The step by step axes control environment for Premium PLCs is made up of 2 modules:

The Control Expert software includes the basic application-specific step by step movement function, used to program these step by step axes control modules.

Basic movements are driven from the machine’s principal sequential control program, but carried out and controlled by the TSX CFY modules.

These modules control the rotation speed of a step by step motor, as well as its accelerations and decelerations, by delivering a frequency control to a translator (fmax = 187 KHz). The translator transforms each pulse into a basic movement of the step by step motor.

Control of the step by step motor is carried out in open loop. End of run, reference point and event inputs allow the module to control the movements of the moving part on the axis.

Some translators include a step failure mechanism: this information is made available to the user program, which can create a new reference point.

The step by step axes control environment also includes the TSX CXP 611 cable to link the TSX CFY11/21 modules directly to the MSD and MS translators from the manufacturer Phyton Lektronik GmbH.