The tables Analog and Digital of the Generic TCP modules show the telegram contents (actual values).

The following errors may occur:

• No data are displayed:

  • The telegram buffer on the sender side is not filled correctly.

  • The connectors of the send block are connected incorrectly.

• Incorrect values are displayed:

  • The telegram buffer on the controller side is not filled correctly (offset error).

  • The byte order is set incorrectly, see General module settings.

• The digital signals are sorted incorrectly:

  • The byte order is set incorrectly, see General module settings.

• The telegrams arrive not faster than ca. 200 ms with sequence error:

  • Problem with “Delayed Acknowledge”, see TCP performance problems caused by Delayed Acknowledge.

  • Problem caused by "Nagle's Algorithm", see TCP data corruption resulting from the Nagle’s Algorithm.