Advantech EKI-8500 Series, Руководство пользователя

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60 EKI-8500 Series User Manual
The following table describes the items in the TAS Configuration Parameters page.
4.3.5.3.2 Max SDU
This function allows you to inspect the current TAS configurations, and possibly
change them as well.
1. Navigate to Configuration > TSN > TAS and click Max SDU .
Item Description
Always Guard Band Click the drop-down menu to enable (default) or disable the Always
Guard Band option--defines how the values are calculated.
If a Gate Control List does not contain SetAndHold and/or
SetAndRelease operations the Always Guard Band option has no
effect.
If a Gate Control List does contain SetAndHold and SetAndRelease
operations then:
 When Always Guard Band is Enabled, a guard band is
implemented on all queues, both Express and Preemptible
queues.
 When Always Guard Band is Disabled, a guard band is only
implemented on Preemptible queues.
Port Displays the port number of the device.
Gate Enabled Click to enabled or disable (default) the parameter which determines
whether traffic scheduling is active (true) or inactive (false).
Gate States Click to enable (default) or disable the initial value of the port open
states that is used when no Gate Control List is active on the Port.
GCL Length Enter an string to indicate the Admin Gate Control List length
parameter for the Port (range: 0 to 256). The integer value indicates
the number of entries Gate Control Elements in the Gate Control List.
GCL Displays the link to the Gate Control List parameter configuration.
Cycle Time
Cycle Time Value
Enter the string to indicate the Admin Cycle Time (range: admin cycle
Time 1 to 999999999, cycle time 256 to 999999999 nanoseconds) as
defined by the number of units defined in the Unit field. The default
value is 100 milliseconds.
Cycle Time Unit Click the drop-down menu to select unit for the Admin Cycle Time
(values: milliseconds, microseconds or nanoseconds).
Cycle Time
Extension
Enter a string to indicate the integer in nanoseconds (range: 256 to
999999999) defining the maximum amount of time by which the
gating cycle for the Port is permitted to be extended when a new cycle
configuration is installed. The default value is 256 nanoseconds.
Base Time Enter a string to indicate the Admin value of base time, expressed as
an IEEE 1588 precision time protocol (PTP) timescale.
Config Change Click to enable or disable (default) the Configuration Change
parameter signals the start of a configuration change. After a
successful configuration change, the configured Admin values will
become the Oper values, which are displayed in the Monitor/TSN/TAS
web page. If the value of parameter Base Time is in the future, the
configuration change will be executed at Base Time.
Save Click Save to save changes.
Reset Click Reset to undo any changes made locally and revert to
previously saved values.