8 APPLICATION INSTRUCTION
8.21 Check Code
643
8
8.21
Check Code
Check code
CCD(P)
These instructions calculate the horizontal parity value and sum check value in the error check methods used in
communication. There is another check method, called CRC (cyclic redundancy check). For obtaining CRC value, use the
CRC(P) instructions.
Setting data
■
Descriptions, ranges, and data types
■
Applicable devices
*1 T, ST, C cannot be used.
Ladder diagram
Structured text
ENO:=CCD(EN,s,n,d);
ENO:=CCDP(EN,s,n,d);
FBD/LD
Operand
Description
Range
Data type
Data type (label)
(s)
Head device number of applicable device
16-bit signed binary
ANY16
(d)
Head device number storing the calculated data
16-bit signed binary
ANY16_ARRAY
(Number of elements: 2)
(n)
Number of data
1 to 32767
16-bit unsigned binary
ANY16_U
EN
Execution condition
Bit
BOOL
ENO
Execution result
Bit
BOOL
Operand
Bit
Word
Double word Indirect
specification
Constant
Others
X, Y, M, L, SM,
F, B, SB, S
T, ST, C, D, W,
SD, SW, R
U
\G
Z
LC
LZ
K, H
E
$
(s)
(d)
(n)
(s)
(d)
(n)
EN
ENO
s
d
n
Summary of Contents for MELSEC iQ-F FX5
Page 1: ...MELSEC iQ F FX5 Programming Manual Instructions Standard Functions Function Blocks ...
Page 2: ......
Page 17: ...15 CONTENTS ...
Page 24: ...22 MEMO ...
Page 1050: ...1048 26 TIME DATA FUNCTIONS 26 4 Division MEMO ...
Page 1068: ...1066 29 COUNTER FUNCTION BLOCKS 29 4 Counter Function Block Operation error There is no error ...
Page 1107: ...I 1105 MEMO ...
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