Simple protocol structure

Through the VARAN bus synchronization via phase-locked loop (PLL), distributed clocks according to IEEE 1588 are unnecessary in VARAN. This results in a considerably more simple code structure for VARAN bus components.
The VARAN bus protocol is based on simple read and write processes, through which data is exchanged between the manager and client.

E_MemoryWrite
E_MemoryRead
E_ForeignPackage
E_GlobalWrite

Read and write commands can also be combined into one read/write memory command.

Automatic Device Identification

All devices with a VARAN connection receive an electronic type label, which contains the device-specific data:

  • Vendor-ID
  • Device-ID
  • License number

Customer-specific files, such as a device description, can be stored as a PDF. Devices with an invalid type label or license are deactivated. The bus system is therewith protected against influences from unwanted participants.