Omron SYSMAC C200H-ASC02, Руководство по эксплуатации

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Appendix D
Formatting and Data Conversion
Memory Area Designators for PC READ/PC WRITE Statements
Memory Area Designator Address Range
@R IR Area 0000 to 0255 PC READ
0000 to 0252 PC WRITE
@H HR Area 0000 to 0099
@A AR Area 0000 to 0027
@L LR Area 0000 to 0063
@G TC Area 0000 to 0511
@D DM Area 0000 to 1999
Formatting and Data Conversion
Format Meaning Name
m I n nth byte of m decimal words
I format
m H n nth byte of m hexadecimal words
H format
m O n
nth byte of m octal words
O format
m B n
nth bit of of m binary words
B format
m A n
nth byte of m ASCII words
A format
Sm X n
nth bit/byte X (where X could be I, H, O or B) of m words
S format
Remarks:
When m is omitted, the default value is one.
When using the A format, one format designator corresponds to only one variable in the variable list: e.g., the
first format designator corresponds to the first variable in the list, the second format designator corresponds to
the second variable in the list, etc.
In all formats except A and S, one format designator can apply to many variables. For example:
“5H2”; A, B, C, D, E
This is the same as “1H2, 1H2, 1H2, 1H2, 1H2”; A, B, C, D, E.
All format designators must be in uppercase characters.
Under normal conditions, the maximum number of words that can be transferred at one time is 255. When
using the A or B formats, however, the maximum number of words that can be transferred is between 50 and
60.
I Format (mIn)
This format is used for decimal numbers (0 to 9):
m : number of words
I : decimal format designator
n : the nth digit of the word
Digit n Bit
15 14 13 12
11 10 9 8 7 6 5 4 3 2 1 0
1 – – –
x 10
0
2 – –
x 10
1
x 10
0
3 –
x 10
2
x 10
1
x 10
0
4 x 10
3
x 10
2
x 10
1
x 10
0