Using ET 200S 1STEP 5V This section contains information on the following topics:Terminal assignment of the 1STEP 5V (S7-300, S7-400)Fundamentals of positioning with stepper motor (S7-300, S7-400)Functions of 1STEP 5V (S7-300, S7-400)1STEP 5V configuration and parameter assignment (S7-300, S7-400)1STEP 5V diagnostics (S7-300, S7-400)