Siemens SIMATIC S7 - Page 583

PID loops and tuning
11.1 PID loop definition table
S7-200 SMART
System Manual, V2.3, 07/2017, A5E03822230-AF
583
Offset
Field
Format
Type
Description
64 Suggested Integral Time
(AT_T
I
)
REAL Out Suggested integral time as determined by the auto-tune
process.
68 Suggested Derivative
Time (AT_T
D
)
REAL Out Suggested derivative time as determined by the auto-
tune process.
72 Actual Step size
(ASTEP)
REAL Out Normalized output step size value as determined by the
auto-tune process.
76 Actual Hysteresis
(AHYS)
REAL Out Normalized PV hysteresis value as determined by the
auto-tune process.