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+--- Thread: RS485 LM port's limits for device connection (/showthread.php?tid=2964)
RS485 LM port's limits for device connection - AlexLV - 08.11.2020
Hi,
how many devices (in my case Modbus RTU, electrical counters) can be connected to LM RS-485 port(s)?
BR,
Alex
RE: RS485 LM port's limits for device connection - admin - 09.11.2020
Usually up to 31 devices per each port
RE: RS485 LM port's limits for device connection - AlexLV - 09.11.2020
Ok, thanks,
Will use for counters other devices, they allow connect to 64 counters per RS-485 port (many of them in my project)..
Alex
RE: RS485 LM port's limits for device connection - admin - 09.11.2020
If your master device can support up to 64 devices there's no guarantee that counters support this. Even 32 might not work for longer lines and higher bus speeds. One possible solution is to install an RS485 repeater to split the lines into multiple segments. This way you can connect more than 32 devices to each port.
RE: RS485 LM port's limits for device connection - AlexLV - 09.11.2020
Thank you for additional information!
Alex