Posted 18 Sep 2023 Hi, We are receiving an error "*Error** PLC of all MODBUS/TCP connection modules Port No. is mismatched. When using multiple MODBUS/TCP connection modules, PLC of all MODBUS/TCP connection modules Port No. must be matched. MODBUS/TCP Connection Module NV_E02435" while trying to add two slave connections with different port numbers.....Please clarify on this error... Share this post Link to post Share on other sites
Posted 18 Sep 2023 Can you post some screen captures of your settings ? Share this post Link to post Share on other sites
Posted 18 Sep 2023 (edited) Please find the attachd image of error Edited 18 Sep 2023 by Ramkumar Share this post Link to post Share on other sites
Posted 19 Sep 2023 This is a connection fot he RJ71EN71 to be a modbus Slave. you only need one. But is you would like a second connection then the port nr should be different But You want to comm with two modbus slaves. You do this in the simple PLC comm settings in GX Works 3. You can find this in the params of the RJ71EN71. Here you can directly acces the Holding Reg etc and copy those to D or vice versa Share this post Link to post Share on other sites
