Siemens ESM, OSM technical specifications Glossary, Fault Mask Filtering ITP Port

Glossary

Autocrossover

Autonegotiation

Auto Polarity Exchange

Autosensing

Backbone

Display Mode

ESM

Fault Mask

Filtering

ITP Port

9

Mechanism with which a TP port is automatically switched over between MDI and MDI-X pinning to establish a connection regardless of the port pinning of the device being connected. This makes the use of crossover cables unnecessary.

The autocrossover function is available only when the port is set to autonegotiation mode.

Procedure standardized by IEEE 802.3 in which the transmission parameters (for example 10/100 Mbps, full/half duplex) are negotiated automatically between the devices.

Procedure in which the module automatically detects incorrect attachment of a cable to the electrical OSM/ESM port (RD+ and RD- swapped over). The OSM then reverses the polarity automatically.

See Autonegotiation

In conjunction with the OSM/ESM, this means a bus or ring structure made up of interconnected OSM or ESM modules that form the backbone of an industrial LAN.

The display mode LEDs indicate the display mode in which the port and power LEDs and the attached input signals (OSMs/ESMs with digital inputs only) of the OSM/ESM are currently working. The display mode can be changed with the button on the front panel of the OSM/ESM.

Electrical Switching Module. SIMATIC NET Ethernet switch with electrical ports

The fault mask specifies which ports (ports 1 - 8) and power supply terminals (line 1/2) are monitored by the signaling contact. The fault mask can be set again with the button on the front panel of the OSM/ESM.

OSMs/ESMs learn the addresses of the devices that can be accessed via a port. They redirect the packets intended for this device only via this port.

Port with Industrial Twisted Pair (ITP) connector (sub D 9-pin female)

Industrial Ethernet OSM/ESM	88
C79000-Z8976-C068-10