
not the continuous controller stage
will be executed at the next block call
(relevant only when SELECT has the
value 0 or 1).
SAMPLE TIME OF CONTINUOUS
CONTROLLER [s]
This sets the sampling time for the
PID algorithm. The tuner calculates
the sampling time in Phase 1 and
enters this in CYCLE.
SAMPLE TIME OF PULSE
GENERATOR [s]
At this input, you enter the sampling
time for the pulse generator stage.
FB 58 "TCONT_CP" calculates the
sampling time in Phase 1 and enters
it in CYCLE_P.
INTERNAL SETPOINT
The "Internal Setpoint" input is used
to specify a setpoint.
MANUAL VALUE
The "Manual Value" input is used to
specify a manual value. In automatic
mode, it is corrected to the
manipulated variable.
COMPLETE RESTART
The block has an initialization routine
that is processed when the
COM_RST input is set.
MANUAL OPERATION ON
If the "Manual Operation On" input is
set, the control loop is interrupted.
The MAN manual value is set as the
value of the manipulated variable.
PID Temperature Control
A5E00125039-02