# FX5U PLC to Ignition communnication **URL:** \ **Category:** Ignition\ **Created:** [July 3, 2026, 11:24am UTC](https://forum.inductiveautomation.com/t/fx5u-plc-to-ignition-communnication/116261 "2026-07-03T11:24:20Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![Rajashekar\_Reddy](https://avatars.discourse-cdn.com/v4/letter/r/c0e974/32.png) [@Rajashekar\_Reddy](https://forum.inductiveautomation.com/u/Rajashekar_Reddy)\ **Post date:** [July 3, 2026, 11:24am UTC](https://forum.inductiveautomation.com/t/fx5u-plc-to-ignition-communnication/116261/1 "2026-07-03T11:24:20Z")
Dear Team, I am currently working on connecting a Mitsubishi FX5U PLC with Ignition. Following the Ignition documentation for the Mitsubishi TCP Driver, I selected the iQ-F series for the FX5U model. The PLC IP address is 192.168.0.2. I have attempted to communicate using the default port numbers 1025 and 1030, but I have not been successful in establishing a connection. Please find the attached photos for more details on my configuration. Could you please provide guidance on how to resolve this communication issue? ![mitst error](https://us1.discourse-cdn.com/inductiveautomation/original/3X/d/8/d8ef9164edeb3aed4deca0d45e852ea6f758e4ae.png) ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/2/7/27576ed9e841455adef2c8ca4336b487fd89948d.png) ---
**Author:** ![Nol](https://avatars.discourse-cdn.com/v4/letter/n/8e8cbc/32.png) [@Nol](https://forum.inductiveautomation.com/u/Nol)\ **Post date:** [July 3, 2026, 8:37pm UTC](https://forum.inductiveautomation.com/t/fx5u-plc-to-ignition-communnication/116261/2 "2026-07-03T20:37:30Z")
Can you ping the PLC? First step is to always rule out any network / firewall / routing related issues. ---
**Author:** ![Rajashekar\_Reddy](https://avatars.discourse-cdn.com/v4/letter/r/c0e974/32.png) [@Rajashekar\_Reddy](https://forum.inductiveautomation.com/u/Rajashekar_Reddy)\ **Post date:** [July 4, 2026, 4:30am UTC](https://forum.inductiveautomation.com/t/fx5u-plc-to-ignition-communnication/116261/3 "2026-07-04T04:30:41Z")
Hi @Nol Thanks for your reply. I did it for pinging and it's pinging. For your information, I am not able to communicate through the Mitsubishi TCP Driver only. I established communication between the PLC and Ignition via Modbus TCP. The Modbus TCP is working, so why is the Mitsubishi TCP not working? ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [July 4, 2026, 11:59am UTC](https://forum.inductiveautomation.com/t/fx5u-plc-to-ignition-communnication/116261/4 "2026-07-04T11:59:41Z")
Have you configured the PLC to allow SLMP / connections? The manual talks about it a little here: [Mitsubishi TCP Driver | Ignition User Manual](https://www.docs.inductiveautomation.com/docs/8.3/ignition-modules/opc-ua/opc-ua-drivers/mitsubishi-tcp-driver#gx-works-configuration) Mitsubishi PLCs require that you explicitly add a connection entry for each thing that will communicate with it via the SLMP/MELSEC protocol. ---
**Author:** ![Rajashekar\_Reddy](https://avatars.discourse-cdn.com/v4/letter/r/c0e974/32.png) [@Rajashekar\_Reddy](https://forum.inductiveautomation.com/u/Rajashekar_Reddy)\ **Post date:** [July 6, 2026, 4:41am UTC](https://forum.inductiveautomation.com/t/fx5u-plc-to-ignition-communnication/116261/5 "2026-07-06T04:41:00Z")
Dear @Kevin.Herron Thank you for your reply. I have reviewed and followed the Ignition document. However, I have one question: I was unable to find the setting "Set Enable/Disable Online Change to Enable All (SLMP)." Please find the attached images for your reference. FYI PLC IP : 10.182.1.185 ![IMG_20260706_100236](https://us1.discourse-cdn.com/inductiveautomation/original/3X/8/d/8dbd4d940acced8459a5af0830960abbd3455626.jpeg) ![IMG_20260706_100137](https://us1.discourse-cdn.com/inductiveautomation/original/3X/e/5/e5c841ee540084d5d985011b44b7320cd133f42c.jpeg) ![IMG_20260706_100202](https://us1.discourse-cdn.com/inductiveautomation/original/3X/0/b/0bc1ac12b524339e1db3b751b9acbde22e096130.jpeg) ![IMG_20260706_100223](https://us1.discourse-cdn.com/inductiveautomation/original/3X/1/5/15ea0cbae08b9070fc7e5512093cedbe42c4208c.jpeg) ---
