Omron E5CN User Manual page 82

Adjustment Level
AT execute/cancel
Function
Example
of use
See
cmwt
Communications writing
Function
Setting
See
72
This parameter executes AT (auto-tuning).
• When you execute auto-tuning, the optimum PID parameters "propor-
tional band," "integral time" and "derivative time" for the set point during
program execution are automatically set by forcibly changing the manipu-
lated variable to calculate the characteristics of the control target
• Normally, this parameter is set to "off". If you press the
the parameter is turned ON and AT is executed.
AT cannot be executed when control has stopped or during ON/OFF con-
trol.
• When AT execution ends, the parameter setting automatically returns to
"off".
Related parameters
"Proportional band" "Integral time" "Derivative time" (adjustment level)
"PID / ON/OFF" (initial setting level)
This parameter enables/disables writing of parameters to the E5CN from the
host (personal computer) by communications.
ON: Writing enabled
OFF: Writing disabled
Default: OFF
Related parameter
"MB command logic switching" (advanced function level) (page 102)
"Communication unit No." "Baud rate" "Data bit" "Parity" "Stop bit" (communi-
cations setting level)
Section 5-4
The E5CN must be in operation, and
control must be 2-PID control.
or
The communication unit (E53-
CNH03) must be mounted on the
E5CN.
.
keys,