IDEC MICROSmart FC6A Series Ladder Programming Manual page 409

Operation status (S1+2)
Indicates the PIDA instruction execution status or error status. It stores the status code.
• X in the table indicates the elapsed time from the start of AT until the set point is reached. X is incremented by 1 every 10 minutes. 9 is
stored if the elapsed time is equal to or longer than 90 minutes.
• x in the table indicates the elapsed time from the start of PID instruction until the set point is reached. x is incremented by 1 every 10
minutes. 9 is stored if the elapsed time is equal to or longer than 90 minutes.
• If an error code (status code value is equal to or greater than 100 and less than 120) is set for the operation status, execution for PID control
is stopped. Set the correct parameters and then turn on the PIDA instruction input once again.
Status Code
1x Auto tuning in progress
2x Auto tuning ended
5x P/PI/PID control in progress
6x Set point is reached (Changes from 5x to 6x onace the set point is reached.)
Output manipulated variable restriction upper limit value < output manipulated
103
variable restriction lower limit value was set.
104
A value was set for the set point that does not satisfy process variable minimum value
106
≤ set point ≤ process variable maximum value.
Process variable > process variable maximum value or process variable < process
109
variable minimum value was set.
120 The control mode was set to a value other than 0 to 3.
121 The sampling period was set to 0 or 10,001 or greater.
122 The proportional band was set to 0 or a value of 10,001 or greater.
123 The derivative gain was set to 0 or a value of 101 or greater.
124 The integral start factor (ARW) was set to a value of 101 or greater.
A value was set for the alarm 1 value (process high alarm) that does not satisfy alarm
125 2 value (process low alarm) < alarm 1 value (process high alarm) ≤ process variable
maximum value.
A value was set for the alarm 2 value (process low alarm) that does not satisfy
126 process variable minimum value ≤ alarm 2 value (process low alarm) < alarm 1 value
(process high alarm).
The output manipulated variable restriction upper limit value was set to a value
127
between 101 to 10,000 or 10,100 to 65,535.
The output manipulated variable restriction lower limit value was set to a value of 101
128
or higher. PID execution continues
129 The output manipulated variable rate of change was set to a value of 101 or higher.
The manual mode output manipulated variable was set to a value that does not satisfy
130 output manipulated variable restriction lower limit value ≤ manual mode output
manipulated variable ≤ output manipulated variable restriction upper limit value.
131 The proportional band offset value was set to a value that is not between -100 to 100. PID control execution continues
132 The control cycle was set to 0 or a value of 501 or greater.
A value was set that does not satisfy process variable minimum value < (set point - AT bias
133
setting value) and process variable maximum value > (set point + AT bias setting value).
The PIDA instruction is executed, and from the second and subsequent scans, a value
134 is set for the set point that does not satisfy minimum value ≤ set point ≤ maximum
value.
135 to 199
200 The alarm type for Alarm 3 was set to a value of 10 or higher.
201 The alarm type for Alarm 4 was set to a value of 10 or higher.
202 The alarm type for Alarm 5 was set to a value of 10 or higher.
203 The alarm type for Alarm 6 was set to a value of 10 or higher.
204 to 209
The action point for Alarm 3 with the set alarm value exceeded the process variable
210
minimum value or maximum value.
The action point for Alarm 4 with the set alarm value exceeded the process variable
211
minimum value or maximum value.
Status Description
— Reserved —
— Reserved —
— Reserved —
FC6A S MICROS L
ERIES MART
P M
ADDER ROGRAMMING ANUAL
19: PID C
ONTROL
Status Classification
AT is normally executed
PID control is normally executed
PID control execution stop
—
PID control execution stop
PID control execution stop
PID control execution continues
PID control execution continues
PID control execution continues
PID control execution continues
PID control execution continues
PID control execution continues
PID control execution continues
PID control execution continues
PID control execution continues
PID control execution continues
PID control execution continues
PID control execution continues
PID control execution continues
PID control execution continues
(Maintains the set point in the normal
range up to the previous scan.)
—
PID control execution continues
PID control execution continues
PID control execution continues
PID control execution continues
—
PID control execution continues
PID control execution continues
FC9Y-B1726
I
NSTRUCTION
19-19