Delta AH500 - Page 617

Chapter 6 Applied Instructions
6-449
b0
S
S+1
S+2
S+3
S+4
b15
b0
b31
b16
(D+1, D)
S+5
32-bit binary number
ASCII code in
the units place
ASCII code in
the tens place
ASCII code in
the hundreds place
ASCII code in
the thousands place
ASCII code in the
ten thousands place
ASCII code in the hundred
thousands place
ASCII code in
the millions place
ASCII code in
the ten millions place
ASCII code in the
hundred millions place
ASCII code in
the billions place
Sign
Ignored
b7
b8
b15
5. If S used in the 32-bit instruction is a string and the number of characters contained in the
string is less than 11, the characters which the string lacks are regarded as 0. The first
character is a sign character. If the first character is “ ” (a space), the sign is a positive sign. If
the first character is “-”, the sign is a negative sign. Take the string “-0123456789” for example.
b15 b0 b7 b 8
"5"
"7"
"9"
"6"
"8"
S+1
S+2
S+3
"4"
"2"
“(Ignored)”
S+4
b15 b0
32 -bit bin
(D+1,D0)
"1"
"0"
"-"
S+5
S
b31
b16
-123456789
"3"
6. If the value in S is 16#20 or 16#00, the value is processed as 16#30.
7. If the sign character is 16#20, 16#30 or 16#2B, the conversion result is a positive value. If the
sign character is 16#2D, the conversion result is a negative value.
8. If S used in the 16-bit instruction is a string, the number of characters contained in the string
should be within the range between 1 and 6. If S used in the 32-bit instruction is a string, the
number of characters contained in the string should be within the range between 1 and 11.
Example 1:
Suppose the values in D20, D21, and D22 are 16#202D, 16#3220, and 16#3736. When the PLC
runs, the value in D0 is -267.
b15
b0
b7 b8
37(7)16#
16#20( ) 16#2D(-)
16#36(6)
16#20(0)
D0
-267
16#32(2)
D20
D21
D22
(Regarded as -00267)
Example 2:
Suppose the values in D20, D21, D22, D23, D24 and D25 are 16#2020, 16#2020, and 16#3933,
16#3836, 16#3733, and 16#3330. When the PLC runs, the value in D0 is 3968370.