CPU with Dual Homing
The EKE-Trainnet® Central Processing Unit with Dual Homing (CPD) is designed to manage train computers and connected subsystems. In addition to processing, the CPD module also supports the storage of digital media content.
The EKE-Trainnet® CPD can be used to develop, store and run applications for the control and diagnostics of on-board systems, making it suitable to develop Train Control and Management Systems or Vehicle Control Units. It can also implement Gateway functionalities by providing the necessary interfaces and routing capabilities.
Key Features
The CPD’s Dual Homing feature uses two 10/100 Mbit/s full-duplex Ethernet interfaces for connecting to Ethernet networks, typically linking the CPD to switches or electronic equipment. These interfaces can also connect directly to Ethernet-enabled devices, such as network cameras, and support channel bridging. Additional interfaces can be added using EKE-Trainnet® Ethernet Switches.
The EKE-Trainnet® Portable System Tester (PST) interface (usually serial link or Ethernet) enables the use of the PST as well as other tools for event log operations, maintenance, debugging, downloading and application development purposes.
Four programmable isolated asynchronous or bit-synchronous SCC channels are available (RS 485) for the connection to compatible devices in the train.
The EKE-Trainnet® CPD real-time clock is powered by a back-up capacitor and will run for a minimum of 30 days from the time power is no longer applied.
The CODESYS® PLC kernel embedded in the CPU acts as the CPU’s operating software. Train management applications can be developed with the CODESYS® PLC software in order to create the desired control and diagnostic functions of the train. The open platform runs on the Linux Operating system and supports further software development in C language, either as a CODESYS® extension or on top of the module’s Linux kernel. The PowerPC processor provides enough processing power for demanding applications with 400 MHz core speed and 64 megabytes of 64-bit wide 100 MHz SDRAM.
The EKE-Trainnet® CPD has extended event logging flash memory with 4 GB capacity. The EKE-Trainnet® CPD can act as a low cost event recorder when limited protection is required.