**Author:** ![Rajashekar\_Reddy](https://avatars.discourse-cdn.com/v4/letter/r/c0e974/32.png) [@Rajashekar\_Reddy](https://forum.inductiveautomation.com/u/Rajashekar_Reddy)\ **Post date:** [July 20, 2026, 5:37pm UTC](https://forum.inductiveautomation.com/t/fx5u-plc-to-ignition-communnication/116261/6 "2026-07-20T17:37:31Z")
Dear all, Any solution for this.. ---
**Author:** ![william.bowen](https://avatars.discourse-cdn.com/v4/letter/w/8c91f0/32.png) [@william.bowen](https://forum.inductiveautomation.com/u/william.bowen)\ **Post date:** [July 21, 2026, 3:51am UTC](https://forum.inductiveautomation.com/t/fx5u-plc-to-ignition-communnication/116261/7 "2026-07-21T03:51:18Z")
Have you opened a SLMP Connection Module in the Ethernet Configuration? That is where you specify which port Ignition will connect with. See here, number 4 which has opened port 2000 for SLMP communication: ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/a/e/ae96c4707dcbed128b9547310bdc38ea992c6521.png) ---
**Author:** ![Rajashekar\_Reddy](https://avatars.discourse-cdn.com/v4/letter/r/c0e974/32.png) [@Rajashekar\_Reddy](https://forum.inductiveautomation.com/u/Rajashekar_Reddy)\ **Post date:** [July 21, 2026, 5:06am UTC](https://forum.inductiveautomation.com/t/fx5u-plc-to-ignition-communnication/116261/8 "2026-07-21T05:06:24Z")
My friend, In my attachment, I have shared the connection. My first connection is SLMP over TCP, and the port is 2000. ---
**Author:** ![william.bowen](https://avatars.discourse-cdn.com/v4/letter/w/8c91f0/32.png) [@william.bowen](https://forum.inductiveautomation.com/u/william.bowen)\ **Post date:** [July 21, 2026, 5:15am UTC](https://forum.inductiveautomation.com/t/fx5u-plc-to-ignition-communnication/116261/9 "2026-07-21T05:15:03Z")
Apologies, missed that. I see the series selection was changed to an iQR in that same batch of screenshots? ---
**Author:** ![Rajashekar\_Reddy](https://avatars.discourse-cdn.com/v4/letter/r/c0e974/32.png) [@Rajashekar\_Reddy](https://forum.inductiveautomation.com/u/Rajashekar_Reddy)\ **Post date:** [July 21, 2026, 7:29am UTC](https://forum.inductiveautomation.com/t/fx5u-plc-to-ignition-communnication/116261/10 "2026-07-21T07:29:04Z")
Hi, No need to apologize, and thanks for your reply. I tried with both "IQF" and "iQR" but still encountered the same issue. I forgot to take the updated image during the uploading time. You can see the updated images here, FYI: Ignition version is 8.1.48 Mitsubishi Driver : 1.1.48 ![IMG_20260721_125753](https://us1.discourse-cdn.com/inductiveautomation/original/3X/5/4/5479dda32c4c2f2f12837baa5f13d8fd94da8823.jpeg) ![1784618815632529673951405870706](https://us1.discourse-cdn.com/inductiveautomation/original/3X/e/e/ee4602417ef17df948c00f0221bb90d2b94a6756.jpeg) ---
**Author:** ![william.bowen](https://avatars.discourse-cdn.com/v4/letter/w/8c91f0/32.png) [@william.bowen](https://forum.inductiveautomation.com/u/william.bowen)\ **Post date:** [July 22, 2026, 4:01am UTC](https://forum.inductiveautomation.com/t/fx5u-plc-to-ignition-communnication/116261/11 "2026-07-22T04:01:50Z")
Everything you've shown so far looks correct. Potentially a network issue? Could you trying to run Test-NetConnection in PowerShell from the Ignition gateway like `tnc 10.182.1.185 -port 2000`