Topic: WS90 Modbus RTU model

[olicat]

Hi!

There now seems to be a ModbusRTU version of the WS90.
It might open up groups of buyers that were not accessible until now.
Nice!

Oliver

keywords: Modbus RTU RS485 weather station ultrasonic wind haptic piezoelectric rain temperature humidity light sensor, WN90LP

[Rocketman]

 

Looks good , what sort of $ would they be looking at

[MonsterDog6]

interesting, but I didn't find much information on Google, I'll follow that

[olicat]

Hi!

Finally the Modbus version of the WS90 is available.
You may order it via Shopify.
Firmware, Tools and manual are also available.

Oliver

[Rocketman]

Has all the problems been sorted with this WS90 Modbus model ? 

[olicat]

Hi!

I am not aware of any specific problems with the Modbus version.

The Modbus version will probably have inaccuracies in precipitation measurement in common with the standard WS90 due to the measuring method and lack of fine tuning.

However, I am not familiar with the WN90LP and have no information from any beta testers.
Do you know more?

It is noticeable, however, that the air pressure sensor is apparently integrated in the device. This probably distinguishes it from the conventional WS90 (or this has remained hidden from us until now).
Perhaps one should compare the circuit boards.

Oliver

[Gyvate]

However, I am not familiar with the WS90LP and have no information from any beta testers.
Do you know more?
....
It is noticeable, however, that the air pressure sensor is apparently integrated in the device. This probably distinguishes it from the conventional WS90 (or this has remained hidden from us until now).
Perhaps one should compare the circuit boards.

I only know that L stands for "Line" (cable) and P for "Pressure"
A 10 m telephone cable is available as accessory.

If its outlet can also be used for powering (does it have a functional heater ?) or if it has a 2nd cable/connector for this purpose etc. is unclear and there is no picture available that could give some idea. The WS90LP documentation is very scarce and only reduced to the signal transmission.

[Rocketman]

Hi!

I am not aware of any specific problems with the Modbus version.

The Modbus version will probably have inaccuracies in precipitation measurement in common with the standard WS90 due to the measuring method and lack of fine tuning.

However, I am not familiar with the WS90LP and have no information from any beta testers.
Do you know more?

It is noticeable, however, that the air pressure sensor is apparently integrated in the device. This probably distinguishes it from the conventional WS90 (or this has remained hidden from us until now).
Perhaps one should compare the circuit boards.

Oliver

Protocol shows a spare reserve slot at 9C99 H  ( wonder what else they not telling us - lightning detector maybe )

[Gyvate]

we have some news regarding the WS90LP
WS90LP can only be powered by the RS485 cable, the device is not working under battery or solar power.
The heater will work as usual even with 5v power applied.

[Arkadiusz_w]

Someone has an idea of what the wind meter's accuracy, tripping threshold and measurement range will be. Ecowitt is getting into the ground with other Asian companies like Rika and Hongyuv, which also offer weather stations and sonic anemometers on Modbus RS485.

https://hongyuv.en.alibaba.com/productgrouplist-810537824/Ultrasonic_Anemometer.html?spm=a2700.shop_oth.88.17

https://www.rikasensor.com/wind-sensor.html

[Cods]

Apologies for a newb question, however I’ve just purchased the standard WS90 (and GW2000, WH40, WH57). Those are unopened and returnable.
Is there any advantage in getting the Modbus version of the WS90 that I should be aware of? Future proofing? Later expansion or integration options? Disadvantages?
Again, sorry for a fairly ignorant question, but given the prices seem the same, will I be kicking myself later for not jumping on the Modbus / RS485 train?

[Gyvate]

unless you use already other devices with the RS485 Modbus protocol and the WS90 is just an "add-on" to an existing setup, you better go with the normal RF (radio frequency) version.
So far the WS90LP is not part of the general sensor landscape and also so far the only sensor which a RS485 interface.
The WS90LP target group is different from the average/usual user of a personal weather station.

[Cods]

Thanks for the swift response Gyvate, appreciated!
I ask only because my background is an operator using large scale networked systems, and I am very aware of the issues with falling into a can’t-talk-to-anyone-else trap.
As I’d currently categorise myself as sub-average user I shall give this model a good stiff ignoring and try and master the basics with the kit I have wrapped under the tree.

[Rocketman]

Don't forget the mounting brackets for WS90 and WH40

[Gyvate]

...
As I’d currently categorise myself as sub-average user I shall give this model a good stiff ignoring and try and master the basics with the kit I have wrapped under the tree.

paging (and reading  ) through our MUST READ thread https://www.wxforum.net/index.php?topic=40730.0 can give you further insights into the Ecowitt ecosystem (or universe) beyond manufacturer provided manuals. 

[Cods]

paging (and reading  ) through our MUST READ thread https://www.wxforum.net/index.php?topic=40730.0 can give you further insights into the Ecowitt ecosystem (or universe) beyond manufacturer provided manuals. 

Point well made mate, and I have started doing so, but in my initial read I didn't notice much explaining the (broader than Ecowitt) RS485 pros/cons/use cases - not that I insinuating that it should!
This forum has been a wealth of insight, happy to have found it and all of you.

[Gyvate]

Has all the problems been sorted with this WS90 Modbus model ? 

if you are talking about the rainfall accuracy, it seems to have improved with firmware 3.1.8.
The sensor has become more sensitive but seems to be able to be better fine-tuned with linear gain factors.
Some wind reading issues seem to have improved but could be more as our "high-accuracitionists under all conditions" are claiming.

@olicat:
the correct name of the array is WN90LP (as it has no solar panel ! - it's 5V powered via a data cable) - maybe you can adjust the first post 

[Gyvate]

paging (and reading  ) through our MUST READ thread https://www.wxforum.net/index.php?topic=40730.0 can give you further insights into the Ecowitt ecosystem (or universe) beyond manufacturer provided manuals. 

Point well made mate, and I have started doing so, but in my initial read I didn't notice much explaining the (broader than Ecowitt) RS485 pros/cons/use cases - not that I insinuating that it should!
This forum has been a wealth of insight, happy to have found it and all of you.

we mention the Modbus model only for completeness.
It's a different technical approach used by professional (not only) weather station manufacturers but significantly less elegant than the RF (radio frequency) approach. Possibly less prone to disturbances as a hardware connection is used (cable), but for owners of personal weather stations this is in most use cases irrelevant.