Using the modbus-flex-getter node to read data from multiple devices at the same time can become laggy

[Colin]

As I said, wire them up in series then you can make it go as fast as it will go without risk of overlapping comms. It is very easy, just use the response from the first modbus node to trigger the second function node.

If you are using rs485 then you may also have to allow a short time between the transactions for the bus to switch over. If so then insert a delay node in front of the second and third function nodes.