Siemens Electrical Lean Switch Ports and Displays of the ELS TP80, TP Ports

Ports and Displays

4.3Ports and Displays of the ELS TP80

4.3.1TP Ports

Pinning

On the ELS TP80, the TP ports are implemented as RJ-45 jacks with the MDI-X pinning (Medium-Dependent Interface Autocrossover) of a network component.

Notice

TP Cords or TP-XP Cords with a maximum length of 10 m can be connected to the RJ-45 TP port. In conjunction with IE FC Outlet RJ-45, a total cable length of

100 m is permitted.

Autonegotiation

Autonegotiation means the automatic detection of the functionality of the port at the opposite end. Using autonegotiation, repeaters or DTEs can detect the functionality available at the port of a partner device allowing automatic configuration of different types of device. With autonegotiation, two components connected to a link segment can exchange parameters and set themselves to match the supported communication functionality.

Note

The ELS TP80 is a Plug and Play device that does not require settings to be made when it is installed.

MDI /MDIX Autocrossover Function

The advantage of the MDI /MDI-X autocrossover function is that straight-pinned cables can be used throughout and crossover cables are unnecessary. This prevents malfunctions resulting from mismatching send and receive wires. This makes installation much easier for the user.

The Ethernet Switch chips used in the ELS all support the MDI / MDI-X autocrossover function.

Note

Ports of partner stations not supporting autonegotiation must be set to 100 Mbps/ half duplex or 10 Mbps half duplex.

32	Industrial Ethernet
	A5E00152007-03