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

FMT : STRING       Trace message
ARG1..ARG4 : DINT  Numerical arguments to be included in the trace

Outputs

Q : BOOL  Return check

Remarks

This function works as the famous "printf" function of the "C" language, with up to 4 integer arguments. You can use the following pragmas in the FMT trace message to represent the arguments according to their left to the 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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• Your target platform can support trace functions or not. Please refer to 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 *) 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;