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AVEVA Enterprise SCADA

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Dial connection delays

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  • Last UpdatedApr 24, 2025
  • 1 minute read

When configuring delays in the modem and connection records for a dial connection, the maximum time to connect must exceed the product of the modem and connection timeouts multiplied by the number of dial retrials.

The following must be true:

where:

  • Auto-answer Timeout is configured via the Physical Connection Edit tab in the Connection Row Edit dialog box.

  • Dial command Timeout is the Timeout value for a dial command configured via the Commands tab in the Modem Row Edit dialog box.

  • # of Dial-connection Retries is configured via the Physical Connection Edit tab in the Connection Row Edit dialog box.

  • Maximum time to Connect is configured via the Scan Edit tab in the Connection Row Edit dialog box.

If the maximum time to connect is less than the sum of the specified modem and connection timeouts multiplied by the number of dial retries, then the host could dial the remote continuously.

One way to manage dial connection delays is to set the Dial command Timeout to a very small value, and then enter the required delay in the Auto-answer Timeout field. Adding an extra second to the Maximum time to Connect value also ensures that enough time is allowed.