Siemens enhanced driver with Tia portal V20 Firmware 4.0

Ignition
1

Hi,

Does someone got the Siemens driver working with a PLC on firmware V4 and Tia V20?
Before upgrading firmware from V3 to V4 and from Tia V18 to V20 was the communication working.

How i get in the log that a password i required

DEBUG

SymbolicAddressSpace

08Jan2026 10:07:36

Failed to load symbols

DEBUG

SymbolicAddressSpace

08Jan2026 10:07:36

Failed to load symbols. Error: 'AGL40_SYMBOLIC_PASSWORD_REQUIRED', '0xFFFA010C' SError: 'AGL40_SUCCESS','0x0'

DEBUG

SymbolFsm

08Jan2026 10:07:36

S(LOADING)               x E(LoadSymbolsFailure[cause=de.deltalogic.accon.aglink4.AglIOException: Method: 'symbolic_LoadAGLinkSymbolsFromPLC', Error Code: 'AGL40_SYMBOLIC_PASSWORD_REQUIRED', Error Nr: '0xFFFA010C', Error Message: 'AGL40_SYMBOLIC_PASSWORD_REQUIRED',]) = S'(LOADING_WAIT)        

DEBUG

SiemensS7Client

08Jan2026 10:07:36

This connection requires a password for symbolic access.

DEBUG

SiemensS7Client

08Jan2026 10:07:36

Error occurred while setting password for the PLC connection.

From what i see in Tia Portal configuration the password is the same as previously.
Here the setting in Ignition

image
image661×1162 37.4 KB

2

Which v4 firmware are you on? I know there were some earlier ones that were buggy for the upstream connections.

3

V4.0.0 and Ignition 8.3.2 (In docker)

4

Given the issues, I would suggest v4.0.4 and see if that helps. If anything, it might get you away from other bugs that have popped up in that firmware.

5

Well update to 4.0.4 didn’t help, i will need to check it on a fresh software if it works or not.

6

Are there any more details (like an exception) that accompanies this error message?

7

image
image1608×185 26.9 KB

Hi @Cody_Morgan not from what i can see.

I just did a test with a fresh PLC and start we a blank TIA project and that one was working. So i assume there is a configuration in our standard project that need to be done.

8

image
image2655×343 212 KB

You would normally need to expand this to see

9

image
image1151×280 41.5 KB

10

I've not seen this for anything other than a wrong password. Try editing the device connection e.g-

  • remove password
  • save
  • set password again
  • save
1 Like
11

Hi @Cody_Morgan,

I think i found the issue,
During the upgrade from V18 to V20 the access level management in Tia portal has been changed by Siemens.
By rerun the security wizard and select the following option.

image
image1407×703 64.7 KB

I can enter a password for the Full access level and this is the password needed for Ignition

image
image791×555 30.8 KB

I think the library IA is using doesn’t maybe support the new user management method.

Anyway this solved our issue.

Quick other question, is it logical that everytime a add and extra tag in the PLC i need to do a rebrowse in the gateway ? I though this was only needed if you want to see your tag in the device browser. But i create a tag and manually enter the opcPath and the tag stays in Error until i did the rebrowse.

Thanks for the help

2 Likes
12

I think the library IA is using doesn’t maybe support the new user management method.

You're right, good find.

Quick other question, is it logical that everytime a add and extra tag in the PLC i need to do a rebrowse in the gateway ? I though this was only needed if you want to see your tag in the device browser. But i create a tag and manually enter the opcPath and the tag stays in Error until i did the rebrowse.

Yes, unfortunately it is necessary to refresh the browse cache even if you know the OPC item path. The driver doesn't make a request to the PLC using the item path. The driver retrieves symbol information from the PLC and uses that information to look up the tag's ID using the item path. If that item path doesn't exist within that symbol information, the driver is unable to find the ID needed to make a request to the PLC. Refreshing the browse cache on the gateway is the only way to tell the driver to update the symbol information from the PLC.

PS:

I can enter a password for the Full access level and this is the password needed for Ignition

FYI, I think you can get by with a password that only allows read access, if you only need to read from the PLC.

1 Like