Safety specification
Part 3 - Extensions
now released
for comments
until June 22, 2012

Certification at Base Level

Base Level is the lowest PLCopen level which can be certified. Certification is per language, and is done by independent PLCopen accredited Test Institutes The following levels are currently certifiable at Base Level:

	Instruction List, IL
	Structured Text, ST
	Sequential Function Chart, SFC
	Function Block Diagram, FBD

Ladder Diagram (LD) is specified, but the test software is not yet available.