Siemens 6GK7243-1BX30-0XE0 WAN Communications Processor

Siemens 6GK7243-1BX30-0XE0 CP1243-1 WAN Communications Processor adds an additional Ethernet interface to SIMATIC S7-1200 PLCs and enables secure WAN connectivity to control centers for telecontrol and remote monitoring. The module provides a single 100 Mbit/s RJ45 Ethernet interface, powered from the backplane bus (5 V) with a typical current draw of 0.25 A and about 1.25 W of power loss. It supports telecontrol and telemetry protocols such as DNP3, IEC 60870, and TeleControl Basic, and includes built-in security features like firewall and VPN to protect remote connections and data in transit. Designed to extend network reach without replacing the CPU’s native Ethernet port, it is commonly used for remote SCADA access, secure data exchange with field devices over WAN, and direct integration with control centers for telecontrol applications.