Merge pull request #124142 from OzBob/patch-4

Update functions-bindings-timer.md CRON

Author: Jak-MS

articles/azure-functions/functions-bindings-timer.md

@@ -238,7 +238,7 @@ Write-Host "PowerShell timer trigger function ran! TIME: $currentU
 
 |Attribute property | Description|
 |---------|----------------------|
-|**Schedule**| A [CRON expression](#ncrontab-expressions) or a [TimeSpan](#timespan) value. A `TimeSpan` can be used only for a function app that runs on an App Service Plan. You can put the schedule expression in an app setting and set this property to the app setting name wrapped in **%** signs, as `%ScheduleAppSetting%`. |
+|**Schedule**| A [NCRONTAB expression](#ncrontab-expressions) or a [TimeSpan](#timespan) value. A `TimeSpan` can be used only for a function app that runs on an App Service Plan. You can put the schedule expression in an app setting and set this property to the app setting name wrapped in **%** signs, as `%ScheduleAppSetting%`. |
 |**RunOnStartup**| If `true`, the function is invoked when the runtime starts. For example, the runtime starts when the function app wakes up after going idle due to inactivity. when the function app restarts due to function changes, and when the function app scales out. *Use with caution.* **RunOnStartup** should rarely if ever be set to `true`, especially in production. |
 |**UseMonitor**| Set to `true` or `false` to indicate whether the schedule should be monitored. Schedule monitoring persists schedule occurrences to aid in ensuring the schedule is maintained correctly even when function app instances restart. If not set explicitly, the default is `true` for schedules that have a recurrence interval greater than or equal to 1 minute. For schedules that trigger more than once per minute, the default is `false`. |
 
@@ -256,7 +256,7 @@ For Python v2 functions defined using a decorator, the following properties on t
 | Property    | Description |
 |-------------|-----------------------------|
 | `arg_name` | The name of the variable that represents the timer object in function code. |
-| `schedule` | A [CRON expression](#ncrontab-expressions) or a [TimeSpan](#timespan) value. A `TimeSpan` can be used only for a function app that runs on an App Service Plan. You can put the schedule expression in an app setting and set this property to the app setting name wrapped in **%** signs, as in this example: "%ScheduleAppSetting%".  |
+| `schedule` | A [NCRONTAB expression](#ncrontab-expressions) or a [TimeSpan](#timespan) value. A `TimeSpan` can be used only for a function app that runs on an App Service Plan. You can put the schedule expression in an app setting and set this property to the app setting name wrapped in **%** signs, as in this example: "%ScheduleAppSetting%".  |
 | `run_on_startup` | If `true`, the function is invoked when the runtime starts. For example, the runtime starts when the function app wakes up after going idle due to inactivity. when the function app restarts due to function changes, and when the function app scales out. *Use with caution.* **runOnStartup** should rarely if ever be set to `true`, especially in production. |
 | `use_monitor` | Set to `true` or `false` to indicate whether the schedule should be monitored. Schedule monitoring persists schedule occurrences to aid in ensuring the schedule is maintained correctly even when function app instances restart. If not set explicitly, the default is `true` for schedules that have a recurrence interval greater than or equal to 1 minute. For schedules that trigger more than once per minute, the default is `false`. |
 
@@ -290,7 +290,7 @@ The following table explains the properties that you can set on the `options` ob
 
 | Property | Description |
 |---------|----------------------|
-|**schedule**| A [CRON expression](#ncrontab-expressions) or a [TimeSpan](#timespan) value. A `TimeSpan` can be used only for a function app that runs on an App Service Plan. You can put the schedule expression in an app setting and set this property to the app setting name wrapped in **%** signs, as in this example: "%ScheduleAppSetting%". |
+|**schedule**| A [NCRONTAB expression](#ncrontab-expressions) or a [TimeSpan](#timespan) value. A `TimeSpan` can be used only for a function app that runs on an App Service Plan. You can put the schedule expression in an app setting and set this property to the app setting name wrapped in **%** signs, as in this example: "%ScheduleAppSetting%". |
 |**runOnStartup**| If `true`, the function is invoked when the runtime starts. For example, the runtime starts when the function app wakes up after going idle due to inactivity. when the function app restarts due to function changes, and when the function app scales out. *Use with caution.* **runOnStartup** should rarely if ever be set to `true`, especially in production. |
 |**useMonitor**| Set to `true` or `false` to indicate whether the schedule should be monitored. Schedule monitoring persists schedule occurrences to aid in ensuring the schedule is maintained correctly even when function app instances restart. If not set explicitly, the default is `true` for schedules that have a recurrence interval greater than or equal to 1 minute. For schedules that trigger more than once per minute, the default is `false`. |
 
