Detailed Description of Process Control Language Objects for the T_PROC_CONST_LOOP-Type IODDT
(Original Document)
At a Glance
This section describes the language objects for the T_PROC_CONST_LOOP-type IODDT. These process control language objects are associated with the auto-selector (or self-selecting) loop.
Sample Variable Declaration: T_PROC_CONST_LOOP-type IODDT_VAR1.
Objects
The following table lists all process control language objects associated with the self-selective loop.
Standard symbol
Type
Access
Meaning
Default Value
Address
AT_STEP
REAL
R/W
Auto-tuning step function amplitude
10.0
%MFr.m.c.14
AT_TMAX
REAL
R/W
Auto-tuning step function duration
100.0
%MFr.m.c.16
AT_PERF
REAL
R/W
Criterion for auto-tuning stability.
0.5
%MFr.m.c.18
T_ECH
REAL
R/W
Sampling period (common to both PID's).
0.3
%MFr.m.c.20
OUT1
REAL
R
Hot/Cold or Split Range output 1 command value.
N/A
%MFr.m.c.22
OUT2
REAL
R
Hot/Cold or Split Range output 2 command value.
N/A
%MFr.m.c.24
OUTD
REAL
R
Global loop command variation value.
N/A
%MFr.m.c.26
OUT_MAN
REAL
R/W
Value of global command (loop controller output value selected after processing via OUTRATE and limitations).
N/A
%MFr.m.c.28
OUT_FF_C1
REAL
R
Value of Feed forward action on main loop physical scale.
N/A
%MFr.m.c.30
OUT_MAN_C1
REAL
R/W
Main loop command value.
N/A
%MFr.m.c.32
DEV_C1
REAL
R
Main loop process value setpoint deviation.
N/A
%MFr.m.c.34
PV_C1
REAL
R
PV value on physical scale.
N/A
%MFr.m.c.36
SP_C1
REAL
R
Setpoint value on physical scale.
N/A
%MFr.m.c.38
PV_INF_C1
REAL
R/W
Lower limit of process value
0.0
%MFr.m.c.40
PV_SUP_C1
REAL
R/W
Upper limit of process value
100.0
%MFr.m.c.42
KP_C1
REAL
R/W
PID proportional coefficient / IMC static gain.
1.0
%MFr.m.c.44
TI_C1
REAL
R/W
PID integral time / IMC time constant.
0.0
%MFr.m.c.46
TD_C1
REAL
R/W
PID derivative time / IMC delay.
0.0
%MFr.m.c.48
OUTBIAS_C1
REAL
R/W
Bias on PID loop controller output / IMC BO/BF ratio.
0.0
%MFr.m.c.50
INT_BAND_C1
REAL
R/W
Integral band.
0.0
%MFr.m.c.52
DBAND_C1
REAL
R/W
Dead band on deviation.
0.0
%MFr.m.c.54
KD_C1
REAL
R/W
Derivative Filtering
10.0
%MFr.m.c.56
SP_MIN_C1
REAL
R/W
Lower limit for setpoint
0.0
%MFr.m.c.58
SP_MAX_C1
REAL
R/W
Upper limit for setpoint
100.0
%MFr.m.c.60
PV_LL_C1
REAL
R/W
Lowest threshold for process value
5.0
%MFr.m.c.62
PV_L_C1
REAL
R/W
Lower level for process value
5.0
%MFr.m.c.64
PV_H_C1
REAL
R/W
Upper threshold for process value
95.0
%MFr.m.c.66
PV_HH_C1
REAL
R/W
Highest threshold for process value
95.0
%MFr.m.c.68
RATIO_C1
REAL
R/W
Ratio Value
1.0
%MFr.m.c.70
RATIO_MIN_C1
REAL
R/W
Minimum Ratio Value
0.0
%MFr.m.c.72
RATIO_MAX_C1
REAL
R/W
Maximum Ratio Value
100.0
%MFr.m.c.74
RATIO_BIAS_C1
REAL
R/W
Ratio Bias Value
0.0
%MFr.m.c.76
DEV_L_C1
REAL
R/W
Lower threshold of deviation
-5.0
%MFr.m.c.78
DEV_H_C1
REAL
R/W
Upper threshold of deviation
5.0
%MFr.m.c.80
T_FILTER_C1
REAL
R/W
Process value filtering time
0.0
%MFr.m.c.82
K_FILTER_C1
REAL
R/W
Multiplication coefficient of process value filtering.
