1280
11 PROCESS CONTROL INSTRUCTIONS
11.3 Control Operation Instructions
■
Tracking processing (1)
• Tracking processing is performed when all of the following conditions are satisfied.
• If the set value (E2) is the upper loop MV, the TRKF of the disable alarm detection (INH) of the upper loop is set to 1.
■
Variation rate limiter (2)
Variation rate limiter processing performs the following operations, and stores the result in the current ratio value (R
n
).
■
Ratio calculation (3)
The ratio calculation is performed with the following operational expression.
■
Loop stop processing (4)
The following processing is performed according to the SPA status of the alarm detection (ALM).
■
Control cycle determination (5)
If the specified control cycle is not reached, output value (BW) is set to 0 and the S.R instruction is terminated.
If the specified control cycle is reached, "mode determination (6)" is performed.
■
Mode determination (6)
The following processing is performed depending on the control mode (MODE).
Operation error
• The tracking bit (TRK) is set to 1.
• The set value (E2) is used.
• The control mode (MODE) is set to any of the following: MAN, AUT, CMV, CMB, CAB, LCM, LCA, or LCC.
Condition
Operational expression
(SPR-R
n
)
DR
R
n
=R
n-1
+DR
(SPR-R
n
)
-DR
R
n
=R
n-1
-DR
|SPR-R
n
|<DR
R
n
=SPR
SPA status
Processing details
1
The loop stops. When the loop stops, the following operations are performed and the S.R instruction ends.
• The last output value (BW) is held.
• The control mode (MODE) is set to MAN.
0
The loop runs and "control cycle determination processing (5)" is performed.
Control mode (MODE)
Processing details
CAS, CCB, CSV
• If the set value (E2) is specified, engineering value transformation processing (refer to the following
expression) is performed, and then "variation rate limiter (2)" is performed.
• If the set value (E2) is not specified, "variation rate limiter (2)" is performed without performing
engineering value transformation processing.
MAN, AUT, CMV, CMB, CAB, LCM, LCA, LCC
"Tracking processing (1)" is performed.
Error code
(SD0)
Description
3400H
An invalid operation (such as division by zero) is performed.
3402H
The value specified by (s1) or (d2) is a subnormal number or NaN (not a number).
3403H
An overflow has occurred.
3405H
The control cycle (CT) setting is less than 0.
The execution cycle (
T) setting is less than 0.
The value divided the control cycle (CT) by the execution cycle (
T) exceeds 32767.
100
E2=
RMAX-RMIN
×(SPR-RMIN)
BW=
×E1+BIAS
RMAX-RMIN
R
n
-RMIN
SPR=
×E2+RMIN
100
RMAX-RMIN
Содержание MELSEC iQ-R Series
Страница 1: ...MELSEC iQ R Programming Manual Instructions Standard Functions Function Blocks ...
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Страница 24: ...22 INDEX 2092 INSTRUCTION INDEX 2093 REVISIONS 2104 WARRANTY 2105 TRADEMARKS 2106 ...
Страница 34: ...32 MEMO ...
Страница 35: ...33 PART 1 PART 1 OVERVIEW This part consists of the following chapter 1 OVERVIEW ...
Страница 68: ...66 1 OVERVIEW 1 5 Precautions on Programming MEMO ...
Страница 204: ...202 5 SEQUENCE INSTRUCTIONS 5 3 Output Instructions Operation error There is no operation error ...
Страница 470: ...468 6 BASIC INSTRUCTIONS 6 6 Data Conversion Instructions Operation error There is no operation error ...
Страница 472: ...470 6 BASIC INSTRUCTIONS 6 6 Data Conversion Instructions Operation error There is no operation error ...
Страница 479: ...6 BASIC INSTRUCTIONS 6 6 Data Conversion Instructions 477 6 Operation error There is no operation error ...
Страница 504: ...502 6 BASIC INSTRUCTIONS 6 7 Data Transfer Instructions Operation error There is no operation error ...
Страница 518: ...516 6 BASIC INSTRUCTIONS 6 7 Data Transfer Instructions Operation error There is no operation error ...
Страница 520: ...518 6 BASIC INSTRUCTIONS 6 7 Data Transfer Instructions Operation error There is no operation error ...
Страница 754: ...752 7 APPLICATION INSTRUCTIONS 7 9 Real Number Instructions Operation error There is no operation error ...
Страница 756: ...754 7 APPLICATION INSTRUCTIONS 7 9 Real Number Instructions Operation error There is no operation error ...
Страница 758: ...756 7 APPLICATION INSTRUCTIONS 7 9 Real Number Instructions Operation error There is no operation error ...
Страница 760: ...758 7 APPLICATION INSTRUCTIONS 7 9 Real Number Instructions Operation error There is no operation error ...
Страница 895: ...7 APPLICATION INSTRUCTIONS 7 16 Ramp Signal Instruction 893 7 Operation error There is no operation error ...
Страница 917: ...7 APPLICATION INSTRUCTIONS 7 20 Data Processing Instructions 915 7 Operation error There is no operation error ...
Страница 919: ...7 APPLICATION INSTRUCTIONS 7 20 Data Processing Instructions 917 7 Operation error There is no operation error ...
Страница 1415: ...13 SFC PROGRAM INSTRUCTIONS 13 1 SFC Control Instructions 1413 13 Operation error There is no operation error ...
Страница 1448: ...1446 14 REDUNDANT SYSTEM INSTRUCTIONS 14 2 Disabling Enabling System Switching MEMO ...
Страница 1795: ...25 TYPE CONVERSION FUNCTIONS 25 1 Converting BOOL to WORD 1793 25 Operation error There is no operation error ...
Страница 1805: ...25 TYPE CONVERSION FUNCTIONS 25 10 Converting WORD to DINT 1803 25 Operation error There is no operation error ...
Страница 1819: ...25 TYPE CONVERSION FUNCTIONS 25 21 Converting INT to DWORD 1817 25 Operation error There is no operation error ...
Страница 1950: ...1948 32 STRING FUNCTIONS 32 2 Extracting String Data From the Left Right Operation error There is no operation error ...
Страница 1972: ...1970 33 TIME DATA TYPE FUNCTIONS 33 4 Division MEMO ...
Страница 2067: ...APPX Appendix 5 PID Control Program Examples 2065 A 252 Set PID control data for loop 2 ...
Страница 2082: ...2080 APPX Appendix 6 Process Control Program Examples 129 Set the default value of the loop tag ...
Страница 2093: ...APPX Appendix 7 List of Loop Tag Memory Areas Used by Process Control Instructions 2091 A MEMO ...
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