To improve the quality of developed software for the controller is proposed to take into account the principles of programming in FBD and CFC. Gives practical recommendations for the use application of. Especially, this approach is acquitted for complex systems of automatic control and regulation of high risk. The proposed method reduces the requirements for qualification of personnel, increases productivity in extreme situations, reduces the possibility of errors in the adjustment programs.

Keywords: Programming principles, identity numbering algoblocks similar algorithms, the in-between software cleat, the principle of non-rigid numbering, quality and reliability of software.