1.0
%MFr.m.c.84
FILT_OUT_C1
REAL
R
Filtering output value.
N/A
%MFr.m.c.86
SQRT_OUT_C1
REAL
R
Output value of square root
N/A
%MFr.m.c.88
E2_IN_C1
REAL
R/W
S2 Segment input value.
1428.0
%MFr.m.c.90
E3_IN_C1
REAL
R/W
S3 Segment input value.
2857.0
%MFr.m.c.92
E4_IN_C1
REAL
R/W
S4 Segment input value.
4285.0
%MFr.m.c.94
E5_IN_C1
REAL
R/W
S5 Segment input value.
5714.0
%MFr.m.c.96
E6_IN_C1
REAL
R/W
S6 Segment input value.
7143.0
%MFr.m.c.98
E7_IN_C1
REAL
R/W
S7 Segment input value.
8571.0
%MFr.m.c.100
E2_OUT_C1
REAL
R/W
S2 Segment output value.
14.28
%MFr.m.c.102
E3_OUT_C1
REAL
R/W
S3 Segment output value.
28.57
%MFr.m.c.104
E4_OUT_C1
REAL
R/W
S4 Segment output value.
42.85
%MFr.m.c.106
E5_OUT_C1
REAL
R/W
S5 Segment output value.
57.14
%MFr.m.c.108
E6_OUT_C1
REAL
R/W
S6 Segment output value.
71.43
%MFr.m.c.110
E7_OUT_C1
REAL
R/W
S7 Segment output value.
85.71
%MFr.m.c.112
THLD_C1
REAL
R/W
Totaling limit.
1E+8
%MFr.m.c.114
R_RATE_C1
REAL
R/W
Setpoint speed increase limit
0.0
%MFr.m.c.116
D_RATE_C1
REAL
R/W
Setpoint speed decrease limit
0.0
%MFr.m.c.118
SPEED_LIM_OUT_C1
REAL
R
Setpoint speed limiter output value
N/A
%MFr.m.c.120
INP_INFR1_C1
REAL
R/W
Main loop R1 setpoint low scale.
0.0
%MFr.m.c.122
INP_SUPR1_C1
REAL
R/W
Main loop R1 setpoint high scale.
100.0
%MFr.m.c.124
INP_INFR2_C1
REAL
R/W
Main loop R2 setpoint low scale.
0.0
%MFr.m.c.126
INP_SUPR2_C1
REAL
R/W
Main loop R2 setpoint high scale.
100.0
%MFr.m.c.128
T1_FF_C1
REAL
R/W
Feed Forward process value filtering time
0.0
%MFr.m.c.130
T2_FF_C1
REAL
R/W
Feed Forward process value filtering time
0.0
%MFr.m.c.132
OUT_FF_INF_C1
REAL
R/W
Feed forward process value low limit.
0.0
%MFr.m.c.134
OUT_FF_SUP_C1
REAL
R/W
Feed forward process value high limit.
100.0
%MFr.m.c.136
KP_PREV_C1
REAL
R
Value before proportional coefficient auto-tuning
N/A
%MFr.m.c.138
TI_PREV_C1
REAL
R
Value before integral coefficient auto-tuning
N/A
%MFr.m.c.140
TD_PREV_C1
REAL
R
Value before derivative coefficient auto-tuning
N/A
%MFr.m.c.142
OUT_MAN_C2
REAL
R/W
Secondary loop command value.
N/A
%MFr.m.c.144
DEV_C2
REAL
R
Setpoint Process Value Deviation.
N/A
%MFr.m.c.146
PV_C2
REAL
R
PV value on physical scale.
N/A
%MFr.m.c.148
SP_C2
REAL
R
Setpoint value on physical scale.
N/A
%MFr.m.c.150
PV_INF_C2
REAL
R/W
Lower limit of process value
0.0
%MFr.m.c.152
PV_SUP_C2
REAL
R/W
Upper limit of process value
100.0
%MFr.m.c.154
KP_C2
REAL
R/W
Proportional Coefficient
1.0
%MFr.m.c.156
TI_C2
REAL
R/W
Integral Time
0.0
%MFr.m.c.158
TD_C2
REAL
R/W
Derivative Time
0.0
%MFr.m.c.160
OUTBIAS_C2
REAL
R/W
Bias on PID loop controller output
0.0
%MFr.m.c.162
INT_BAND_C2
REAL
R/W
Integral band.
0.0
%MFr.m.c.164
DBAND_C2
REAL
R/W
Dead band on deviation.
