SIMATIC S7-1500, TM PTO 4 interface module for stepper drives 4 channels Pulse Train Output PTO: 24 V, RS-422, 5V, 2 DI, 1 DQ 24VDC per channel SIMATIC ET 200MP is a modular, scalable and universally applicable I/O system in IP20 and offers the same system advantages as the S7-1500. It allows the shortest bus cycle times and the fastest response times even with large quantities. The decentralized I/O system is particularly easy to install, wire and commission. The scalable design allows you to tailor the I/O station precisely to the specific needs on site. Technology modules offer hardware-based signal preprocessing for fast counting, precise measuring, position detection and pulse width modulation for different encoders and actuators and the control of stepper motor drives and servo drives via the PTI interface.