MODBUS TCP IP IN CONTROLLOGIX

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NPNPAVAN
Posts: 1
Joined: Sun Jul 21, 2019 1:04 pm

MODBUS TCP IP IN CONTROLLOGIX

Post by NPNPAVAN » Sun Jul 21, 2019 1:12 pm

Dear All,

Anybody can help on MODBUS TCP IP IN CONTROLLOGIX?

I have to read 30 Slaves data. And i am having 1756-L72 controller and 1756-EN2TR.

I have checked the sample code, which is downloaded from Rockwell Sample codes But with that I can read only 4 slaves Data only.

Sample Code: https://www.rockwellautomation.com/sear ... king=false

Thank You.

sandmanplc
Posts: 2
Joined: Tue Aug 27, 2019 4:29 pm

Re: MODBUS TCP IP IN CONTROLLOGIX

Post by sandmanplc » Tue Aug 27, 2019 5:26 pm

Hi

If you download the sample code, there are 2 manuals on the zip where you can read that the code only accept a maximum of 4 connections to unique IP address.

However, the manual also says that you can change this limitation modifyng the application (possibly on the tags).

Good luck!

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