@@ -303,7 +303,7 @@ The following table explains the binding configuration properties that you set i
 |**type** | Must be set to "timerTrigger". This property is set automatically when you create the trigger in the Azure portal.|
 |**direction** | Must be set to "in". This property is set automatically when you create the trigger in the Azure portal. |
 |**name** | The name of the variable that represents the timer object in function code. | 
-|**schedule**| A [CRON expression](#ncrontab-expressions) or a [TimeSpan](#timespan) value. A `TimeSpan` can be used only for a function app that runs on an App Service Plan. You can put the schedule expression in an app setting and set this property to the app setting name wrapped in **%** signs, as in this example: "%ScheduleAppSetting%". |
+|**schedule**| A [NCRONTAB expression](#ncrontab-expressions) or a [TimeSpan](#timespan) value. A `TimeSpan` can be used only for a function app that runs on an App Service Plan. You can put the schedule expression in an app setting and set this property to the app setting name wrapped in **%** signs, as in this example: "%ScheduleAppSetting%". |
 |**runOnStartup**| If `true`, the function is invoked when the runtime starts. For example, the runtime starts when the function app wakes up after going idle due to inactivity. when the function app restarts due to function changes, and when the function app scales out. *Use with caution.* **runOnStartup** should rarely if ever be set to `true`, especially in production. |
 |**useMonitor**| Set to `true` or `false` to indicate whether the schedule should be monitored. Schedule monitoring persists schedule occurrences to aid in ensuring the schedule is maintained correctly even when function app instances restart. If not set explicitly, the default is `true` for schedules that have a recurrence interval greater than or equal to 1 minute. For schedules that trigger more than once per minute, the default is `false`. |
 
@@ -320,7 +320,7 @@ The following table explains the binding configuration properties that you set i
 |**type** | Must be set to "timerTrigger". This property is set automatically when you create the trigger in the Azure portal.|
 |**direction** | Must be set to "in". This property is set automatically when you create the trigger in the Azure portal. |
 |**name** | The name of the variable that represents the timer object in function code. | 
-|**schedule**| A [CRON expression](#ncrontab-expressions) or a [TimeSpan](#timespan) value. A `TimeSpan` can be used only for a function app that runs on an App Service Plan. You can put the schedule expression in an app setting and set this property to the app setting name wrapped in **%** signs, as in this example: "%ScheduleAppSetting%". |
+|**schedule**| A [NCRONTAB expression](#ncrontab-expressions) or a [TimeSpan](#timespan) value. A `TimeSpan` can be used only for a function app that runs on an App Service Plan. You can put the schedule expression in an app setting and set this property to the app setting name wrapped in **%** signs, as in this example: "%ScheduleAppSetting%". |
 |**runOnStartup**| If `true`, the function is invoked when the runtime starts. For example, the runtime starts when the function app wakes up after going idle due to inactivity. when the function app restarts due to function changes, and when the function app scales out. *Use with caution.* **runOnStartup** should rarely if ever be set to `true`, especially in production. |
 |**useMonitor**| Set to `true` or `false` to indicate whether the schedule should be monitored. Schedule monitoring persists schedule occurrences to aid in ensuring the schedule is maintained correctly even when function app instances restart. If not set explicitly, the default is `true` for schedules that have a recurrence interval greater than or equal to 1 minute. For schedules that trigger more than once per minute, the default is `false`. |
 
@@ -406,18 +406,19 @@ Here are some examples of NCRONTAB expressions you can use for the timer trigger
 
 > [!NOTE]
 > NCRONTAB expression supports both **five field** and **six field** format. The sixth field position is a value for seconds which is placed at the beginning of the expression.
+> If the CRON expression is invalid the Azure Portal Function Test will display a 404 error, if Application Insights is connected more details are logged there.
 
 #### NCRONTAB time zones
 
-The numbers in a CRON expression refer to a time and date, not a time span. For example, a 5 in the `hour` field refers to 5:00 AM, not every 5 hours.
+The numbers in a NCRONTAB expression refer to a time and date, not a time span. For example, a 5 in the `hour` field refers to 5:00 AM, not every 5 hours.
 
 [!INCLUDE [functions-timezone](../../includes/functions-timezone.md)]
 
 ### TimeSpan
 
  A `TimeSpan` can be used only for a function app that runs on an App Service Plan.
 
-Unlike a CRON expression, a `TimeSpan` value specifies the time interval between each function invocation. When a function completes after running longer than the specified interval, the timer immediately invokes the function again.
+Unlike a NCRONTAB expression, a `TimeSpan` value specifies the time interval between each function invocation. When a function completes after running longer than the specified interval, the timer immediately invokes the function again.
 
 Expressed as a string, the `TimeSpan` format is `hh:mm:ss` when `hh` is less than 24. When the first two digits are 24 or greater, the format is `dd:hh:mm`. Here are some examples: