Mitsubishi Electric MELSEC FX3G, Programming Manual

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644
FX
3G
/FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
26 Character String Control – FNC200 to FNC209
26.1 FNC200 – STR / BIN to Character String Conversion
Explanation of function and operation
1. 16-bit operation (STR and STRP)
1) All digits (specified by ) of 16-bit binary data stored in are converted into ASCII codes while
the decimal point is added to the position specified by the device storing the number of digits of the
decimal part (
+1), and stored in and later.
2) Set the number of all digits in the range from 2 to 8.
3) Set the number of digits of the decimal part +1 in the range from 0 to 5.
Make sure to satisfy "Number of digits of decimal part <= (Number of all digits -3)".
4) 16-bit binary data to be converted stored in should be within the range from -32768 to +32767.
5) Converted character string data is stored in and later as shown below.
- As the sign, "space" (20H) is stored when the 16-bit binary data stored in is positive, and "-"
(2DH) is stored when the 16-bit binary data stored in is negative.
- When the number of digits of the
decimal part +1 is set to any
value other than "0", the decimal point
"." (2EH) is automatically added in
"number of digits of decimal part + 1"th
digit.
When the number of digits of the
decimal part
+1 is set to "0", the
decimal point is not added.
- When the number of digits of the
decimal part +1 is larger than the
number of digits of 16-bit binary data
stored in
, "0" (30H) is
automatically added, and the data is
shifted to the right end during
conversion.
S
1
S
2
S
1
D
Command
input
FNC200
STR
S
2
‚
S
1
‚
D
‚
5
1
- 1 2 3
S
1
‚
+0
+1
b15
+0
+2
b8 b7 b0
00H is automatically stored at the
end of a character string.
D
‚
S
2 ‚
+1
For number of
all digits
=5
S
1
‚
31H(1)
2EH(.)
00H
2DH(-)
32H(2)
33H(3)
-123
16-bit binary
data
+0
Number of all
digits
Number of digits
of decimal part
Sign
S
1
‚
+0
+1
b15
+2
+3
+4
b8 b7 b0
0000H is automatically stored at
the end of a character string.
D
‚
S
2
‚
16-bit binary
data
+1
For number of
all digits
For value
stored in S
1
‚
ASCII code in "(Value
specifying number of all
digits - 1)"th digit
ASCII code in "(Value
specifying number of all
digits - 3)"th digit
ASCII code in "(Value
specifying number of all
digits - 5)"th digit
ASCII code in "(Value
specifying number of all
digits - 7)"th digit
ASCII code
indicating sign
ASCII code in "(Value
specifying number of all
digits - 2)"th digit
ASCII code in "(Value
specifying number of all
digits - 4)"th digit
ASCII code in "(Value
specifying number of all
digits - 6)"th digit
0000H
S
1
S
1
S
2
D
S
2
S
2
1 2 3
Number of digits of
decimal part
Number of
all digits
4
It is automatically
added.
Number of
digits of
decimal part
16-bit
binary data
6
2
1234
S
1
S
1
0 0 1 2
6
3
12
Number of
all digits
Number of
digits of
decimal part
16-bit
binary data
It is automatically
added.
S
1
S
2