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[SwitchDin] Re: Firewall setting for Viva
I believe the Second connection is the normal and you want to change it to the first connection on the picture.
Theoretically ,that's okay .Because we see the logger through Modbus TCP 502 port, as long as it is in the same network as switchidn we should be able to see it.
How It Works
- Connection Architecture: Droplet → Logger (TCP) → Inverters (RS485)
- Communication:
- Droplet to Logger: Modbus TCP (Port 502)
- Logger to Inverters: RS485 (Modbus RTU)
Inverters appear on regular slave IDs: 1, 2, 3, etc.
Logger's own memory map appears on slave ID 247.
Discovery Process:
The droplet discovers the inverters behind the logger, not the logger itself
The logger is transparent - it just forwards Modbus commands- Used for setups like:
Droplet → Sungrow Logger → 4x Sungrow PV 3-phase inverters - Critical Control Configuration
IMPORTANT: The logger has its own control capability that MUST BE DISABLED to avoid conflicts:
Azam Salih
Customer Care Engineer
SwitchDin
Hotline: +61 2 4786 0426 I Email: support@switchdin.com
Level 1, Suite 101, 426 King Street, Newcastle West, NSW 2302 Australia
Thank you Azam. Noted on this.
I have copied in everyone from the other thread.
Also copying Kieren's query below for you to review and reply below:
From: Kieren Timmer <Kieren@coastaled.com.au>
Sent: Wednesday, 9 September 2026 4:15 PM
To: SwitchDin <support@switchdin.com>
Cc: Gautam Padman <gautam@smartcommercialsolar.com.au>
Subject: Re: [SwitchDin]Hey Azam we have another job I was hoping you would be able to help me with.It is for VIVA and there has been some issues with them allowing ports to be open etc for Horizon Power.This particular job has droplet ID 0001C03AD3C9 but there is another 5 which will have the same issues.
There is 2 x sun grow inverters connected to a data logger via RS485. The data logger is connected to the droplet via ethernet and so we can see both inverters and data logger in the storm cloud app but the isolarcloud / sun grow app shows the system as offline.
If we were to reconfigure and have the data logger connected to the same network switch as the droplet so that the data logger can be viewed in the isolarcloud app, are you able to add the 2 inverters and see them via the network connection instead of them being physically connected to the droplet?
Ive attached a quick SLD below to show how it is connected and how I mean to change it.
Please let us know on the above.
GAUTAM PADMAN
Project Manager
gautam@smartcommercialenergy.com.au
https://www.smartcommercialenergy.com.au/
Connect with me on LinkedIn
Review us on Google
T:+0466 007 518
A: 6.01/2 Elizabeth Plaza, North Sydney, NSW 2060
From: Azam Salih (SwitchDin) <support@switchdin.com>
Sent: Wednesday, 23 September 2026 12:59 PM
To: Gautam Padman <gautam@smartcommercialenergy.com.au>
Cc: Kieren Timmer <kieren@coastaled.com.au>
Subject: Firewall setting for Viva[9D5R1P-D3R7L]Hi,
Help is on the way..
This ticket was created on your behalf.
To add additional comments, reply to this email.
Hi Gautam and Kieren,
Please post any questions here in this email, as the other HP ticket is becoming too confusing with many things overlapping.
Appreciate your cooperation.
Azam Salih
Customer Care Engineer
SwitchDin
Hotline: +61 2 4786 0426 I Email: support@switchdin.com
Level 1, Suite 101, 426 King Street, Newcastle West, NSW 2302 Australia
This email is a service from SwitchDin.
[9D5R1P-D3R7L]
This email and any attachments are proprietary and confidential and are intended solely for the use of the individual to whom it is addressed. Any views or opinions expressed are solely those of the author and do not necessarily reflect or represent those of SwitchDin Pty Ltd. If you have received this email in error, please let us know immediately by reply email and delete it from your system. You may not use, disseminate, distribute or copy this message nor disclose its contents to anyone.SwitchDin Pty Ltd (ABN 29 154893857) PO Box 1165, Newcastle NSW 2300 Australia
by Indra bat Ochir - 05:01 - 25 Sept 2026
Reference
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Re: Firewall setting for Viva
Thank you Azam. Noted on this.
I have copied in everyone from the other thread.
Also copying Kieren's query below for you to review and reply below:
From: Kieren Timmer <Kieren@coastaled.com.au>
Sent: Wednesday, 9 September 2026 4:15 PM
To: SwitchDin <support@switchdin.com>
Cc: Gautam Padman <gautam@smartcommercialsolar.com.au>
Subject: Re: [SwitchDin]Hey Azam we have another job I was hoping you would be able to help me with.It is for VIVA and there has been some issues with them allowing ports to be open etc for Horizon Power.This particular job has droplet ID 0001C03AD3C9 but there is another 5 which will have the same issues.
There is 2 x sun grow inverters connected to a data logger via RS485. The data logger is connected to the droplet via ethernet and so we can see both inverters and data logger in the storm cloud app but the isolarcloud / sun grow app shows the system as offline.
If we were to reconfigure and have the data logger connected to the same network switch as the droplet so that the data logger can be viewed in the isolarcloud app, are you able to add the 2 inverters and see them via the network connection instead of them being physically connected to the droplet?
Ive attached a quick SLD below to show how it is connected and how I mean to change it.
Please let us know on the above.
GAUTAM PADMAN
Project Manager
gautam@smartcommercialenergy.com.au
https://www.smartcommercialenergy.com.au/
Connect with me on LinkedIn
Review us on Google
T:+0466 007 518
A: 6.01/2 Elizabeth Plaza, North Sydney, NSW 2060
From: Azam Salih (SwitchDin) <support@switchdin.com>
Sent: Wednesday, 23 September 2026 12:59 PM
To: Gautam Padman <gautam@smartcommercialenergy.com.au>
Cc: Kieren Timmer <kieren@coastaled.com.au>
Subject: Firewall setting for VivaHi,
Help is on the way..
This ticket was created on your behalf.
To add additional comments, reply to this email.
Hi Gautam and Kieren,
Please post any questions here in this email, as the other HP ticket is becoming too confusing with many things overlapping.
Appreciate your cooperation.
Azam Salih
Customer Care Engineer
SwitchDin
Hotline: +61 2 4786 0426 I Email: support@switchdin.com
Level 1, Suite 101, 426 King Street, Newcastle West, NSW 2302 Australia
This email is a service from SwitchDin.
[9D5R1P-D3R7L]
by Gautam Padman - 10:35 - 24 Sept 2026
