Allen-Bradley MicroLogix 1000 User Manual

Preface
MicroLogix 1000 Programmable Controllers User Manual
9–6
Note To convert numbers lar ger than 9999 BCD, the sour ce must be the Math Register
(S:13). Y ou must r eset the Minor Err or Bit (S:5.0) to pr event an err or.
Example
The BCD value 32,760 in the math register is converted and stored in N7:0. The
maximum source value is 32767, BCD.
0 0 0 3
2 7 6 0
32760
5–digit BCD
S:14
S:13
0000 0000 0000 0011 0010 0111 0110 0000
N7:0 0111 1111 1111 1000 Decimal
FRD
FROM BCD
Source S:13
00032760
Dest N7:0
32760
MPS displays S:13
and S:14 in BCD.
You should convert BCD values to integer before you manipulate them in your
ladder program. If you do not convert the values, the controller manipulates them as
integers and their value may be lost.
Note If the math register (S:13 and S:14) is used as the sour ce for the FRD instruction
and the BCD value does not exceed 4 digits, be sur e to clear wor d S:14 before
executing the FRD instruction. If S:14 is not clear ed and a value is contained in
this wor d fr om another math instruction located elsewher e in the pr ogram, an
incorr ect decimal value will be placed in the destination wor d.
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Allen-Bradley MicroLogix 1000 Specifications

General

Brand	Allen-Bradley
Model	MicroLogix 1000
Category	Controller
Language	English