several PZEM004T to esp or just one

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BartSr
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several PZEM004T to esp or just one

#1 Post by BartSr » 18 Feb 2024, 22:40

Hi!
I have read lots of forum data about PZEM004T v3.
Now I wonder about current status of hooking up numeric devices to just one esp.
As I want to monitor almost every circuit in my main distribution a single esp might be great solution.
Thanks for your thoughts.
Bart

BartSr
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Posts: 118
Joined: 27 Sep 2019, 17:45

Re: several PZEM004T to esp or just one

#2 Post by BartSr » 20 Feb 2024, 23:10

No advices?

TD-er
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Re: several PZEM004T to esp or just one

#3 Post by TD-er » 20 Feb 2024, 23:29

Well as far as I know is this a modbus sensor.
So in theory you can have multiple connected to the same serial bus and each should be assigned an unique modbus address.
However I don't know for sure is the ESPEasy implementation of it does address the sensor at its specific address (or the standard "broadcast" address) and also how the modbus address should be set at the PZEM004T.
And if it can be set, will it be a persistent setting (thus still set after power cycle) ?

Thus I hoped someone may have experience with actually using multiple instances of this device on ESPEasy.
In theory it should be possible, but there are quite some "ifs".

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