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It is recommended that you use a Cron trigger, rather than a Time trigger, if you want to schedule non-standard time intervals for a triggering a task (see 63571356 Scheduling a Time Interval, below).
Cron Syntax
The Cron trigger uses standard Cron syntax. Once the Cron trigger is entered into the system, the Controller interprets it and processes it as it would any other trigger. The trigger is satisfied when the current date and time match all the values specified in the Minutes, Hours, Day of Month, Month, and Day of Week fields.
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Field Name | Required | Allowed Values | Allowed Special Characters |
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Minutes | Yes | 0-59 | * / , - |
Hours | Yes | 0-23 | * / , - |
Day of Month | Yes | 1-31 | * / , - |
Month | Yes | 1-12 or JAN-DEC | * / , - |
Day of Week | Yes | 0-7 or SUN (0 or 7)-SAT | * / , - |
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The day when a Cron trigger launches can be specified by two fields: 63571356 and 63571356 Day of Month and Day of Week. If both fields are restricted (that is, they both are not *), the trigger launches based on the 63571356 Day Logic field value. If 63571356 Day Logic is set to Or, when either Day field matches, the trigger can launch. For example: 30 4 1,20 * 5 would cause the trigger to launch at 4:30 a.m. on the 1st and 20th of each month, as well as on every Friday. If, however, 63571356 Day Logic is set to And, the trigger would launch at 4:30 a.m. only on days that are the 1st or 20th which are also a Friday. |
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Step 1 | From the Automation Center navigation pane, select Triggers > Cron Triggers. The Cron Triggers list displays. |
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Step 2 | Enter/select Details for a new Cron trigger, using the field descriptions below as a guide.
To display more of the Details fields on the screen, you can either:
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Step 3 | Click a |
Step 4 | Enable the trigger(s) as desired. |
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To open an existing record on the list, either:
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The following Cron Trigger Details is for an existing Cron trigger. See the field descriptions, below, for a description of the fields that display in the Cron Trigger Details.
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Although you also can use a Time trigger to schedule a time interval for a task to be triggered on multiple days, you should use a Cron trigger if the time interval is not one by which the 24-hour clock is even divisible (2, 3, 4, 6, 8, and 12), such as in the Cron criteria examples, above. Using a Time trigger to schedule this type of time interval could produce unexpected results, since the time interval for a Time trigger does not reset at the end of the day. It continues into the next day, regardless of the 24-hour clock (see Scheduling a Time Interval with a Time Trigger).
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The Controller allows you to generate a list of future dates and times that a trigger will trigger the specified task.
Step 1 | Click the 63571356 List Qualifying Times button in the Cron Trigger Details. The List Qualifying Times Input dialog displays. |
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Step 2 | Select a Number of Dates/Times (1 - 1000) that you want to list. The default is 30. |
Step 3 | Select a Start Date from when you want the list to begin. |
Step 4 | Click the Submit button to generate the list. For example: |
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