Siemens SIMATIC Manual page 83

Internal Parameters
Addr Parameter
44.0 DEADB_W
48.0 I_ITLVAL
52.0 LMN_HLM
56.0 LMN_LLM
60.0 PV_FAC
64.0 PV_OFFS
68.0 LMN_FAC
PID Temperature Control
A5E00125039-02
Decl. Data Range of
Type Values
INPUT REAL Dependent
on the
sensors
used
INPUT REAL 0 to 100%
INPUT REAL > LMN_
LLM
INPUT REAL < LMN_
HLM
INPUT REAL
INPUT REAL
INPUT REAL
Initial Description
Value
DEAD BAND WIDTH
0.0
The error passes through a dead
band. The "dead band width" input
decides the size of the dead band.
INITIALIZATION VALUE OF THE
0.0
INTEGRAL ACTION
The output of the integral action
can be set at the I_ITL_ON input.
The initialization value is applied to
the "Initialization value of the
integral action" input. During a
restart
COM_RST = TRUE, the I action is
set to the initialization value.
100.0 MANIPULATED VARIABLE HIGH
LIMIT
The value of the manipulated
variable is always limited to an
upper and lower limit. The
"manipulated variable high limit"
input specifies the upper limit.
0.0 MANIPULATED VARIABLE LOW
LIMIT
The value of the manipulated
variable is always limited to an
upper and lower limit. The
"manipulated variable low limit"
input specifies the lower limit.
1.0 PROCESS VARIABLE FACTOR
The "process variable factor" input
is multiplied by the "process value
periphery". The input is used to
adapt the process variable range.
0.0 PROCESS VARIABLE OFFSET
The "process variable offset" input
is added to the "process variable
periphery". The input is used to
adapt the process variable range.
1.0 MANIPULATED VARIABLE
FACTOR
The "manipulated variable factor"
input is multiplied by the
manipulated variable. The input is
used to adapt the manipulated
variable range.
Appendix
A-5