Metering & Power Quality
Schneider Electric support forum about Power Meters (ION, PowerTag, PowerLogic) and Power Quality from design, implementation to troubleshooting and more.
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Hello,
Does anyone know how many PM8000 meters can connect by Ethernet daisy chain?
PME server - <Ethernet switch> - PM8000(1) - PM8000(2) - PM8000(3) - +++ - PM8000(?)
Is there any limitation about this?
We and our customers understand that the network will shut out when the PM8000 on the way goes down.
I hope hearing from someone soon.
kind regards,
Hideki Kougo
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Note that it is 100m between *switches* (or in this case devices). Unlike a repeater a switch handles each cable independently for collisions, etc since a switch is a store & forward mechanism for each physical layer frame from each input.
Still a really good idea to limit the amount of chaining to a smallish number because if *any* device in the chain loses power then all the downstream devices will no longer be connected to the network since the "switch" has been powered off. 🙂
Posted: 2018-09-17 01:13 PM
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You may find this article helpful. Basically states that since each meter has a unique IP and acts as a 2 port switch you can add as many meters as your network will allow. At some point it will no longer be practical to use a single connection for so many devices but that happens at a large number. Also keep in mind that you can only have a 100 meter cable run before you need a repeater or other network device.
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Note that it is 100m between *switches* (or in this case devices). Unlike a repeater a switch handles each cable independently for collisions, etc since a switch is a store & forward mechanism for each physical layer frame from each input.
Still a really good idea to limit the amount of chaining to a smallish number because if *any* device in the chain loses power then all the downstream devices will no longer be connected to the network since the "switch" has been powered off. 🙂
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