Siemens SIMATIC S7-1200 - Page 648

Technology instructions
10.2 PID control
S7-1200 Programmable controller
648 System Manual, V4.2, 09/2016, A5E02486680-AK
Setting
TO-DB parameter
Data
type
Value range
Description
Proportional
action
weighting
(cooling)
4
"Retain.CtrlParams.
Cool.PWeighting"
Real 1.0 >=PWeighting
>= 0.0
Weighting of the PID
proportional gain for
cooling in either the
direct- or loopback-
control path.
Derivative
action
weighting
(cooling)
4
Retain.CtrlParams.
Cool.DWeighting"
Real 1.0 >=DWeighting
>= 0.0
Weighting of the PID
derivative part for cool-
ing in either the direct-
or loopback- control
path.
Sampling
time of PID
algorithm
(cooling)
1,4
"Retain.CtrlParams.
Cool.Cycle"
Real 100000.0
>=Cycle
> 0.0
Internal call cycle of the
PID controller for cool-
ing.
Rounded to an integer
multiple of the FB call
cycle time.
Deadband
width (cool-
ing)
3,4
"Retain.CtrlParams.
Cool.DeadZone"
Real DeadZone>= 0.0 Width of the deadband
for cooling control devi-
ation