RS-485 baud rates

[Paul Rylatt]

For RS-485 on the Visilogic V130 units, if the unit is being used by as a slave only, will setting the baud rate to 115,200 allow it to talk to Masters set on a lower baud rate. I cannot find anything in the literature that verifies or contradicts this.

[Joe Tauser]

I'm guessing you're using the device as a Modbus slave.  The user baud rate is set in the COM INIT block.  If you try to connect with Visilogic at 115,200 it will still work at the lower baud.

 

If you're worried about it, you can retrigger the COM INIT back at the lower baud rate it will drop back down for sure.  You can even have multiple COM INITs, the last one to be triggered will win.

 

Joe T.