Mitsubishi MELSEC-Q series Programming Manual page 250

S. AT1
Specified position Symbol
+52
D2
P
+53
+54
I
+55
+56
D
+57
AT1
+70
STEP
+71
Loop tag
MV
*2
memory
+72
AT1ST
+73
+74 AT1
+75 TOUT1
+76 AT1
+77 TOUT2
+0
D3
Local work
––
*3
memory
+21
*1 The data of the item(s) where the values within the recommended range are given in the parentheses are stored by the
system. Users cannot set the data.
*2 The loop tag memory and loop tag past value memory occupy a total of 128 words. (Refer to Page 27, Section 3.3.1 for
details.)
*3 The applications of the loop tag past value memory are indicated below.
Specified position
+0 Sampling cycle counter initial preset flag
S3
+1 Sampling cycle counter
+2 Time-out time counter initial preset flag
+3 Time-out time counter
+4 After maximum slope time-out time counter initial preset flag
+5 After maximum slope time-out time counter
+6 Step manipulated value preset flag
+7 Counter from auto tuning start
+8
Auto tuning start-time PV0
+9
+10
PV
+11
+12
Maximum slope value
+13
+14
Maximum slope-time counter
+15
+16
Maximum slope-time PV
+17
+18
R (Response speed)
+19
+20
L (Equivalent dead time)
+21
When control is to be started from the initial status, the data must be cleared with the sequence program.
*4 The sampling cycle counter, time-out time counter, and after maximum slope time-out time counter round off the data to the
nearest whole number.
(2) Execution cycle ( T)
Set the execution cycle in SD1500 and SD1501 as a real number.
248
Name
Recommended range
Gain 0 to 999999
Integral
0 to 999999
constant
Derivative
0 to 999999
constant
Step
manipulated -100 to 100
value for AT1
Sampling
0 to 999999 Note that
cycle for AT1
Time-out time
0 to 999999 Note that
for AT1
After
maximum
0 to 999999 Note that
slope time-out
time for AT1
System area Used by the system as a work area.
contents
*4
*4
(Last process value)
n-1
*1
Unit
––
s
s
%
AT1ST
32767
s
T
AT1TOUT1
32767
s
T
AT1TOUT2
32767
s
T
––
*4
Data Standard Set
format value by
Real
1.0 S/U
number
Real
10.0 S/U
number
Real
0.0 S/U
number
Real
0.0 U
number
Real
1.0 U
number
Real
100.0 U
number
Real
10.0 U
number
–– –– S