Welcome to the new Schneider Electric Community

It's your place to connect with experts and peers, get continuous support, and share knowledge.

  • Explore the new navigation for even easier access to your community.
  • Bookmark and use our new, easy-to-remember address (community.se.com).
  • Get ready for more content and an improved experience.

Contact SchneiderCommunity.Support@se.com if you have any questions.

Close
Invite a Co-worker
Send a co-worker an invite to the Exchange portal.Just enter their email address and we’ll connect them to register. After joining, they will belong to the same company.
Send Invite Cancel
84601members
353872posts

Quantum 140 NOE771 00/01 Communications with Dual Port Client Device

Modicon PAC Forum

A forum for topics related to the scope of Modicon PAC offers and ecosystem along the whole lifecycle: Modicon M580 and 340, EcoStruxure Control Expert, EcoStruxure Process Expert (Unity Pro) and more.

AP7311
Crewman
Crewman
0 Likes
2
343

Quantum 140 NOE771 00/01 Communications with Dual Port Client Device

Hi,

 

First of all, thanks in advance for those who support and advises.

 

I have a Modbus/TCP operational network as shown below.

 

NWA.JPG

 

However, at any 1 time only 1 LAN is able to communicate instead of both LAN networks of the device. In another system with S.E Premium Unity PLC, both LAN networks are able to communicate at the same time.

 

Thus, I would like to enquire if this is a limitation of Quantum NOE 771 whereby only 1 LAN can communicate at any one time or whether I have missed out any parameter/configuration settings? Any issue on the IP address configurations?

 

Please advise.

 

Thank you very much for the advise and assistance.

Tags (1)
2 Replies 2
Robert_Willis
Ensign Ensign
Ensign
0 Likes
1
326

Re: Quantum 140 NOE771 00/01 Communications with Dual Port Client Device

Based on your configuration I suspect it has to do with the Client. What is the client and how is it configured to handle the redundant LAN connection to the Modicon Quantum Hot-Standby System. Based on your comments, it appears that it will only communicate on the the "Primary" connection until a failure occurs.. To test this theory establish communication from the Client to the Modicon Quantum 140NOE771 module, disconnect the Ethernet Cable and confirm that communication is now established to the alternate 140NOE711 module.

Tags (1)
AP7311
Crewman
Crewman
0 Likes
0
322

Re: Quantum 140 NOE771 00/01 Communications with Dual Port Client Device

Hi Robert,

 

First of all, thanks for the response, sincerely appreciated.

 

What you have mentioned has been proven correct in this case.

 

However, we can't conclude that the issue is due to the client device as the same device is used with Premium Unity PLC NOE to be able to communicate with both LAN network at the same time.

 

There are 2 possibility which I suspect:

1. Due to common IP domain with aaa.aaa.aa  same addressing, not sure how much this will affect the communications;

2. Communications is through read/write logic (polling) instead of using the IO scanning functions

 

Are there any more conclusive causes?

 

What do you think? 

 

Thanks!

Tags (1)