Siemens SIMATIC NET S7-1500 CM/CP 1542, 1543, 1545 Comm. Modules

SIMATIC NET communications modules and processors connecting S7-1500 to PROFIBUS, PROFINET and Industrial Ethernet, plus matching SCALANCE switches.

Key features

CM/CP 1542-5: PROFIBUS DP master/slave up to 12 Mbps
CM 1542-1: PROFINET IO controller/device, 2x RJ45
CP 1543-1 / CP 1545-1: Industrial Ethernet with VPN, firewall, IPv6
CP 1545-1 adds cloud connection via MQTT
SIPLUS versions with conformal coating, -40 to +70 °C

Specifications

Brand	Siemens
Product line	SIMATIC NET
Category	PLC Communication Modules
System	SIMATIC S7-1500
Variants listed	9
Source	Siemens Catalog ST 70 · 2026, p. 986-1025

6GK7542-5DX10-0XE0		Type: CM 1542-5 \| Network: PROFIBUS DP master/slave \| Details: S7, PG/OP, data record routing \| Version: Standard
6GK7542-5FX10-0XE0		Type: CP 1542-5 \| Network: PROFIBUS DP master/slave \| Details: PG/OP, smaller quantity structure \| Version: Standard
6GK7542-1AX10-0XE0		Type: CM 1542-1 \| Network: PROFINET IO \| Details: 2x RJ45 100 Mbps \| Version: Standard
6GK7543-1AX10-0XE0		Type: CP 1543-1 \| Network: Industrial Ethernet \| Details: Security, 1x RJ45 10/100/1000 \| Version: Standard
6GK7545-1GX10-0XE0		Type: CP 1545-1 \| Network: Industrial Ethernet \| Details: Security, MQTT, 1x RJ45 1 Gbps \| Version: Standard
6AG1542-5DX10-7XE0		Type: SIPLUS NET CM 1542-5 \| Network: PROFIBUS \| Details: S7, PG/OP, diagnostics \| Version: SIPLUS extreme
6AG1543-1AX10-7XE0		Type: SIPLUS NET CP 1543-1 \| Network: Industrial Ethernet \| Details: Coated, -40...+70 °C \| Version: SIPLUS extreme
6GK5206-2GS00-2AC2		Type: SCALANCE XC206-2SFP G \| Network: Industrial Ethernet switch \| Details: 6x RJ45 1 Gbps, 2x SFP 1 Gbps \| Version: Accessory
6GK5206-2BS00-2AC2		Type: SCALANCE XC206-2SFP \| Network: Industrial Ethernet switch \| Details: 6x RJ45 100 Mbps, 2x SFP \| Version: Accessory

PLC Communication ModulesSiemens

9 product codes available in this family

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Siemens SIMATIC NET S7-1500 CM/CP 1542, 1543, 1545 Comm. Modules

Brand Siemens·PLC Communication Modules

Available part numbers (9)

6GK7542-5DX10-0XE0, 6GK7542-5FX10-0XE0, 6GK7542-1AX10-0XE0, 6GK7543-1AX10-0XE0, 6GK7545-1GX10-0XE0, 6AG1542-5DX10-7XE0, 6AG1543-1AX10-7XE0, 6GK5206-2GS00-2AC2, 6GK5206-2BS00-2AC2

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Siemens SIMATIC NET S7-1500 CM/CP 1542, 1543, 1545 Comm. Modules