Communication units in vehicles for ETHERNET

General features of Ethernet communication units

At the moment we offer 2 basic types of ECU communication units – five-port and eight-port. They can perform other functions as well and are designed primarily for municipal and regional public transportation. They can be controlled by a processor and perform some other support functions such as controlling the PoE interface (Power over Ethernet) or TPoE (TPoE – target power over Ethernet – targeted powering on of units in an Ethernet network defined by our company), serial lines and one-bit outputs/inputs can be connected to these  communication units.

Production of the four-port version of the switch has been discontinued and replaced by a compatible version ECU 05x.

ECU-0x communication units can perform 3 basic functions (based on the fitting of the printed wiring):

1. Simple unmanaged Ethernet switch – 5 or 8 ports.
2. Can function as a managed Ethernet switch of PoE and TpoE using a processor.
3. Ethernet switch in the IJN role (integrated power supply unit) can also be used to manage vehicle power supply and can also be equipped with  e.g. a GSM/GPRS/UMTS modem or some other module.

Basic features of communication units as Ethernet busbar switches include:

• Unblocked switch architecture distributes and filters packets at full cable speed to ensure maximum throughput.
• Automatic recognition of a wrong cable.
• Auto MDI/MDIX function eliminates the need of twisted cables.
• Meets IEEE 802.3, 10/100M full/half-duplex, supports IEEE 802.1 priority system.
• Throughput up to 2 Gb/s, 64/128 Kbyte SRAM for data, 1000 MAC addresses.
• Management of a full duplex or half-duplex data current.
• Set of functions for VLAN, QS management, MIB.
• Power supply 9 - 32 V.
• Wide range of operation temperatures -30 up to 70 °C.
• Casing IP 30.
• Meets the EMC requirements of ČSN EN 50498, article 7.1. a 7.2. and ISO 7637-2:2004.
• Installation on a DIN fillet in „the lying position“.

Unmanaged Ethernet busbar switches

Unmanaged Ethernet busbar switches are Ethernet communication units designed to be installed in municipal and regional public transportation vehicles. They are equipped with 5/8 RJ-45 ports with automatic MDI/MDX detection (to recognize installation of a twisted / not twisted cable) for 10/100BASE-T. It functions as a network switch with a complex set of functions for switching at the 2. layer. The network architecture is of the Fast Ethernet type. Its installation into a vehicle is exceptionally easy.

	Unmanaged Ethernet busbar switch ECU-05L It is a small Ethernet busbar unit with 5 ports – economical version.
	Unmanaged Ethernet busbar switch ECU-08L-(H/V) It is a small Ethernet busbar unit with 8 ports – economical version.

Managed Ethernet busbar switches with PoE

Managed Ethernet busbar switches are Ethernet communication units designed primarily to be installed in municipal and regional public transportation vehicles. They are equipped with PoE ports with the possibility of remotely controlling the power supply from on-board computers (e.g. EPIS 4.0x, EPIS 5FC etc.). In this case 2 pairs of UTP cable are used to provide power supply which is suitable for e.g. APC passenger counting systems for public transportation (vehicle occupancy surveillance) offered by our company or for contactless chip card validators EVK 5.0.

They function as switches with a complex set of functions for switching at the 2. layer. The network architecture is of the Fast Ethernet type. Its installation into a vehicle is exceptionally easy.

	Managed Ethernet switch with PoE – ECU 08PO Intelligent 8-port communication unit ECU 8PO is a new unit based on ECU 08L containing a control processor. This unit further improves its features, mainly in the field of supplying connected devices with power and at the same time monitoring their state.
	Managed Ethernet switch with PoE – ECU 08P2 Ethernet switch with PoE 48V.