Allen-Bradley 1747-PBASE, Руководство по программированию

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Publication 1746-PM001A-US-P
BASIC Macro Library A-7
String Routines The following table describes the macro CALLs used for string routines.
Table A.7 String Routine Macros
String Routine
Macro CALLs Macro Inputs Outputs
string_repeat(%1,%2) Allows you to repeat a character %1 times and
copy it into $(%2). %1 = Number of times to
repeat the character.
%2 = The string number
containing the character. $(%2) = The new
string.
string_append(%1,%2) Concatenates two strings (%1 and %2), then stores
the result in %2. %1 = Number of string to
be appended.
%2 = Number of the base
string. $(%2) = The
concatenated string.
num_to_str(%1,%2) Converts %1 from a numeric value to a string, then
stores the result in $(%2). %1 = Value to be
converted.
%2 = Number of the base
string. $(%2) = The string
converted data.
str_to_num(%1,%2,%3) Converts (%1) from a string to a numeric value, then
stores the result in (%3). %2 is a validity code. %1 = String number to be
converted. %2 = Validity of
output value.
0 = Value not valid.
1 < Valid Value < 255
%3 = Converted
value.
find_str_in_str(%1,%2,%3) Finds a string within a string. It locates the first
occurrence (position) of the string. %1 = String to be found.
%2 = String to be
searched. %3 = Result
0 = String not found
0 <> Found string
replace_str_in_str(%1,%2,%3) Replaces a string within a string. %1 = String which
replaces the %2 string.
%2 = String to be
replaced.
%3 = Base String number. $(%1) = Base string
insert_str_in_str(%1,%2,%3) Inserts a string into a string. %1 = Position to begin
insertion
%2 = Number of
characters to insert
%3 = Base String number $(%1) = Base string
delete_str_in_str(%1,%2,%3) Deletes a string from a string. %1 = Base string number.
%2 = String number of
string to be deleted. $(%1) = Base string.
get_string_length(%1,%2) Determines the length of a string. %1 = Base string number %2 = String length