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AVEVA™ Communication Drivers

Troubleshoot the TWINCAT Communication Driver

  • Last UpdatedSep 04, 2025
  • 2 minute read

TWINCAT Communication Driver Error Codes

The following tables describe the additional error codes that you might receive when poll/poke requests and operations fail.

Code

Description

Possible Causes

Solution

1

Invalid AMS Net ID Station

Invalid AMS Net ID Station. The AMS Net ID must have 6 fields.

Type a valid AMS Net ID.

30

Error loading third party library

The third party library is not installed (tcAdsDll.dll or tcADsDllCE.dll).

Install the third party library TwinCAT ADS Interface PLC software.

40

Error loading extern function

The extern function cannot be loaded.

Install the correct tcAdsDll.dll or tcAdsDllCE.dll library. The library exists, but the extern functions cannot be loaded.

60

Invalid datatype

Specified address contains an invalid value.

Type a valid address.

70

Error in the GetLocalAddress function

The TwinCAT ADS Interface PLC is not working properly, or TwinCAT software is not running.

Contact your application technical support representative.

90

Error writing data

The TwinCAT ADS Interface PLC is not working properly, or TwinCAT software is not running.

Note the error text in the LogWin, and contact your application technical support representative.

100

Error in the ADSIGRP_SYM_READWRITE (InfoByNameEx) service

Cannot load the TwinCAT PLC variables information. The TwinCAT ADS Interface PLC is not working properly, TwinCAT software is not running, or the configured variable name is not configured in the TwinCAT PLC software.

Confirm that the variable name is configured the same as in the PLC program.

110

Error in the ADSIGRP_SYM_READWRITE service

Cannot read the TwinCAT PLC variables values. The TwinCAT ADS Interface PLC is not working properly, or TwinCAT software is not running.

Confirm that the variable name is configured the same as in the PLC program.

120

Error processing value

The configured variable name or address is not configured in the TwinCAT PLC software or is out of range.

Confirm that the variable name is configured the same as in the PLC program.

200

Too many connections

Ams Net ID is over the limit.

Only 64 Ams Net ID addresses can be configured.

211

Invalid Read Block Size

Not enough data buffer.

Configure upto 7 KB of data.

213

Invalid Header

The configured Header is not valid.

Check the documentation for a valid Header configuration.

215

216

Invalid Block Size ARRAY

Invalid Symbol

Not enough data buffer ARRAY.

Invalid NAME

Configure upto 7 KB of data.

Correct the invalid NAME

217

Invalid Connection

Invalid connection configuration.

Check the connection configuration

0

OK

Communicating without error.

None required.

-15

Time out waiting for message to start

  • Disconnected cables.

  • PLC is turned off, in stop mode, or in error mode.

  • Wrong station number.

  • Wrong parity (for serial communication).

  • Wrong RTS/CTS configuration (for serial communication).

  • Check cable wiring.

  • Check the PLC mode — it must be RUN.

  • Check the station number.

  • Increase the time out in the driver's advanced settings.

  • Check the RTS/CTS configuration (for serial communication).

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