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Advanced SCP Communication Settings


Overview

By adjusting the default SCP communication settings, SCP communication failures occurring from network timeouts can now be mitigated. In previous versions of Access It! Universal these communication settings had to be adjusted manually within the database.  It is recommended these values only be changed when experiencing frequent network related timeouts.

Implementation

Channels

  1. Within the Access It! Universal 4.x or 5.x, navigate to the Hardware Tree (Go | Main | Hardware)
  2. Select Channels
  3. Edit the Channel requiring a change in the communication settings.
  4. Select the Advanced tab
  5. Select the option Specify Settings
    • Response Timeout: The timeout in milliseconds the server will wait for a response from a TCP/IP SCP before a retry is initiated.
      The default value is 1,500 and the maximum value is 5,000.
    • TCP Retry Time (ms): The time in milliseconds the server will wait before trying to reopen a connection with a TCP/IP SCP. The server will close a connection when the max retry count is exceeded. The max retry count is set in the SCP properties screen.
      The default value is 15,000 and the maximum value is 60,000.
  6. Click Save

SCPs

  1. Within the Access It! Universal 4.x or 5.x, navigate to the Hardware Tree (Go | Main | Hardware)
  2. Select SCPS
  3. Edit the SCP requiring a change in the communication settings.
  4. Select the Advanced tab
  5. Select the option Specify Settings
    • Max Errors Before Offline: The max retry count before an SCP is flagged as being offline.
      Default is 3 and the maximum value is 5.
    • Poll Delay - Primary Comm (ms): Time in milliseconds that the server will wait between inactive polls while polling a TCP/IP SCP. An inactive poll is defined as a poll by the server in which the SCP has only an acknowledge (no data/information) to return.
      The default value is 1,500 and the maximum value is 5,000.
    • Poll Delay - Alternate Comm (ms): Time in milliseconds that the server will wait between inactive polls while polling a TCP/IP SCP using the alternate channel. An inactive poll is defined as a poll by the server in which the SCP has only an acknowledge (no data/information) to return.
      The default value is 1,500 and the maximum value is 5,000.
    • Offline Timeout: Time in milliseconds that the SCP will wait between polls before declaring itself offline from the server.
      Default is 15,000 and the maximum value is 65,000.
  6. Click Save

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  • 23-Mar-2016
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