# Bad quality Data from Mitsubishi PLC **URL:** \ **Category:** Ignition\ **Tags:** ignition81\ **Created:** [May 23, 2024, 11:53am UTC](https://forum.inductiveautomation.com/t/bad-quality-data-from-mitsubishi-plc/90787 "2024-05-23T11:53:46Z")\ **Posts on this page:** 15\ **Page:** 1
**Author:** ![pratik\_suthar](https://avatars.discourse-cdn.com/v4/letter/p/5daacb/32.png) [@pratik\_suthar](https://forum.inductiveautomation.com/u/pratik_suthar)\ **Post date:** [May 23, 2024, 11:53am UTC](https://forum.inductiveautomation.com/t/bad-quality-data-from-mitsubishi-plc/90787/1 "2024-05-23T11:53:46Z")
Hi, I am trying to read the Data register from the Fx-5U CPU of Mitsubishi and after doing all the setting all i got is "bad" quality data. ![WhatsApp Image 2024-05-23 at 5.10.00 PM](https://us1.discourse-cdn.com/inductiveautomation/original/3X/8/0/80c38d476d822a5b315ec419de6e2d3eca91fb07.jpeg) ---
**Author:** ![Chris\_Nathan](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/chris_nathan/32/45712_2.png) [@Chris\_Nathan](https://forum.inductiveautomation.com/u/Chris_Nathan)\ **Post date:** [May 23, 2024, 2:07pm UTC](https://forum.inductiveautomation.com/t/bad-quality-data-from-mitsubishi-plc/90787/2 "2024-05-23T14:07:57Z")
Quick thing to try. What if you removed the ns/s syntax? Referencing this [video](https://inductiveuniversity.com/videos/mitsubishi-addressing/8.1) didn't include those OPC prefixes. That doesn't feel like its the problem, but an easy thing to check. ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/d/5/d56275e6ee6c5554ede74b9de80da722b45c9a4f.jpeg) Any other diagnostic information that you can provide? Can you read _any_ data registers? What about individual bits? ---
**Author:** ![Chris\_Nathan](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/chris_nathan/32/45712_2.png) [@Chris\_Nathan](https://forum.inductiveautomation.com/u/Chris_Nathan)\ **Post date:** [May 23, 2024, 2:11pm UTC](https://forum.inductiveautomation.com/t/bad-quality-data-from-mitsubishi-plc/90787/3 "2024-05-23T14:11:22Z")
Also welcome to the Ignition forum community 👏 ---
**Author:** ![pratik\_suthar](https://avatars.discourse-cdn.com/v4/letter/p/5daacb/32.png) [@pratik\_suthar](https://forum.inductiveautomation.com/u/pratik_suthar)\ **Post date:** [May 23, 2024, 3:46pm UTC](https://forum.inductiveautomation.com/t/bad-quality-data-from-mitsubishi-plc/90787/4 "2024-05-23T15:46:33Z")
Thank you Chris. I did try to follow the steps we have in the videos. that gets me connected to SIEMENS but not with MITSUBISHI. My connection with PLC is ok and it shows "connected". Thank you pratik ---
**Author:** ![Chris\_Nathan](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/chris_nathan/32/45712_2.png) [@Chris\_Nathan](https://forum.inductiveautomation.com/u/Chris_Nathan)\ **Post date:** [May 23, 2024, 3:59pm UTC](https://forum.inductiveautomation.com/t/bad-quality-data-from-mitsubishi-plc/90787/5 "2024-05-23T15:59:46Z")
So you cannot read any tags from the Mitsubishi PLC? Or is the problem specifically reading that data register? ---
**Author:** ![pratik\_suthar](https://avatars.discourse-cdn.com/v4/letter/p/5daacb/32.png) [@pratik\_suthar](https://forum.inductiveautomation.com/u/pratik_suthar)\ **Post date:** [May 23, 2024, 4:12pm UTC](https://forum.inductiveautomation.com/t/bad-quality-data-from-mitsubishi-plc/90787/6 "2024-05-23T16:12:27Z")
Yes i can not read data from PLC. I tried to read different data registers , no luck ---
**Author:** ![ktran](https://avatars.discourse-cdn.com/v4/letter/k/ecae2f/32.png) [@ktran](https://forum.inductiveautomation.com/u/ktran)\ **Post date:** [May 23, 2024, 4:26pm UTC](https://forum.inductiveautomation.com/t/bad-quality-data-from-mitsubishi-plc/90787/7 "2024-05-23T16:26:28Z")
Just making sure, but do you have the Series set to `iQF` in the device connection settings? If you set the `drivers.mitsubishi.Requests.BatchReadWordRequest` logger to TRACE in the gateway logs, are you seeing any errors? ---
