11 PROCESS CONTROL INSTRUCTIONS
11.3 Control Operation Instructions
1285
11
■
Engineering value inverse transformation (1)
The instruction performs the following operations to match the ranges of PH, PL, HH, and LL to the input values (E1).
■
Upper/lower limit check (2)
The upper and lower limits of the input value (E1) are checked under the following conditions.
*1 If ERRI or PHI of disable alarm detection (INH) is set to 1, PHA of ALM and BB2 are set to 0.
*2 If ERRI or PLI of disable alarm detection (INH) is set to 1, the PLA of ALM and BB3 are set to 0.
*3 If ERRI or HHI of disable alarm detection (INH) is set to 1, HHA of ALM is set to 0.
*4 If ERRI or LLI of disable alarm detection (INH) is set to 1, LLA of ALM is set to 0.
■
Variation rate check (3)
• A variation rate check is performed for the duration specified by the variation rate alarm check time (CTIM). The number of
executions of a variation rate check is determined by the following expression.
Set CTIM and
T so that m
2.
No processing is performed when m = 0 (integral part).
Ex.
When m = 4, operations are performed as shown below.
Check item
Condition
ALM
BB2
BB3
Upper limit check
E1 > PH'
PHA = 1
E1
PH' - HS
PHA = 0
0
Others
PHA: The last value is held.
Hold
Lower limit check
E1 < PL'
PLA = 1
E1
PL' + HS
PLA = 0
0
Others
PLA: The last value is held.
Hold
Upper upper limit check
E1 > HH'
HHA = 1
E1
HH' - HS
HHA = 0
Others
HHA: The last value is held.
Lower lower limit check
E1 < LL'
LLA = 1
E1
LL'+HS
LLA = 0
Others
LLA: The last value is held.
(1) 0th time: E1
n
-E1
n-4
(2) 1st time: E1
n
-E1
n-4
(3) 2nd time: E1
n
-E1
n-4
(4) 3rd time: E1
n
-E1
n-4
(5) 4th time: E1
n+4
-E1
n
Ec: Execution cycle
PH'=
×(PH-RL)
RH-RL
100
PL'=
×(PL-RL)
RH-RL
100
HH'=
×(HH-RL)
RH-RL
100
LL'=
×(LL-RL)
RH-RL
100
m=
©
T
CTIM
E1
n
E1
n+1
E1
n+2
E1
n+3
E1
n+4
(1)
(2)
(3)
(4)
(5)
CTIM
DPL
t
Ec
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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