SIMATIC S7-1500 COMPACT CPU CPU 1511C-1PN, CENTRAL PROCESSING UNIT WITH WORKING MEMORY 175 KB FOR PROGRAM AND 1 MB FOR DATA, 16 DIGITAL INPUTS, 16 DIGITAL OUTPUTS, 5 ANALOG INPUTS, 2 ANALOG OUTPUTS, 6 HIGH SPEED COUNTERS, 4 HIGH SPEED OUTPUTS FOR PTO/PWM/FREQUENCY OUTPUT 1. INTERFACE: PROFINET IRT WITH 2 PORT SWITCH, 60 NS BIT-PERFORMANCE, INCL. FRONT CONNECTOR PUSH-IN, SIMATIC MEMORY CARD NECESSARY