Search found 6 matches
- Sun Mar 22, 2020 4:55 am
- Forum: Questions & Troubleshooting
- Topic: RS486 and MODBUS RTU
- Replies: 5
- Views: 3613
Re: RS486 and MODBUS RTU
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?
- Sun Mar 22, 2020 3:01 am
- Forum: Questions & Troubleshooting
- Topic: Controllino MAXI not recognized
- Replies: 3
- Views: 2877
Re: Controllino MAXI not recognized
I have a similar set up and one Maxi is com 4 and the other is com 3. Sounds like what you are doing is correct.
- Sun Mar 22, 2020 3:01 am
- Forum: Questions & Troubleshooting
- Topic: Controllino MAXI not recognized
- Replies: 3
- Views: 2877
Re: Controllino MAXI not recognized
I have a similar set up and one Maxi is com 4 and the other is com 3. Sounds like what you are doing is correct.
- Thu Mar 12, 2020 12:05 am
- Forum: Questions & Troubleshooting
- Topic: RS486 and MODBUS RTU
- Replies: 5
- Views: 3613
Re: RS486 and MODBUS RTU
I added some troubleshooting lines to the slave code and discovered that when the line ControllinoModbusSlave.poll(ModbusSlaveRegisters, 8); is called that the controllino resets and starts the sketch again. Sometimes it will run through the loop 2,3 or 4 times and then start over. Anyone have any i...
- Sun Mar 08, 2020 7:14 pm
- Forum: Questions & Troubleshooting
- Topic: RS486 and MODBUS RTU
- Replies: 5
- Views: 3613
Re: RS486 and MODBUS RTU
I was reading and I came across this. So are they talking about modifying Modbus.h? "Modbus Master-Slave library for Arduino (ModbusRtu.h) was taken from the website: https://github.com/smarmengol/Modbus-Master-Slave-for-Arduino It was necessary to modify setting of the PORTJ for pins DE and RE cont...
- Sun Mar 08, 2020 12:39 am
- Forum: Questions & Troubleshooting
- Topic: RS486 and MODBUS RTU
- Replies: 5
- Views: 3613
RS486 and MODBUS RTU
I am trying to run the Example Code and am not getting the slave Controllino Maxi Pure to respond to the master Maxi Pure. I can't figure out what I am doing wrong.