AC500 Modbus TCP No of Socket

Hi,

In AC500 PLC it is mentioned in the document that there are 12 Sockets available for Modbus TCP/IP. When we set the Server Conections to 12 the System is allowing only 9 sockets for Modbus TCP.Remaining 3 sockets are reserved for system.

As pre the document the system should 12 sockets for Modbus TCP. We cannot increase the server connection more than 12 as it is not accepting in Automation Builder 1.1.0.

PLC Frimware Version (PM573-ETH): V2.4.4.

Is the information on the Help file is wrong or is there any other settings to do to use 12 sockets for Modubs TCP.

Regards

Vijayaram.J

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Vijayaram J Rank: 81

Asked 5 years ago

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Hello Vijayaram,

Can you please tell us your application requirement so we can find some solution.

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Pratik Agrawal Rank: 104

Answered 5 years ago

Hi,

I need to communicate with 12 Modbus TCP stations simultaneously.

Regards

Vijayaram.J

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by ramdas Rank: 694 on 9/30/2015 12:12:06 AM | Like (0) | Report

It is Possible.....Adjust your OMB times also accordingly...Why Simultaneously, Why can't you divided to 2,2 groups...?

by Vijayaram J Rank: 81 on 9/30/2015 12:58:14 AM | Like (0) | Report

i have to communicate with 245 stations in total

by ramdas Rank: 694 on 9/30/2015 2:07:08 AM | Like (0) | Report

Please do send your program backup to me....

by Vijayaram J Rank: 81 on 9/30/2015 5:24:11 AM | Like (0) | Report

please find below the link.
https://www.dropbox.com/s/vamuqjmy2x21hi2/DG.project?dl=0

by ramdas Rank: 694 on 9/30/2015 8:35:19 PM | Like (0) | Report

Dear Vijay..THe method you had fllowed in the Program is not good....This is like sometime it will work...Use traditional Method of calling Eth_Mod_Mast Block one after another...If you are calling one after another No need of 12 sockets also..I hope you are from Digitech.Am I correct?

by Vijayaram J Rank: 81 on 9/30/2015 9:17:09 PM | Like (0) | Report

Hi, I think you are missing a point here. I have total 245 stations. So calling blocks one after another will not work.
My question is about the information given in the manual.even I can manage with 9 sockets but my pooling time is getting increased.
I left digitech 2 years back.

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Vijayaram J Rank: 81

Answered 5 years ago

Dear VijayRam,

If you are using ETH_ICMP_PING blcok it will also cosnume socket,without any Port no. mentioned.

Also as per your attachement yu are consumed 5 out of 16,in that4 is system and 1 is Modus Server.

Please do give your program details also, sothat I think we can help you out if you are coming across any connectivity issue.

Also for better undestanding you can refer attched Manual.

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ramdas Rank: 694

Answered 5 years ago

AC500 Ethernet – Mo.pdf

Source: Team Room

Hello Vijayaram,

I dont have such details of sockets. May be it is reserved internally and do remember your codesys and if any touch panel which you have connected will reserve sockets.

But in our project we are making loop of ETH_MOD_MAST block when no of slaves are exceeding more than 8.

You can take done bit of ETH_MOD_MAST and enable of second block throug it.

This is the way generally we are doing it.

Hope it helps you.

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Pratik Agrawal Rank: 104

Answered 5 years ago

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AC500 Modbus TCP No of Socket

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