printf

 Function A function calculates a result according to the current value of its inputs. A function has no internal data and is not linked to declared instances. - Display a trace output.

Inputs

Input	Data Type	Range	Unit	Default	Description
FMT	STRING				Trace message.
ARG1.ARG4	DINT				Numerical arguments included in the trace.

Outputs

Output	Data Type	Range	Unit	Description
Q	BOOL			Return check.

Remarks

• This function works like the printf function of the C language, with a maximum of four integer arguments.
• Use the pragmas in the FMT trace message to represent the arguments according to their left to right order:

%ld    signed value in decimal
%lu    unsigned value in decimal
%lx    value in hexadecimal

• The trace message is displayed in the LOG window with runtime In computer science, runtime (or run-time) describes the operation of a computer program, the duration of its execution, from beginning to termination (compare compile time). Within KAS, runtime also refers to the virtual machine that manage the program written in a computer language while it is running messages.
• Trace is supported by the KAS Simulator.

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• The target platform may not support trace functions.
  See the OEM "Original equipment manufacturer" A term that refers to containment-based re-branding, namely where one company uses a component of another company within its product, or sells the product of another company under its own brand. OEM refers to the company that originally manufactured the product instructions for further details on available features.

Example

(* i1, i2, i3, i4 are declared as DINT *)4
i1 := 1;
i2 := 2;
i3 := 3;
i4 := 4;
printf ('i1=%ld; i2=%ld; i3=%ld; i4=%ld', i1, i2, i3, i4);

Output Message

i1=1; i2=2; i3=3; i4=4;