0.0
%MFr.m.c.166
SP_MIN_C2
REAL
R/W
Lower limit for setpoint
0.0
%MFr.m.c.168
SP_MAX_C2
REAL
R/W
Upper limit for setpoint
100.0
%MFr.m.c.170
PV_LL_C2
REAL
R/W
Lowest threshold for process value
5.0
%MFr.m.c.172
PV_L_C2
REAL
R/W
Lower level for process value
5.0
%MFr.m.c.174
PV_H_C2
REAL
R/W
Upper threshold for process value
95.0
%MFr.m.c.176
PV_HH_C2
REAL
R/W
Highest threshold for process value
95.0
%MFr.m.c.178
DEV_L_C2
REAL
R/W
Lower threshold of deviation
-5.0
%MFr.m.c.180
DEV_H_C2
REAL
R/W
Upper threshold of deviation
5.0
%MFr.m.c.182
SQRT_OUT_C2
REAL
R
Output value of square root
N/A
%MFr.m.c.184
THLD_C2
REAL
R/W
Totaling limit.
1E+8
%MFr.m.c.186
R_RATE_C2
REAL
R/W
Setpoint speed increase limit
0.0
%MFr.m.c.188
D_RATE_C2
REAL
R/W
Setpoint speed decrease limit
0.0
%MFr.m.c.190
SPEED_LIM_OUT_C2
REAL
R
Setpoint speed limiter output value
N/A
%MFr.m.c.192
INP_INFR1_C2
REAL
R/W
Secondary loop R1 setpoint low scale.
0.0
%MFr.m.c.194
INP_SUPR1_C2
REAL
R/W
Secondary loop R1 setpoint high scale.
100.0
%MFr.m.c.196
KP_PREV_C2
REAL
R
Value before proportional coefficient auto-tuning
N/A
%MFr.m.c.198
TI_PREV_C2
REAL
R
Value before integral coefficient auto-tuning
N/A
%MFr.m.c.200
TD_PREV_C2
REAL
R
Value before derivative coefficient auto-tuning
N/A
%MFr.m.c.202
OUTRATE
REAL
R/W
Output 1 speed limit.
0.0
%MFr.m.c.204
OUTRATE2
REAL
R/W
Output 2 speed limit.
0.0
%MFr.m.c.206
OUT1_INF
REAL
R/W
Lower limit for Output 1.
0.0
%MFr.m.c.208
OUT1_SUP
REAL
R/W
Upper limit for Output 1.
100.0
%MFr.m.c.210
OUT2_INF
REAL
R/W
Lower limit for Output 2.
0.0
%MFr.m.c.212
OUT2_SUP
REAL
R/W
Upper limit for Output 2.
100.0
%MFr.m.c.214
OUT1_TH1
REAL
R/W
Threshold 1 for Hot/Cold or Split Range output 1
0.0
%MFr.m.c.216
OUT1_TH2
REAL
R/W
Threshold 2 for Hot/Cold or Split Range output 1
50.0
%MFr.m.c.218
OUT2_TH1
REAL
R/W
Threshold 1 for Hot/Cold or Split Range output 2
50.0
%MFr.m.c.220
OUT2_TH2
REAL
R/W
Threshold 2 for Hot/Cold or Split Range output 2
100.0
%MFr.m.c.222
T_MOTOR1
REAL
R/W
Open time for servo-controlled valve
10.0
%MFr.m.c.224
T_MINI1
REAL
R/W
Minimum open time for servo-controlled valve
0.0
%MFr.m.c.226
T_MOTOR2
REAL
R/W
Open time for servo-controlled valve
10.0
%MFr.m.c.228
T_MINI2
REAL
R/W
Minimum open time for servo-controlled valve
0.0
%MFr.m.c.230
KS
REAL
R/W
IMC static gain
1.0
%MFr.m.c.232
OL_TIME
REAL
R/W
Time Constant in OL.
1.0
%MFr.m.c.234
T_DELAY
REAL
R/W
Current pure delay time
0.0
%MFr.m.c.236
CL_PERF
REAL
R/W
OL/CL Ratio
0.1
%MFr.m.c.238
PV_SIM_C1
INT
R/W
Simulated Process Value
N/A
%MWr.m.c.248
PV_SIM_C2
INT
R/W
Simulated Process Value
N/A
%MWr.m.c.249
FF_SIM_C1
INT
R/W
Simulated Feed Forward Input
N/A
%MWr.m.c.250