I want a modbus example of ex_modbus_master.c and ex_modbus_slave.c files with schematic
Last edited by tesla80 on Thu Jan 07, 2010 5:55 pm; edited 1 time in total
tesla80
Joined: 23 May 2007 Posts: 81
Posted: Tue Jan 05, 2010 9:20 am
any help?
FvM
Joined: 27 Aug 2008 Posts: 2337 Location: Germany
Posted: Tue Jan 05, 2010 10:05 am
I didn't hear a real question. The configuration should basically work, I think.
In addition, you should have:
- resistors at the RS-485 bus to set the idle state
- pull-up resistors at the processor Rx pins (can be possibly an internal pullup as well) to force idle state when Tx is enabled.
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum