05.10.2022, 12:25
(This post was last modified: 05.10.2022, 12:26 by manos@dynamitec.)
(05.10.2022, 12:15)admin Wrote: Ideally a bus topology should be used. 120 Ohm termination resistors at both ends are required for long lines. If there are branches/stubs, then they must be kept as short as possible. Or use a repeater for long branches, this way you can connect more than 31 devices per line.
Thank you admin for clarification. I knew about the 120 Ohm in the end of the line but I thought on LM side that the resistor was onboard.
So as you suggest we will have to add two resistors then between A-B , one on the LM port and one in the end of the line.
(05.10.2022, 12:24)admin Wrote: This LM model has 3x RS485: https://openrb.com/logicmachine5-power-dr/
OK I see now.
Thank you both for the great and quick support
.