Product number (marketing number) 6GK7542-1AX00-0XE0 Product description Communication module CM 1542-1 for connecting S7-1500 to PROFINET as IO controller or IO device: TCP/IP, ISO-on-TCP, UPS, S7 communication, IP-Broadcast Multicast, SNMPV1, time Synchronization via NTP, 2xRJ45 (10/100 Mbit). Product Family CM 1542-1