Siemens 6GK7277-1AA00-0AA0 CSM 1277 Switch Module
Manufacturer: Siemens
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Part Number: 6GK7277-1AA00-0AA0
Condition：New with Original Package
Product Type: Communication Modules
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Siemens CSM 1277 6GK7277-1AA00-0AA0 SIMATIC S7-1200 Compact Switch Module
The Siemens CSM 1277 (6GK7277-1AA00-0AA0), also cataloged as the CSM 1277 Compact Switch Module, operates as a dedicated hardware component for Industrial Ethernet expansion within SIMATIC S7-1200 platform environments. It interfaces directly with controller CPUs to provide unmanaged local port extension across Ethernet network nodes.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 6GK7277-1AA00-0AA0 |
| Brand | Siemens |
| Origin | Consult Factory |
| Weight | Consult Factory |
| Dimensions | Consult Factory |
| Operating Temp | -40 to +70 deg C |
| Power Consumption | 1.6 W |
| Ethernet Ports | 4 x RJ45 |
| Data Rate | 10/100 Mbit/s |
| Power Supply | 24 V DC (external) |
| Current Consumption | 0.1 A |
Backplane Bus Communication and Firmware Flash Compatibility
The module integrates directly with the SIMATIC S7-1200 controller assembly, leveraging high-speed backplane bus communication velocity to manage local data traffic across its four RJ45 ports. System engineers utilize its fixed-port unmanaged architecture to establish reliable line and star topologies without manual node configuration. Furthermore, strict firmware flash compatibility ensures that network handshakes remain synchronized across connected programming devices, HMIs, and distributed automation components.
Frequently Asked Questions
Q: Can the CSM 1277 switch module be hot-swapped while the S7-1200 control panel is energized?
A: Hot-swapping is restricted while external 24 V DC power and active Ethernet connections are present, as unmitigated electrical transients can damage the internal PHY transceiver chips. Always isolate power prior to module extraction.
Q: Does the CSM 1277 require software configuration before deployment?
A: No configuration is required, as the device operates as a plug-and-play unmanaged switch designed to extend local Ethernet connectivity automatically upon energization.
Field Installation Guidelines
Mount the switch module directly onto the left side of the SIMATIC S7-1200 CPU or preceding signal modules, ensuring that the mechanical slide latches engage completely. Connect an external 24 V DC power supply to the designated terminals, verifying correct polarity before system startup. Route Industrial Ethernet cables away from high-voltage power conduits and variable frequency drives to prevent electromagnetic interference from degrading 10/100 Mbit/s data transmission.