Features:
- Automatic MDI/MDIX permits straight-through Ethernet cables.
- Receive-pair polarity is corrected automatically.
- No switch configuration is required for plug-and-play operation.
The 6GK7377-1AA00-0AA0 switch learns Ethernet source addresses and maintains an address table. Address aging removes entries after the specified interval rather than treating every learned connection as permanent.
Network-terminal devices connect directly to the RJ45 ports of 6GK7377-1AA00-0AA0. The four copper ports do not constitute an optical-fiber interface or a separate PLC backplane connection.
The ambient-temperature allowance for 6GK7377-1AA00-0AA0 decreases at elevated installation altitudes. The sea-level temperature limit should therefore not be applied unchanged to a higher-altitude cabinet.
The Siemens 6GK7377-1AA00-0AA0 CSM 377 Industrial Ethernet Switch may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Siemens 6GK7377-1AA00-0AA0 CSM 377 Industrial Ethernet Switch Manuals,Datasheets,Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Let each connected pair establish its Ethernet link
- Negotiation: The switch negotiates transmission rate and duplex mode with an autonegotiating partner.
- Fixed partner: A partner without autonegotiation must use 10 or 100 Mbit/s half-duplex operation.
- Cable pairs: Automatic crossover assigns the transmit and receive pairs without requiring a crossover cable.
- Polarity: Receive-pair polarity correction operates at the Ethernet connection rather than changing application data.
Read link state separately from power state
- Supply indicator: The green power LED indicates a connected supply; it is off when supply is absent or below the indicated threshold.
- Idle link: A green port indication means a link is present without received data activity.
- Receive activity: A yellow port indication identifies a link with received data.
- Startup test: Synchronous flashing belongs to the power-on self-test indication.
Position the switch outside the backplane path
- Rail type: The mounting arrangement is designed exclusively for the S7-300 rail.
- Station position: Because no backplane-bus feed-through is provided, place the switch at the beginning or end of the station.
- Earth contact: The rear contact and fixing screw connect the module to the rail grounding arrangement.
- Heat exposure: The installation should avoid direct solar radiation and additional heat sources.
Build a line or star without closing a loop
- Line network: Successive Ethernet connections can form a linear bus arrangement.
- Star network: The ports can connect separate branches in a star arrangement.
- Loop prevention: Connecting two ports together, or creating a loop through several switches, can overload the network.
- Cable construction: Permitted link length depends on the FastConnect cable type and any patch-cable section, not only the Ethernet port rating.