Siemens TCP/IP can't read high address

[YN_8836362]

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?

[ntripathi]

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.

[YN_8836362]

Hi,

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