Panasonic FP7 Series Command Reference Manual

Operand Parameter name Setting range Setting method
[S+7] Integral time (Ti)
K1 to K30000
(0.1 to 3000 s)
Specify the coefficient used for PID operation. Actual integral
time is set point value × 0.1. The integral operation is not
executed if 0 is specified.
(Note 1)
[S+8]
Control interval
(Td)
K0 to K10000
(0 to 1000 s)
Specify the coefficient used for PID operation. Actual derivative
time is set point value × 0.1. The integral operation is not
executed if 0 is specified.
(Note 1)
[S+9]
Control interval
(Ts)
K1 to K6000
(0.01 to 60.0 s)
Specify the interval for executing the PID operation. The
setting value × 0.01 is the actual control interval.
[S+10]
Auto-tuning
progress status
K0 to K5
When auto-tuning is specified in the operation mode, the
degree of progress of auto-tuning is displayed. The values of
K1 to K5 are stored according to the progress status from the
default value [0], and are returned to the default value after
auto-tuning is completed.
[S+11] to
[S+29]
Work area for
PID operation
- This work area is used by the system program for operation.
(Note 1) If auto-tuning is specified in the control mode, automatic adjustment is carried out, and the set point
value is rewritten.
■
Precautions for programming
● Including the work area for operation, a 30 word area is required for the parameter table.
Ensure that this area value is not rewritten by other instructions.
● Error is not detected even if the parameter table exceeds the area. When specifying [S],
specify a number that is within a minimum of 30 words from the last number.
● Ensure that the area is not exceeded by index modification. Error is not detected even if the
area is exceeded.
● As indicated below, the system does not operate correctly if two or more PID instructions
specifying the same table are described in the program. Even if execution conditions are not
met, PID instructions operate internally using the specified table. In such cases, set the
tables to separate addresses.
■
Precautions when executing auto-tuning
● Auto-tuning may not be executable depending on the process. In that case, the system
returns to the original parameter operation.
● After auto-tuning is completed, the control mode [S] area is automatically rewritten from H
8000 through H 8003 to H 0 through H 3. Ensure that this is not rewritten again by your
program, etc.
10.11 PID (PID Operation)
WUME-FP7CPUPGR-12 10-41

Panasonic FP7 Series Specifications

General

Brand	Panasonic
Model	FP7 Series
Category	Controller
Language	English