Download Type ACPU/QCPU-A (A Mode)(Common Instructions

6. BASIC INSTRUCTIONS
MELSEC-A
DBCD
Converts BIN data (0 to 99999999) of the device specified at S into BCD and
transfers the result to the device specified at D.
(S) + 1 (Upper 16 bits)
231
230
229
228
227
226
225
224
223
222
221
220
219
218
217
216
215
214
213
212
211
210
29
28
27
26
25
24
23
22
21
20
(S) (Lower 16 bits)
(S) side BIN 99999999
0 0 0 0 0 1 0 1 1 1 1 1 0 1 0 1 1 1 1 0 0 0 0 0 1 1 1 1 1 1 1 1
BCD conversion
Execution Conditions
ON
BCD conversion command
OFF
Executed
per scan
P
Executed
only once
Executed
per scan
Executed
only once
In the following case, operation error occurs and the error flag turns on.
• When BCD instruction is used
The data of source (S) is outside the range of 0 to 9999.
• When DBCD instruction is used
The data of source (S) is outside the range of 0 to 99999999.
6 − 40
Unit digits
Tens digits
Hundreds
digits
(D) (Lower 4 digits)
(D) + 1 (Upper 4 digits)
Operation Errors
x 100
x 101
x 102
x 103
4
2
1
8
4
2
1
8
4
2
1
8
4
2
1
Thousands
digits
Ten thousands
digits
Hundred
thousands
digits
Millions
digits
1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1
Ten millions
digits
(D) side BCD 99999999
4
2
1
8
x 104
x 105
8
4
2
1
8
4
2
1
8
4
2
1
8
x 106
x 107
Be sure to set to 0
(Upper 5 bits)