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YN_88363623-Newcomer
3-Newcomer
June 30, 2025
Question

Siemens TCP/IP can't read high address

  • June 30, 2025
  • 1 reply
  • 791 views

Hi,

 

I have issue reading reading higher address from the same DB for Siemens TCP/IP driver (S7-400).

I'm able to read e.g. DB15.INT3334 but not DB15.INT3396.

 

The error code is "Unable to read data from device. | Data block = 'DB15', block start = 3396, block size = 2, Reason = 'Device returned data access error'. Error code = 0X5".

 

I have tried the following but still doesn’t resolve it.

  1. PDU size of 240, 480, 960
  2. Increase request timeout from 5000ms to 10000ms
  3. Redownloaded DB15

I have another model 410-5H which can read such high address unlike 417-4.

Is there any settings in CPU properties which limit the read address memory?


Does anyone faces such issue?

1 reply

N
ntripathi15-Moonstone
15-Moonstone
June 30, 2025

Greetings @YN_8836362, 

 

I hope you're ding well.

 

Please take a look at the following article as it may help resolve your issue:

 

Article - CS281555 - Error Unable to read bytes[...] Device returned data access error [Code=0x05] using Siemens drivers in PTC Kepware Products

 

If you are prompted to log in to view the complete article, you can use your MyKepware login credentials.

Y
YN_88363623-NewcomerAuthor
3-Newcomer
July 1, 2025

Hi,

 

Thanks, but this solution does not apply to my case.

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