Siemens 6GK7545-1GX00-0XE0 SIMATIC S7-1500 CP 1545-1 Industrial Ethernet Communications Processor

The Siemens 6GK7545-1GX00-0XE0 CP 1545-1 is a communications processor that connects a SIMATIC S7-1500 CPU to Industrial Ethernet through a single RJ45 port running from 10 to 1000 Mbit/s. It adds TCP/IP, S7 communication, and MQTT cloud connectivity to the CPU, plus a stateful firewall with IPSec VPN for up to 16 secured connections, and up to eight modules can run per CPU depending on CPU type.

Technical Specifications

Certifications & Standards

• CE
• UKCA
• cULus
• KC
• RCM
• RoHS
• EAC
• ATEX
• IECEx
• ULhazloc

Selection Notes

The 16-connection IPSec VPN and stateful firewall make the CP 1545-1 the module to add when an S7-1500 station needs a protected remote-access or cloud path rather than plain Ethernet exposure through the CPU's integrated port. Its MQTT client and 500-data-point limit fit periodic telemetry to a cloud broker, not high-frequency process data acquisition. Because up to eight modules can share one CPU (the exact count depends on CPU type), a station that needs several isolated network segments - for example a plant network plus a separate maintenance VPN - can add a second or third CP 1545-1 instead of routing everything through one interface.