Automatic control function programming manual ladder language

Transparent Mode
Operation
Sends a buffer of bytes to the system screen (the buffer can contain graphic commands).
The display stops according to the value of n.
If n == 0: The display stops on the first ZERO byte (ZERO byte not displayed).
If n > 0: The display stops after n bytes.
Return code
If OK
Returns the number of characters transmitted.
Error
-1: Not in transparent mode, the calling task is not a %TF task.
-2: Max. buffer size (512 bytes) exceeded.
Programming error causing a CPU fault
Access to a prohibited address:
- &source parameter error,
- &source+n outside authorised area.
8.2.5 Display a Character String with Formatting printf
Syntax
printf(&format {, argn}6)
&format Format string address.
argn: Possible argument.
Displays a string, converting any arguments (the string must not contain graphic commands).
Function printf() supports ANSI standard C language conversion specifications.
Operation
The format string contains displayable characters and possibly specifications for argument conversions.
Function printf() analyses the characters of the format string.
If the character is displayable, printf() copies it into a work buffer.
When printf() detects the character %, it analyses the following characters which indicate the conversion required on
the corresponding argument. The displayable characters resulting from conversion of the argument are stored in the
work buffer.
When printf() detects the end of the format string (ZERO byte), it sends the buffer to the task handling display on the
CNC screen.
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