Omron SYSMAC CJ - REFERENCE MANUAL 08-2008

542
Conversion Instructions Section 3-12
Description NUM4(604) converts the 4 characters of ASCII data in S and S+1 to numeri-
cal data (4-digit hexadecimal) and writes the result to D.
The Error Flag will be turned ON if the ASCII data in S and S+1 contains any
characters that are not hexadecimal digits. In this case, the instruction will not
be executed.
Note If the numerical data is 0, the Equals Flag will turn ON.
If the leftmost bit of the numerical data is 1, the Negative Flag will turn ON.
Restrictions The following restrictions apply to NUM4(604).
■ Restrictions on the CPU Unit
NUM4(604) can be used in CPU Units with unit version 4.0 or later only.
■ Restrictions on the CX-Programmer
NUM4(604) can be used in CX-Programmer version 7 or higher only.
Flags
Indirect DM/EM
addresses in binary
@ D00000 to @ D32767
@ E00000 to @ E32767
@ En_00000 to @ En_32767
(n = 0 to C)
Indirect DM/EM
addresses in BCD
*D00000 to *D32767
*E00000 to *E32767
*En_00000 to *En_32767
(n = 0 to C)
Constants --- ---
Data Registers --- ---
Index Registers ---
Indirect addressing
using Index Registers
,IR0 to ,IR15
–2048 to +2047 ,IR0 to –2048 to +2047 ,IR15
DR0 to DR15, IR0 to IR15
,IR0+(++) to ,IR15+(++)
,–(– –)IR0 to, –(– –)IR15
Area S D
31 32
33 34
1 2 4 3
15 8 7 0
15 8 7 11 12 3 4 0
ASCII
D
S
S+1
Hexadecimal
Name Label Operation
Error Flag ER ON if the source words contain any ASCII characters that
are not hexadecimal equivalents (0 to 9, a to f, or A to F).
OFF in all other cases.
Equals Flag = ON if the result is 0.
OFF in all other cases.
Negative Flag N ON when the leftmost bit of the source data is 1.
OFF in all other cases.