Connection timed out problem

stephane / modbusino

Small Modbus slave, RTU (serial) for Arduino

http://libmodbus.org

ISC License

142 stars 94 forks source link

Connection timed out problem #22

Open jacobComp opened 1 year ago

jacobComp commented 1 year ago

I use libmodbus for linux and modbusino for my mcu. I realize that mcu does not respond to libmodbus request. As a consequences, libmodbus throw "Connection timed out". How can I solve it. Could you help me? My connection is checked and true. Both circuit common grounded.

jacobComp commented 1 year ago

Not connection wiring* :) (Busy mind)

DamianPe commented 1 year ago

I also have this problem when I try to address one slave just after power up and then another. Let's say my slaves are 22 adn 44. Power up, address 22, then 44. The 22 responds, the 44 not. When I change order - address the 44 after power up and then the 22 - the 44 one responds and the 22 not. Sometimes they both respond, sometimes none. Not a very stable situation...