Omron CXONE-ALC-V4 - 10-2010 Operation Manual page 60

Basic PID (Block Model 011)
44
$W2047=GETNUMVAL () ;
WRITECMEM ([LL_SP/L_SP/H_SP/HH_SP],$W2047,1) ;
3: Parameter Settings
These fields are used to display and set each parameter. The following table
shows the tag ITEMs used to set these parameters.
Parameter
P (Proportional band)
I (Integral time)
D (Differential time)
MH (High MV limit)
ML (Low MV limit)
MV index position
Numeral Display and Input objects are used to create these fields, and a ten-
key pad is displayed when a field is touched. The following table shows the
upper and lower limits of the setting ranges.
Parameter
P (Proportional band)
I (Integral time)
D (Differential time)
MH (High MV limit)
ML (Low MV limit)
MV index position
The following table shows the units that are displayed. These units are fixed.
Parameter
P (Proportional band)
I (Integral time)
D (Differential time)
MH (High MV limit)
ML (Low MV limit)
MV index position
The following values are used in communications between the PLC and NS-
series PT.
Parameter
P (Proportional band)
I (Integral time)
D (Differential time)
MH (High MV limit)
ML (Low MV limit)
MV index position
Data is written to the write address of each tag ITEM using a Before Writing
Numeral/String macro, as follows:
$W2047=GETNUMVAL () ;
WRITECMEM ([P/I/D/MH_LMT/ML_LMT/MV_IDX],$W2047,1) ;
Tag ITEM
P (ITEM 054)
I (ITEM 055)
D (ITEM 056)
MH_LMT (ITEM 076)
ML_LMT (ITEM 077)
MV_IDX (ITEM 098)
Upper limit
0.1
0
0
−320.00
−320.00
−15.00
Unit
%
S
S
%
%
%
Values used in PLC device/communications
1 to 9999 (10 x display value)
0 to 9999 (same as display value)
0 to 9999 (same as display value)
Percent data
Percent data
Percent data
Section 6-1
Lower limit
999.9
9999
9999
320.00
320.00
115.00