Omron SYSMAC FH Series User Manual page 629

Open For Append As#
Open the file in append mode.
Format
Open <fileName> For Append As #<fileNo>
Parameter
Parameter
Data type
name
Character
<fileName>
string type
<fileNo> Integer type
Return value
None.
Description
Assigns the specified file number in the <fileNo> parameter to the specified file by the <fileName> parameter
and open the file in append mode.
Be sure to execute the Close function to close the file opended with this macro function within the same
subroutine. File accessing processes such as data writing to a file and data reading from a file may not be
completed properly in the following cases.
• The Close function is not executed. The Close function is used in a different subroutine from where this
macro function is executed.
• This macro function is executed at a different timing from the Open function execution.
In the <fileName> parameter, use an absolute path to specify the file name of the file to be opened.
If the file of the file name specified in the <fileName> parameter does not exist, the file is newly created.
If the file of the file name specified in the <fileName> parameter already exists, open the existing file so that
the additional writing in the file is possible.
If a value outside the range of 0 to 15 is specified in the <fileNo> parameter, an "Illegal function call" error will
occur.
If a value outside the range -2147483648 to 2147483647 is specified as an integer parameter, an "Overflow"
error will occur.
If an incorrect data type is specified for a parameter, a "Type mismatch" error will occur.
If a character string longer than 255 characters is specified for a character string parameter, a "String too
long" error will occur.
If the format is written incorrectly, such as writing the macro function name incorrectly, omitting a comma, or
omitting a half-width space, a "Syntax error" error will occur.
Usage Cautions
• None.
Vision System FH/FZ5 Series
User's Manual (Z340)
Absolute path of the file to be opened
Assigned file number (0 to 15) to the opened file
WWW.NNC.IR
Description
8
627
Macro Reference