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Hi,
I have a cable distance of approx. 150m from em24 to Multiplus II (3-PH installation with 3 multipuls II devices). Multiplus II is in basement - wireless comunications are not working there.
The cable (cat6) is extended three times (approx 50m, 70 and 30m lengths).
Will this work? If not - what are my options there?
RS485 is able to be used over very long distances. Use a shielded UTP CAT5e or better cable. Use a twisted pair for the cable.
If you have issues, you can also look into adding a resistor as a terminator but it may not be necessary.
With the ET112, we use CAT5:
1. RS485 orange to orange (make sure it is the orange from the RS485 cable and not the red which looks orange) - Data+
2. RS485 yellow to orange/white - Data-
3. RS485 black to blue - Ground
1. and 2. ensure that the RS485 yellow and orange form a twisted pair.
