Originally created by: Stefano.Casarini

Hello,

in FileLOG of my Codesys OPC server (v. 2.3.13.0) there are these lines:

* ERROR: Writing values failed to <plc_single>, Error=7
</plc_single> ERROR: COMM_FATALERROR[0] from <plc_single>
</plc_single>*** ERROR: COMM_FATALERROR[0] from <plc_single></plc_single>

What does it means?
What shall I do about this error?

Regards

Stefano Casarini

Hi,

I have a similar problem, my program runs smoothly but when I connect to the server I get these errors:

(28.10.2011, 14:00:05.033) Server 2.3.13.7 started
(28.10.2011, 14:00:05.033) UpdateRate[ms]=150, PublicGroups=0, SyncInit=0, LogEvents=1
(28.10.2011, 14:00:05.033) 1. Reconnect to <plc_single>
(28.10.2011, 14:00:05.034) [PLC_SINGLE]: ::ConnectGateway(): m_ulGatewayChannels=1
(28.10.2011, 14:00:05.248) <plc_single> Reconnect successful, ProjectName='Minalyze_PLC_Program_vX'
(28.10.2011, 14:00:05.248) Timeout[ms]=6000, BufferSize[B]=0, Waitime[s]=30, Reconnecttime[s]=30
(28.10.2011, 14:00:05.248) Motorola=0, NoLogin=1
(28.10.2011, 14:00:05.268) <plc_single> ProjectID matched: PLC=428198, SYM=428198
(28.10.2011, 14:00:05.274) <plc_single> 1046 symbols loaded
(28.10.2011, 14:00:05.346) Client attached to server
(28.10.2011, 14:00:05.560) * ERROR: COMM_FATALERROR[1] from <plc_single>
(28.10.2011, 14:00:11.560) </plc_single> ERROR: Sync reading values failed from <plc_single>, Timeout expired
(28.10.2011, 14:00:11.561) * ERROR: HandleReply: </plc_single> PLC(0)=PLC_SINGLE is in unnormal state State=OCS_IDLE (OCS_IDLE)! *
(28.10.2011, 14:00:11.561) ERROR: COMM_FATALERROR[1] from <plc_single>
(28.10.2011, 14:00:11.602) [PLC_SINGLE]: ::DisconnectGateway(m_ulGateway=0): m_ulGatewayChannels=0
(28.10.2011, 14:00:11.602) 1. Reconnect to <plc_single>
(28.10.2011, 14:00:11.602) [PLC_SINGLE]: ::ConnectGateway(): m_ulGatewayChannels=1
(28.10.2011, 14:00:11.804) <plc_single> Reconnect successful, ProjectName='Minalyze_PLC_Program_vX'
(28.10.2011, 14:00:11.804) Timeout[ms]=6000, BufferSize[B]=0, Waitime[s]=30, Reconnecttime[s]=30
(28.10.2011, 14:00:11.804) Motorola=0, NoLogin=1
(28.10.2011, 14:00:11.820) <plc_single> ProjectID matched: PLC=428198, SYM=428198
(28.10.2011, 14:00:11.821) Reorganize finished, with changed item pool
(28.10.2011, 14:00:11.821) <plc_single> 1046 symbols loaded
(28.10.2011, 14:00:12.412) * ERROR: COMM_FATALERROR[1] from <plc_single>
(28.10.2011, 14:00:12.718) </plc_single></plc_single></plc_single></plc_single></plc_single></plc_single> ERROR: COMM_FATALERROR[0] from <plc_single>
(28.10.2011, 14:00:13.264) [PLC_SINGLE]: ::DisconnectGateway(m_ulGateway=0): m_ulGatewayChannels=0
(28.10.2011, 14:00:13.264) 1. Reconnect to <plc_single>
(28.10.2011, 14:00:13.264) [PLC_SINGLE]: ::ConnectGateway(): m_ulGatewayChannels=1
(28.10.2011, 14:00:13.471) <plc_single> Reconnect successful, ProjectName='Minalyze_PLC_Program_vX'
(28.10.2011, 14:00:13.471) Timeout[ms]=6000, BufferSize[B]=0, Waitime[s]=30, Reconnecttime[s]=30
(28.10.2011, 14:00:13.471) Motorola=0, NoLogin=1
(28.10.2011, 14:00:13.864) * ERROR: COMM_FATALERROR[1] from <plc_single>
(28.10.2011, 14:00:14.071) </plc_single> ERROR: COMM_FATALERROR[1] from <plc_single>
(28.10.2011, 14:00:18.407) * ERROR: Loading symbols failed from <plc_single>, GatewayError=0
(28.10.2011, 14:00:20.408) </plc_single></plc_single> ERROR: Loading symbols failed from <plc_single>, GatewayError=0
(28.10.2011, 14:00:20.948) [PLC_SINGLE]: ::DisconnectGateway(m_ulGateway=0): m_ulGatewayChannels=0</plc_single></plc_single></plc_single></plc_single></plc_single></plc_single></plc_single></plc_single>

I works fine for a while, and it was working before, is the away to make it more stable??? I am using a client in lab view.

Regards.
Efrain

Some questions:
- Which PLC are you using?
- Does this also happen when you use another OPC client (e.g. Matrikon OPC explorer)?
- Does this also happen with another PLC application with less variables in the symbol list?

TimvH hat geschrieben:
Some questions:
- Which PLC are you using?
- Does this also happen when you use another OPC client (e.g. Matrikon OPC explorer)?
- Does this also happen with another PLC application with less variables in the symbol list?

I am using a Festo CPX-CEC.

I am using the same client in two different computers, it always work in the laptop computer, however in the desktop computer works ONLY after a fresh installation of Codesys, so if I restart the computer the same fatal error occurs.

In general, when it is working it works really good, but once I have restarted my computer, I have to uninstall and reinstall Codesys. I hope you can help me to solve this issue since it is very annoying.

I would think that something gets corrupted in a the registers or a file, but how to know what i causing the problem.

Desktop:
Win7 32bits.
Labview Client based on OPC DataControl ActiveX
Codesys 2.3.9.31

Laptop:
win7 62bits.
Labview Client
Codesys 2.3.9.31 OPC DataControl ActiveX

Regards,

Efrain

This sounds strange and probably a Windows related issue. Suggestions:
- Turn of User Account Control: http://windows.microsoft.com/en-US/wind ... nt-control
- Run the OPC server as Administrator (right click on CoDeSysOPC.exe and go the tab "compatibility".
- Run the OPC server in Windows XP SP2 mode (same tab as above)

Please let us know if (and which one) solved it for you.