Delta AH500 - Page 613

Chapter 6 Applied Instructions
6-445
API Instruction code Operand
Function
2102 D BCDDA P
S, D
Converting the binary-coded decimal
number into the ASCII code
Device
X Y M S T C HC D L SM SR E PR K 16# “$” DF
S
          
D
      
Pulse instruction 16-bit instruction (5 steps) 32-bit instruction (5 steps)
AH500
AH500
AH500
Symbol:
S
：
Source value Word/Double word
D
：
Device in which the conversion
result is stored
Word
Explanation:
1. The binary-coded decimal number in S is converted into the ASCII code, and the conversion
result is stored in D.
2. The instruction supports SM690, which controls the ending character.
3. The binary-coded decimal value in S used in the 16-bit instruction should be within the range
between 0 and 9999, and should be a four-digit binary-coded decimal value. The operand D
occupies three word devices. The data is converted as follows.
b15
b0
S
Thousands
place
b15
b0
b7 b8
D
D
D
+1
+2
Hundreds
place
Tens place
Units place
b3
b4 b7
b8
b11
b12
ASCII code in
the hundreds place
ASCII code in
the thousands place
ASCII code in
the tens place
ASCII code in
the units place
Ending character (16#0000 or unchanged)
If SM690 is OFF, 16#0000 is stored in D+2. If SM690 is ON, the value in D+2 is unchanged.
4. The binary-coded decimal value in S used in the 32-bit instruction should be within the range
between 0 and 99999999, and should be an eight-digit binary-coded decimal value. The
operand D occupies five word devices. The data is converted as follows.
Ending character (16#0000 or unchanged)
S
b15
b0
b7
b8
D
D
D
D
+1
+2
+3
D
+4
b15
b12 b11
b8 b7 b4
b3
b0
b15
b12 b11
b8 b7 b4
b3
b0
S
+1
Units place
Tens place
Hundreds place
Thousands place
Hundred thousands place
Ten thousands place
Millions place
Ten millions place
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
If SM690 is OFF, 16#0000 is stored in D+5. If SM690 is ON, the value in D+5 is unchanged.
5. Take the binary-coded decimal number 12098 in S for example. The digit in the hundred
thousands place of the number, the digit in the millions place of the number, and the digit in the