FX5U PLC to Ignition communnication

Ignition
1

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
mitst error931×1024 25.5 KB

image

2

Can you ping the PLC? First step is to always rule out any network / firewall / routing related issues.

3

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?

4

Have you configured the PLC to allow SLMP / connections? The manual talks about it a little here: Mitsubishi TCP Driver | Ignition User Manual

Mitsubishi PLCs require that you explicitly add a connection entry for each thing that will communicate with it via the SLMP/MELSEC protocol.

5

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
IMG_20260706_1002361920×726 623 KB

IMG_20260706_100137
IMG_20260706_1001371920×113 89.3 KB

IMG_20260706_100202
IMG_20260706_1002021840×3164 2.49 MB

IMG_20260706_100223
IMG_20260706_1002231920×276 250 KB

6

Dear all,

Any solution for this..

7

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
image1056×761 38.7 KB

8

My friend,

In my attachment, I have shared the connection. My first connection is SLMP over TCP, and the port is 2000.

9

Apologies, missed that. I see the series selection was changed to an iQR in that same batch of screenshots?

10

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
IMG_20260721_1257531920×128 91.2 KB

1784618815632529673951405870706
17846188156325296739514058707061844×4096 1.79 MB

11

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