25.01.2018, 22:50
(This post was last modified: 25.01.2018, 22:55 by Erwin van der Zwart.)
Hi,
EOL termination means placing a resistor parallel over the "end of line", this is required by the Modbus standard to avoid reflections but when using just a 1m cable i don't think it will make a difference.
Are you sure the RS485 port is not called from another process? (like from modbus template and also from script), did you try to restart the controller to be sure there is no old script still loaded?
If that is not the case then i would suggest to test with a new cable between the meter and controller, i would use 2 x 0.8 ..
BR,
Erwin
EOL termination means placing a resistor parallel over the "end of line", this is required by the Modbus standard to avoid reflections but when using just a 1m cable i don't think it will make a difference.
Are you sure the RS485 port is not called from another process? (like from modbus template and also from script), did you try to restart the controller to be sure there is no old script still loaded?
If that is not the case then i would suggest to test with a new cable between the meter and controller, i would use 2 x 0.8 ..
BR,
Erwin