Siemens CM 1542-1 PROFINET Communication Module for SIMATIC S7-1500 6GK75421AX100XE0

With dual RJ45 ports delivering full-duplex 10/100 Mbit/s PROFINET connectivity, the Siemens CM 1542-1 communication module expands your SIMATIC S7-1500 PLC into a high-performance network node. It operates as both PROFINET IO controller and device, enabling flexible automation architectures.

Overview

The CM 1542-1 is a dedicated communication processor for the S7-1500 system, engineered for demanding industrial networking. It supports Media Redundancy Protocol (MRP) for ring topologies, ensuring network availability even if a cable or device fails. The module integrates seamlessly with TIA Portal for configuration and diagnostics, and offers extensive communication services including PG/OP, S7, NTP, web server, and IP routing.

What stands out

• Two PROFINET RJ45 ports with 10/100 Mbit/s full-duplex transfer rate
• Dual role: PROFINET IO controller and IO device
• Media Redundancy Protocol (MRP) for enhanced network resilience
• Electrical isolation between PROFINET and backplane bus
• Low power consumption: max 0.3 A from S7-1500 backplane
• Wide operating temperature range: 0 to 60 °C
• IP20 protection for control cabinet installation

Technical details

• Brand: Siemens
• Model: CM 1542-1
• MPN: 6GK7542-1AX10-0XE0
• EAN: 4047623021971
• Product type: Communication module
• System compatibility: SIMATIC S7-1500 PLC
• Network protocol: PROFINET IO
• Number of PROFINET ports: 2
• Port type: RJ45
• Data transfer rate: 10/100 Mbit/s (full duplex)
• Supported services: PG/OP communication, S7 communication, NTP, web server, IP routing
• Redundancy: Media Redundancy Protocol (MRP)
• Power supply: Via S7-1500 backplane bus
• Current consumption: max 0.3 A
• Operating temperature: 0 to 60 °C (horizontal mounting)
• Protection class: IP20
• Mounting: S7-1500 mounting rail
• Electrical isolation: Yes, between PROFINET and backplane
• Firmware update: Via TIA Portal
• Diagnostics: Extensive module and network diagnostics
• Configuration: TIA Portal

Our verdict

The CM 1542-1 is a robust and versatile communication module that brings reliable PROFINET connectivity to S7-1500 systems. Its MRP support and dual-port design make it ideal for building resilient industrial networks, while seamless TIA Portal integration simplifies engineering and maintenance.