6ES7155-6AU01-0CN0

High-performance interface module 6ES7155‑6AU01‑0CN0 for scalable ET 200SP systems

The Siemens 6ES7155-6AU01-0CN0 is a PROFINET interface module (IM 155‑6PN/2 HF) designed for the SIMATIC ET 200SP decentralized I/O system. It supports dual PROFINET ports, system redundancy (S2), and enables hot-swapping of connected modules for uninterrupted system operation. With capacity to manage up to 64 ET 200SP I/O modules and 16 additional ET 200AL modules, it provides excellent flexibility and scalability for modern industrial automation environments.

Technical specifications

• Interface type: IM 155-6PN/2 HF

• Communication: PROFINET with 2 integrated switch ports

• Redundancy: Supports S2 redundancy

• Module replacement: Hot-swap capable

• I/O support: Up to 64 ET 200SP modules + 16 ET 200AL modules

• Power supply: 24 V DC (19.2 to 28.8 V range)

• Input current: Max 700 mA

• Inrush current: Max 4.5 A

• Power loss: ~2.4 W

• Address area: Up to 288 bytes for input/output per module

• Isolation test voltage: 707 V DC

• Shortest clock cycle: 250 µs, jitter ≤ 1 µs

• Operating temperature: -30 °C to +60 °C

• Dimensions: 50 mm × 117 mm × 74 mm (W × H × D)

• Weight: ~173 g

Key advantages

• Dual-port PROFINET connection with switch function

• High-availability through S2 system redundancy

• Enables live module replacement (hot-swap)

• Large I/O expansion capacity for complex systems

• Compact and robust for space-constrained installations

• Seamless integration with ET 200SP architectures

Application and use cases of 6ES7155‑6AU01‑0CN0

This interface module is used in industrial automation systems requiring high uptime, modular expansion, and flexible communication. Ideal for distributed control systems, process plants, and automated manufacturing lines where redundant communication and uninterrupted operation are critical.

About the manufacturer

Siemens is a globally trusted manufacturer in industrial automation. Its SIMATIC ET 200SP line offers highly modular, scalable, and powerful I/O systems. The 6ES7155-6AU01-0CN0 module ensures high-performance connectivity and system resilience in demanding applications.