Parameter; Parameter List: (S3) To (S3) + 28 - Mitsubishi Electric FX3G User Manual

FX /FX /FX /FX /FX
3S 3G 3GC 3U 3UC
PID Instruction (FNC 88)
3.

Parameter

This chapter describes various parameters of PID instruction.
3.1

Parameter List: (S3) to (S3) + 28

Set item
Sampling time (T
S
3
Operation
S +1
3
setting (ACT)
Input filter constant (α)
S +2
3
Proportional gain (K
S +3
3
Integral time (T )
S +4 I
3
Differential gain (K
S +5
3
Differential time (T
S +6
3
S +7
3
: These devices are occupied for internal processing of PID operation. Do not change data.
S +19
3
PLC User's Manual - Analog Control Edition
Setting
) 1 to 32767 (ms)
S
0: Forward operation
bit0
1: Backward operation
0: Input variation alarm is invalid.
bit1
1: Input variation alarm is valid.
0: Output variation alarm is invalid.
bit2
1: Output variation alarm is valid.
bit3 Not available
0: Auto-tuning is not executed.
bit4
1: Auto-tuning is executed.
0: Upper and lower limits of output
value are not valid.
bit5
1: Upper and lower limits of output
value are valid.
0: Step response method
bit6
1: Limit cycle method
bit7 to bit15 Not available
0 to 99 (%)
) 1 to 32767 (%)
P
0 to 32767 (× 100 ms)
) 0 to 100 (%)
D
) 0 to 32767 (× 10 ms)
D
3.1 Parameter List: (S3) to (S3) + 28
Remarks
It cannot be shorter than operation
cycle of the PLC.
Operation direction
Do not set to ON bit 2 and bit 5 at
same time.
Do not set to ON bit 2 and bit 5 at
same time.
Select auto-tuning mode.
When "0" is set, input filter is not
provided.
When "0" is set, it is handled as "∞"
(no integration).
When "0" is set, differential gain is
not provided.
When "0" is set, differential is not
executed.
3 Parameter
K
L
M
Reference
Subsection
3.2.1
Subsection
3.2.2
Subsection
3.2.3
Subsection
3.2.4
Subsection
3.2.5
Subsection
3.2.6
Subsection
3.2.7
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M-7