IDEC MICROSmart FC6A Series Ladder Programming Manual page 412

19: PID C I
ONTROL NSTRUCTION
Control output (S3+5)
When PIDA instruction is in auto mode, the control output turns on and off according to the manipulated variable calculated by
the PIDA instruction and the control period (S1+21). When PIDA instruction is in manual mode, the control output turns on and
off according to the manual mode output manipulated variable (S1+17) and the control period.
AT execution (S3+6)
When the execute auto tuning is turned on, auto tuning is initiated. Once auto tuning is finished, it is turned off automatically.
The auto tuning is terminated if it is turned off while auto tuning is executed.
AT complete output (S3+7)
The auto tuning completion output is turned on when the auto tuning is successfully completed.
Alarm 3 output (S3+8)
Turns ON when the process variable (S1+0) is outside the Alarm 3 action (S1+22) range.
Turns OFF when the process variable (S1+0) is inside the Alarm 3 action (S1+22) range. This is read-only data.
Alarm 4 output (S3+9)
Turns ON when the process variable (S1+0) is outside the Alarm 4 action (S1+26) range.
Turns OFF when the process variable (S1+0) is inside the Alarm 4 action (S1+26) range. This is read-only data.
Alarm 5 output (S3+10)
Turns ON when the process variable (S1+0) is outside the Alarm 5 action (S1+30) range.
Turns OFF when the process variable (S1+0) is inside the Alarm 5 action (S1+30) range. This is read-only data.
Alarm 6 output (S3+11)
Turns ON when the process variable (S1+0) is outside the Alarm 6 action (S1+34) range.
Turns OFF when the process variable (S1+0) is inside the Alarm 6 action (S1+34) range. This is read-only data.
19-22 FC6A S MICROS L
ERIES MART
P M
ADDER ROGRAMMING ANUAL
FC9Y-B1726