Syntax and Semantics Check during Programming

Introduction

A syntax and semantics check is carried out during program creation. The result of this check is displayed using color objects and text.

Representation of colors and labels:

Color	Description	Example
Black step symbol	Error free step
Blue step symbol	Possible errors are: Input pin not connected Output pin not connected Assigned action variable not declared Assigned `SFCSTEP_TIMES` variable not declared
Filled yellow step symbol (only Online)	Minimum supervision time for the step below limit
Filled magenta step symbol (only Online)	Maximum supervision time for the step exceeded
Black transition symbol	Error free transition variable
Black transition symbol	Error free transition section
Blue transition symbol	Possible errors are: Input pin not connected Output pin not connected
Red wavy line	Assigned transition variable not declared
Black jump symbol	Error free jump
Blue jump symbol	Possible errors are: Input pin not connected Jump target not defined Invalid jump target

If the cursor is placed over faulty text or object, a Quickinfo (Tooltip) with a brief description of the cause of the error appears.