Automatic control function programming manual ladder language

Operation
Each argument &argn must be the address of a variable %M, %V, %Q or %W.
For specification of the conversion format, refer to function printf() (see Sec. 8.2.5).
Return code
If OK
Number of parameters effectively loaded.
Error
0: Unsuccessful analysis of the source string, format string containing
invalid formats.
Programming error causing a CPU fault
Access to a prohibited address:
- &sourcestring parameter error,
- &formatstring parameter error,
- &argn parameter error for %d, %E, %C, %f, %G, %g, %i, %n, %o, %P, %u, %X or %x,
- &argn parameter error for %s,
- end of string outside authorised area.
6.30 Compare Two Character Strings strcmp
Syntax
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strcmp(&string1, &string2)
&string1: String 1 address.
&string2: String 2 address.
Compares two strings ending with a ZERO byte.
Return code
If OK
n == 0 String 1 == string 2.
n > 0 String 1 > string 2 (byte i of string 1 > byte i of string 2).
n < 0 String 1 < string 2 (byte i of string 1 < byte i of string 2).
Programming error causing a CPU fault
Access to a prohibited address:
- %string1 parameter error,
- %string2 parameter error,
- end of string outside authorised area.