Posted 4 Sep 2018 I using easymodbus library to connect and read data from 3 PLCs CP1L but it run unstablely, sometime it disconnect and i cant re-connect PLC, it give error time out when i try to reconnect when it happen, i restart PLC and everything back to work. Someone please help me. I am new with modbus and omron Share this post Link to post Share on other sites
Posted 16 Oct 2018 It sounds like a timing issue. I would slow down the time between the polling of the PLCs to see if the errors go away. Just a thought, Regards, Garry Share this post Link to post Share on other sites
Posted 17 Oct 2018 On 4/9/2561 at 10:51 AM, underwater said: I using easymodbus library to connect and read data from 3 PLCs CP1L but it run unstablely, sometime it disconnect and i cant re-connect PLC, it give error time out when i try to reconnect when it happen, i restart PLC and everything back to work. Someone please help me. I am new with modbus and omron Please tell more information what is master what are slaves. I assume that you use library from this link. https://www.myomron.com/index.php?action=kb&article=1245 Then you should try connect only 1 slaves and check result if it work properly you shoule edit polling program that have more time on response and check polling condition (e.g. change slave address and registers after other are complete) Share this post Link to post Share on other sites