466
FX
3G
/FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
16 External FX Device – FNC 80 to FNC 89
16.4 FNC 83 – HEX / ASCII to Hexadecimal Conversion
3. 8-bit conversion mode (while M8161 is ON)
(M8161 is used also for the RS, ASCI, CCD and CRC instructions.)
Each ASCII code stored in the low-order 8 bits of each device
and later is converted into a hexadecimal code,
and transferred to device
and later in 4-digits units. The number of characters to be converted is specified by
"n".
M8161 is also used for the RS, ASCI, CCD 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.
Operation
In the following program, conversion is executed as follows:
Conversion source data
Number of specified characters and conversion result
"
•
" indicates "0".
• When the input data is in BCD format, it is necessary to convert BCD data into binary data after executing this
instruction.
ASCII code
Hexadecimal code
D 200
30H
0
D 201
41H
A
D 202
42H
B
D 203
43H
C
D 204
31H
1
D 205
32H
2
D 206
33H
3
D 207
34H
4
D 208
35H
5
D 102
D 101
D 100
n
1
Does not change
•••
0H
2
••
0AH
3
•
0ABH
4
0ABCH
5
•••
0H
ABC1H
6
••
0AH
BC12H
7
•
0ABH
C123H
8
0ABCH
1234H
9
•••
0H
ABC1H
2345H
S
D
M8161
M8000
FNC 83
HEX
n
S
Command
input
D
8-bit mode
Ignored
Low-order 8 bits
16 bits
Source data
M8161
M8000
FNC 83
HEX
D200
D100
K4
X010
8-bit mode
S
0 0 0 0 0 0 0
0 0 0 0 0 1 0 1 0
D 100
0
A
In the case of "n = K2"
0
0
0
0
1
1
0
0
D 200
30H
→
[0]
1
0
0
0
0
0
1
0
D 201
41H
→
[A]
D
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