Mitsubishi Electric FX3G SERIES Programming Manual page 471
Programmable controllers
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Also See for FX3G SERIES:
- User manual (532 pages) ,
- Hardware manual (8 pages) ,
- Quick start manual (2 pages)
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FX
/FX
/FX
Series Programmable Controllers
3G
3U
3UC
Programming Manual - Basic & Applied Instruction Edition
3. 8-bit conversion mode (while M8161 is ON)
(M8161 is used also for the RS, ASCI, HEX and CRC instructions.)
With regard to "n" data starting from
stored to
and
D
M8161 is also used for the RS, ASCI, HEX and CRC instructions. When using the 8-bit mode, set M8161 to normally
ON. M8161 is cleared when the PLC mode is changed from RUN to STOP.
M8000
Command
input
FNC 84
CCD
Example of 8-bit conversion
In the following program, conversion is executed as follows:
M8000
X010
FNC 84
CCD
S
D 100
D 101
D 102
D 103
D 104
D 105
D 106
D 107
D 108
D 109
Total
Horizontal parity
D 0
0
0
0
0
0
0
D 1
S
, the addition data and horizontal parity data of only low-order 8 bits are
+1 respectively.
D
M8161
S
D
n
M8161
D100
D0
K10
Example of data contents
K100
= 01100100
K111
= 0110111 (1)
K100
= 01100100
K 98
= 01100010
K123
= 0111101 (1)
K 66
= 01000010
K100
= 01100100
K 95
= 0101111 (1)
K210
= 11010010
K 88
= 01011000
K1091
1000010 (1)
0
0
1
0
0
0
1
0
0
0
0
0
0
1
0
0
16 External FX Device – FNC 80 to FNC 89
8-bit mode
Ignored
8-bit mode
←
←
←
← When the number of "1" is odd, the horizontal parity is "1".
When the number of "1" is even, the horizontal parity is "0".
0
0
0
1
1
"1091" in BCD
0
0
1
0
1
Horizontal parity
16.5 FNC 84 – CCD / Check Code
16 bits
Low-order 8 bits
Source data
11
12
13
14
15
16
17
18
19
20
469
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