6GK7277-1AA00-0AA0 CSM 1277 | Siemens | Ethernet Switch
Manufacturer: Siemens
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Part Number: 6GK7277-1AA00-0AA0
Condition：New with Original Package
Product Type: Industrial Compact Switch
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Product Description
The Siemens CSM 1277 (6GK7277-1AA00-0AA0) is a compact Ethernet switch module engineered for direct integration with SIMATIC S7-1200 controllers. It expands the controller’s Industrial Ethernet interface, allowing the CPU to connect with up to three additional Ethernet nodes in small to mid-scale automation networks.
Designed as an unmanaged switch, this module provides plug-and-play operation without configuration effort. It is particularly suited for control cabinets where space efficiency, stable communication, and straightforward diagnostics are required.
The module mounts directly onto the S7-1200 CPU, minimizing wiring complexity while maintaining reliable 10/100 Mbit/s Ethernet communication for programming devices, HMIs, and other automation components.
Typical usage includes machine-level networks, compact production cells, and distributed automation systems that rely on deterministic and maintenance-friendly Ethernet connectivity.
Key Functional Characteristics
The CSM 1277 (6GK7277-1AA00-0AA0) enables Ethernet network expansion without external switches. Integrated LED indicators provide immediate visual feedback on power supply and port activity, supporting faster commissioning and troubleshooting.
Its industrial-grade design ensures stable operation across extended temperature ranges, making it suitable for control cabinets in demanding environments.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | CSM 1277 |
| Order Number | 6GK7277-1AA00-0AA0 |
| Product Series | SIMATIC S7-1200 |
| Product Type | Compact Switch Module |
| Ethernet Ports | 4 × RJ45 |
| Data Rate | 10/100 Mbit/s |
| Switch Type | Unmanaged |
| Network Topology | Line, star |
| Power Supply | 24 V DC (external) |
| Current Consumption | 0.1 A |
| Power Dissipation | 1.6 W |
| Diagnostics | LED indicators for power and Ethernet status |
| Degree of Protection | IP20 |
| Operating Temperature | –40 °C to +70 °C |
| Mounting | Direct attachment to S7-1200 CPU |
| Documentation | Electronic Equipment Manual (CD-ROM) |
| Lifecycle Status | Discontinued product |