This article presents some guidelines for producing new types of constructions and pattern effects on the RJPC 4F net curtain raschel machine. Whereas, on the models which preceded the RJPC 4 F raschel machine, each revolution of the main shaft or stitch-forming process followed a control signal and a needle movement was executed, a new feature of this system is that either one or two signals can be emitted. However, if the machine's computer is used to stipulate that two control signals should be emitted, then this changes the patterning technology and also the way in which the pattern data are created and the data have to be produced in a different way. The procedures for doing this are described in the article.