S7 SEVERE - S7Connection, generateReadRequestSym, Invalid access descriptor for address

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a.decelis
Posts:30
Joined: Thu Jun 25, 2015 6:42 pm

S7 SEVERE - S7Connection, generateReadRequestSym, Invalid access descriptor for address

Post by a.decelis »

Hi,

What does this error "S7 SEVERE - S7Connection, generateReadRequestSym, Invalid access descriptor for address" means?

This is WinCC OA 3.14 Patch 12 for Windows.

Did not find any matches, neither at the Knowledge Base nor in the help.

We are getting random-looking SEVERE errors in the log: same S7 Manager, different PLCs, many severe errors.

Every 10 seconds or so, we get a TimeOut with the S7400h, followed by a handful of "S7 SEVERE - S7Connection, generateReadRequestSym, Invalid access descriptor for address XXXX" errors.

Additional info:
In this project, there is a single (*) S7 Manager handling connections to several S7 PLCs (1xS7400h + 2xS71200 + several others).
Some PLCs are accessed in S7 - TIA Symbolic mode, whilst others, in S7 - IE (TCP) mode.
Lots of variables and addresses are being polled from these PLCs.
(*) The project is using WinCC OA Reundancy so, two managers actually, one per server.

Example of messages we're getting (addresses and PLC names have been removed because of privacy concerns).

Code: Select all


WCCOAs7      (1), 2019.01.21 10:19:32.211, SYS,  SEVERE,     24/s7, Timeout during IP read for

WCCOAs7      (1), 2019.01.21 10:19:32.211, SYS,  SEVERE,     24/s7, Timeout during IP read for

WCCOAs7      (1), 2019.01.21 10:19:32.211, SYS,  SEVERE,     24/s7, Timeout during IP read for

WCCOAs7      (1), 2019.01.21 10:19:32.211, SYS,  SEVERE,     24/s7, Timeout during IP read for

WCCOAs7      (1), 2019.01.21 10:19:32.900, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address 

WCCOAs7      (1), 2019.01.21 10:19:32.900, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address 

WCCOAs7      (1), 2019.01.21 10:19:32.900, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address 

WCCOAs7      (1), 2019.01.21 10:19:32.900, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address 

WCCOAs7      (1), 2019.01.21 10:19:32.900, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address 

WCCOAs7      (1), 2019.01.21 10:19:32.900, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address 

WCCOAs7      (1), 2019.01.21 10:19:32.900, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address 

WCCOAs7      (1), 2019.01.21 10:19:32.900, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address 

WCCOAs7      (1), 2019.01.21 10:19:32.900, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:32.900, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:32.900, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:32.900, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:32.900, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:32.900, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:32.900, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:32.900, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:32.900, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:32.900, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:32.900, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:32.900, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:32.900, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:32.900, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:32.900, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:32.900, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:32.900, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:32.905, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:32.905, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:32.905, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:33.889, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:33.889, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:33.889, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:33.889, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:33.889, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:33.889, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:33.889, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:33.889, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:33.889, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:33.889, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:33.889, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:33.889, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:33.889, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:33.889, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:33.889, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:33.889, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:33.889, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:33.889, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:33.889, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:33.889, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:33.889, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address

WCCOAs7      (1), 2019.01.21 10:19:33.889, PARAM,SEVERE,     54, Unexpected state, S7Connection, generateReadRequestSym, Invalid access descriptor for address
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