The FIFO DAT maintains a user-set maximum number of rows in a table. You add rows using the
appendRow() method found in DAT Class. When its capacity is reached, the first row is removed. After the maximum number of rows is reached, the oldest row is discarded when a new row is added.
/callbacks - The Callbacks DAT will execute once for each row added to the FIFO DAT.
executeloc - Determines the location the script is run from.
- Current Node
current- The script is executed from the current node location (for example, where 'cc' points to).
- Callbacks DAT
callbacks- The script is executed from the location of the DAT specified in the Callbacks DAT parameter.
- Specified Operator
op- The script is executed from the operator specified in the From Operator parameter below.
fromop - The operator whose state change will trigger the DAT to execute its script when Execute is set to Specified Operator. This operator is also the path that the script will be executed from if the Execute From parameter is set to Specified Operator.
clamp - The DAT is limited to 100 messages by default but with Clamp Output, this can be set to anything including unlimited.
maxlines - Limits the number of messages, older messages are removed from the list first.
clear - Deletes all lines except the heading. To clear with a python script
Keep First Row
firstrow - Keeps first row in table.
Using Tscript Mode
Arguments are passed to the script to describe what type of change was detected. In Tscript you can view the arguments by including the command
echo $args in the script.