Pid And Related Instructions; Pid Control: Pid(270) - Omron CVM1D Operation Manual

PID and Related Instructions

D00000
D00001
D00002
D00003
D00004
D00005
D00006
↓
D00025
D00026

5-24 PID and Related Instructions

5-24-1 PID CONTROL: PID(270)

Ladder Symbol
(270)
PID
Caution
!
Description
Content Coordinate
$C00B
$0000 X
0
$0000 Y
0
$0005 X
1
$0F00 Y
1
$001A X
2
$0402 Y
2
↓ ↓
$05F0 X
12
$1F20 Y
12
In this case, the source word, CIO 0010, contains 0014, and f(0014) = 0726 is
output to R, CIO 0011.
Y
$1F20
$0F00
$0726
$0402
(0,0)
Operand Data Areas
S: Input word
S C D
C: First parameter word
D: Output word
A total of 33 continuous words starting with P1 must be provided for PID(270) to
operate correctly. Also, PID(270) may not operate dependably in any of the fol-
lowing situations: In subroutines, between IL(02) and ILC(03), between
JMP(04) and JME(05), and in step programming (STEP(08)/SNXT(09)). Do not
program PID(270) in these situations.
When the execution condition is OFF, PID(270) is not executed. When the ex-
ecution condition is ON, PID(270) carries out PID control according to the desig-
nated parameters. It takes the specified input range of binary data from the con-
tents of input word S and carries out the PID action according to the parameters
that are set. The result is then stored as the manipulated variable in output word
D.
If the settings are not within the range of the PID parameters, the Error Flag
(A5003) will turn ON and the PID action will not be executed. The Error Flag will
also turn ON if the actual sampling period is two or more times the sampling peri-
od that has been set. In this case, however, the PID action will still be executed.
Bit
15
1 1 0 0 0 0 0 0 0 0 0 0 1 0 1 1
x=S
Output and
input both
binary
(x,y)
$0005 $0014 $001A
CIO, G, A, DM, DR, IR
CIO, G, A, DM,
CIO, G, A, DM, DR, IR
Section 5-24
Bit
00
(m–1 = 11: 12 line
segments)
X
$05F0
317