Activity › Forums › Questions & Troubleshooting › Hardware › RS486 and MODBUS RTU › Reply To: RS486 and MODBUS RTU r_merc Member March 22, 2020 at 4:55 am OK here is a new twist on this. If I remove all the digitalWrite() form the sketch I can get the Mast and slave to communicate. With the digitalWrite in the Slave the communications fails. Any Ideas?