**Author:** ![pratik\_suthar](https://avatars.discourse-cdn.com/v4/letter/p/5daacb/32.png) [@pratik\_suthar](https://forum.inductiveautomation.com/u/pratik_suthar)\ **Post date:** [May 24, 2024, 5:39am UTC](https://forum.inductiveautomation.com/t/bad-quality-data-from-mitsubishi-plc/90787/8 "2024-05-24T05:39:51Z")
Hi, ``` Please find out the configuration setting. ``` ![Misubishi](https://us1.discourse-cdn.com/inductiveautomation/original/3X/1/0/10aecb1c7f93029897ff735d56bf7c306fc8cf0b.png) ---
**Author:** ![pratik\_suthar](https://avatars.discourse-cdn.com/v4/letter/p/5daacb/32.png) [@pratik\_suthar](https://forum.inductiveautomation.com/u/pratik_suthar)\ **Post date:** [May 31, 2024, 8:42am UTC](https://forum.inductiveautomation.com/t/bad-quality-data-from-mitsubishi-plc/90787/9 "2024-05-31T08:42:30Z")
![WhatsApp Image 2024-05-31 at 2.07.42 PM](https://us1.discourse-cdn.com/inductiveautomation/original/3X/0/1/01ba24460da6d1d2023a816f7417e79c32c13884.jpeg) ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [May 31, 2024, 11:52am UTC](https://forum.inductiveautomation.com/t/bad-quality-data-from-mitsubishi-plc/90787/10 "2024-05-31T11:52:40Z")
Looks like the PLC is ignoring requests. You should make a Wireshark capture and see if anything other than the opening TCP handshake is getting through. If not, look at your network--firewalls, proxies, antivirus, whatever. ---
**Author:** ![pratik\_suthar](https://avatars.discourse-cdn.com/v4/letter/p/5daacb/32.png) [@pratik\_suthar](https://forum.inductiveautomation.com/u/pratik_suthar)\ **Post date:** [June 5, 2024, 7:41am UTC](https://forum.inductiveautomation.com/t/bad-quality-data-from-mitsubishi-plc/90787/11 "2024-06-05T07:41:22Z")
Hi, ``` I have connected ignition with Mitsubishi Fx5u Directly that means no switch or network would be in the picture. Still got the same results . Also i tried with bypassing the firewall and Antivirus. No result achieved . Please help ``` ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [June 5, 2024, 11:28am UTC](https://forum.inductiveautomation.com/t/bad-quality-data-from-mitsubishi-plc/90787/12 "2024-06-05T11:28:03Z")
You should contact support, so they can look over your shoulder to see what you've done wrong. ---
**Author:** ![Transistor](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/transistor/32/3380_2.png) [@Transistor](https://forum.inductiveautomation.com/u/Transistor)\ **Post date:** [June 5, 2024, 11:38am UTC](https://forum.inductiveautomation.com/t/bad-quality-data-from-mitsubishi-plc/90787/13 "2024-06-05T11:38:13Z")
pratick, you are writing the text of your posts as "code". That's why you have a horizontal scrollbar in your posts and the light grey background. Don't add leading spaces or tabs (which turns on code rendering) and it should solve the problem. ---
**Author:** ![Kaustubh\_Bomble](https://avatars.discourse-cdn.com/v4/letter/k/df788c/32.png) [@Kaustubh\_Bomble](https://forum.inductiveautomation.com/u/Kaustubh_Bomble)\ **Post date:** [April 1, 2025, 10:05am UTC](https://forum.inductiveautomation.com/t/bad-quality-data-from-mitsubishi-plc/90787/14 "2025-04-01T10:05:13Z")
Hi there i am new to Ignition and i am facing same problem as Mr. Pratick. did you find any resolution for your Problem ---
**Author:** ![Cody\_Morgan](https://avatars.discourse-cdn.com/v4/letter/c/db5fbb/32.png) [@Cody\_Morgan](https://forum.inductiveautomation.com/u/Cody_Morgan)\ **Post date:** [April 1, 2025, 8:33pm UTC](https://forum.inductiveautomation.com/t/bad-quality-data-from-mitsubishi-plc/90787/15 "2025-04-01T20:33:56Z")
Can you get a Wireshark?