| Electronics > Projects, Designs, and Technical Stuff |
| Isolated CAN ground connection |
| << < (5/5) |
| Jeroen3:
I'm a bit rusty on the bit-timings of CAN bus and I never gave it much thought, but does the delay in the isolator reduce the maximum bus length? |
| Dave:
--- Quote from: Jeroen3 on September 06, 2019, 05:43:49 am ---I'm a bit rusty on the bit-timings of CAN bus and I never gave it much thought, but does the delay in the isolator reduce the maximum bus length? --- End quote --- CiA 301 (page 23) states that bus lengths are based on an estimate of 5ns/m propagation delay. So yes, the response time of the isolator should reduce the maximum usable bus length. The isolators supposedly have a 9ns delay in one direction (Si841x/2x - the ones I used in my design), so that should reduce the maximum bus length by just over 7m (communication between two isolated devices). |
| Navigation |
| Message Index |
| Previous page |