Is it possible to set the clock frequency at BISS protocol (VW3M3402 Encoder interface card with digital output,) or is it fixed?
Clock frequency is not configurable. The min clock frequency is 80kHz. Max permissible clock frequency is not specified in master, but this is done by bus establishment.
During bus establishment:
- the min BISS timeout of the slaves is determined and configured
- the min and max permissible MA clock pulse is deternmined (depends on master, slaves and topology)
- CRC start values are configured in master and slaves
- processing time parameter is configured in the master
- the min cycle time duration is determined (based on bits in data area, processing time, MA clock rate and configured BISS timeout)
During bus establishment:
- the min BISS timeout of the slaves is determined and configured
- the min and max permissible MA clock pulse is deternmined (depends on master, slaves and topology)
- CRC start values are configured in master and slaves
- processing time parameter is configured in the master
- the min cycle time duration is determined (based on bits in data area, processing time, MA clock rate and configured BISS timeout)
Udgivet til: Schneider Electric Danmark
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