328
7 BASIC INSTRUCTIONS
7.5 Data Conversion Instructions
Encoding from 256 to 8 bits
ENCO(P)
These instructions encode the 2
(n)
bits of data from the device specified by (s), and store it in (d).
Setting data
■
Descriptions, ranges, and data types
*1 When using a bit-type label, use a global label assigned to a bit device.
■
Applicable devices
Processing details
• These instructions store into (d) the binary value corresponding to the bit whose value is 1 in the data with 2
(n)
bits.
• When (n) is 0, no processing is performed, and the contents of the device specified by (d) do not change.
• The bit device is handled as a device storing one-bit data and the word device is handled as a device storing 16-bit data.
• If two or more bits are 1, the higher bit position is processed.
Operation error
Ladder diagram
Structured text
ENO:=ENCO(EN,s,n,d);
ENO:=ENCOP(EN,s,n,d);
FBD/LD
Operand
Description
Range
Data type
Data type (label)
(s)
Head device for storing the encode data
Bit/16-bit unsigned
binary
ANY_ELEMENTARY
(d)
Device number for storing the encoding result
16-bit signed binary
ANY_ELEMENTARY
(n)
Valid bit length
1 to 8
16-bit unsigned binary
ANY16
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)
Error code
(SD0/SD8067)
Description
2820H
The device specified by (s) exceeds the corresponding device range.
3401H
The entire data from (s) to 2
(n)
number of bits is 0.
(s) is specified as a bit device and (n) is other than 0 to 8.
(s) is specified as a word device and (n) is other than 0 to 4.
(s)
(d)
(n)
EN
ENO
s
d
n
1 1 0
(d)
7
0
8
6 5 4 3 2 1 0
0
1 0 0 0 0 0 0
(s)
=6
Summary of Contents for MELSEC iQ-F FX5
Page 1: ...MELSEC iQ F FX5 Programming Manual Instructions Standard Functions Function Blocks ...
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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 ...
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