Technical data

SFBs for Integrated Control
System Software for S7-300/400 System and Standard Functions - Volume 2/2
A5E00739858-01
27-13
Parameter Data Type Values Default Description
PV_IN REAL
-100.0 ...
+100.0 (%)
or phys.
value 1)
0.0 PROCESS VARIABLE IN
An initialization value can be set at the
"process
variable in" input or an external process
variable
in floating point format can be connected.
PV_PER WORD W#16#0000 PROCESS VARIABLE PERIPHERAL
The process variable in the I/O format is
connected to the controller at the "process
variable peripheral" input.
GAIN REAL 2.0 PROPORTIONAL GAIN
The "proportional gain" input sets the
controller
gain.
TI TIME >= CYCLE T#20s RESET TIME
The "reset time" input determines the time
response of the integrator.
DEADB_W REAL
0.0...100.0
(%)
or phys.
value 1)
1.0 DEAD BAND WIDTH
A dead band is applied to the error. The
"dead
band width" input determines the size of the
dead
band.
PV_FAC REAL 1.0 PROCESS VARIABLE FACTOR
The "process variable factor" input is
multiplied
by the process variable. The input is used to
adapt the process variable range.
PV_OFF REAL 0.0 PROCESS VARIABLE OFFSET
The "process variable offset" input is added
to the
process variable. The input is used to adapt
the
process variable range.
PULSE_TM TIME
>= CYCLE
T#3s MINIMUM PULSE TIME
A minimum pulse duration can be assigned
with
the parameter "minimum pulse time."
BREAK_TM TIME
>= CYCLE
T#3s MINIMUM BREAK TIME
A minimum break duration can be assigned
with
the parameter "minimum break time."
MTR_TM TIME
>= CYCLE
T#30s MOTOR ACTUATING TIME
The time required by the actuator to move
from
limit stop to limit stop is entered at the "motor
actuating time" parameter.
DISV REAL
-100.0...100.0 (%)
or phys. value 2)
0.0 DISTURBANCE VARIABLE
For feed forward control, the disturbance
variable
is connected to input "disturbance variable."
1) Parameters in the setpoint and process variable branches with the same unit
2) Parameters in the manipulated value branch with the same unit