Could not find temp sensors connected via 1-wire hub
not sure is this Mervis or HW issue, but I've recently purchased 2 temp sensors and 1-wire 8 port hub from the shop. I can't see temp sensors in Mervis if they are connected via 1-wire 8 port hub, but if I connect them directly to Neuron (m203) 1-wire port they do work (one by one of course).
I have connected Neuron to hub via patch 5e cable (cable is checked, working), hub is shielded, on the hub itself it's stated port 1 is for IN, so patch cable is on port 1, two temp sensors are on ports 2 and 3.
I configure Mervis the same way like for single temp sensor:
- 1-wire channel added
- PLC to commision mode
- Discover temperature sensors returns empty list/table
When I repeat the same with one temp sensor directly attached on 1-wire on Neuron, everything works OK.
I've also tried to add 2 temp sensors and then to assign them, with the same results, via hub it's not working, directly yes.
Do I need to do something else in Mervis, or any other advice?
@dgajic Do you have the connection of the sensors and the 1wire line from Neuron correctly according to the schematics on the hub?
Port 1 on hub is marked as IN and I have patch cable there connected to 1-wire on Neuron.
Temperature sensors are from the shop, I think they have only 4 pins wired (5-8), and they are connected to ports 2 and 3 of the hub.
So, 3 ports on the hub used (1-3), first 1-wire to Neuron via patch cable and then 2 temp sensors.
Is this correct?
I had to open 1 wire hub, there was a short circuit between pins 3 and 4 on port 8. After fixing that, everything is working OK.
@dgajic Thanks a lot for the info. I am glad you figured it out. Also sorry for the issues!