ESD » VME-CAN4-64
Details
| Part Number | VME-CAN4-64 |
|---|---|
| Manufacturer | ESD |
| Category | PRODUCTS-V |
| Price | Request Quote |
| Lead Time | Request Quote |
Description
ESD VME-CAN4-64 I/O Controller - CAN layer according to ISO 11898 with 9-pole DSUBs or DeviceNet interface, SDS Smart Distributed System Simple Type: I/O Controller The VME-CAN4 includes on a VMEbus 6U board 4 complete, independent CAN interfaces to the VMEbus and needs one slot. Each interface is equipped with its own micro controller of type 68331 at 20 MHz clock frequency. Each micro controller has a working memory of 256 kbytes available. After a RESET, the micro controller program code is loaded from the local Flash EPROM. Program updates can be loaded into the Flash EPROM via the VMEbus. The CAN data transfer from and to the VMEbus is performed via a Shared RAM with a capacity of 512 kbytes and FIFOs. Received Rx data generates a local interrupt processed by the belonging micro controller. It stores the data in the Shared RAM and the identifier is stored in the FIFO (FIFO to master).Then it generates a VMEbus interrupt. An individual interrupt vector generates for each of the four CAN channels. To transmit CAN data, the VMEbus master enters the data into the Shared RAM. With this, automatically a pointer to the identifier is stored in the FIFO (FIFO to slave). The belonging micro controller reads FIFO and RAM and starts the data transmission. The included CAN controller of type SJA1000 supports the standard CAN protocol (11 bits identifier) as well as the extended CAN protocol (29 bits identifier). The physical CAN layer is according to ISO 11898 for a maximum baud rate of up to 1 Mbit/s. The baud rate programming can range between 10 kbits/s and 1 Mbit/s via the VMEbus. The CAN channels are electrically isolated from each other as well as from the VME section. Four DC/DC converters perform the local supply of the four channels. With electrical isolation as a standard, esd guarantees a transfer rate of 1 Mbit/s for a bus length of 37 m, if the other CAN participants are equipped with equivalent CAN interfaces. 9-pole DSUB female connectors at the front panel perform connection of the CAN nets. For other layers or connector standards, a piggyback interface is available. Download the datasheet (PDF)
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Specifications
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Datasheet
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