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With release 2405 you will find a new plugin in design time of Digital Manufacturing Line Monitor. The plugin Line Monitor Shift Progress allows you to track production progress for a resource and material within a selected shift comparing actual yield quantity and target quantity and a delta quantity calculated for the current timestamp. You can leverage an aggregated quantity view for the complete shift as well as an hourly view within the selected shift. The plugin can as well be used in any other POD. The plugin can be used multiple times within a single Line Monitor instance. As the plugin is designed to expose data in the context of a shift, you must configure the Line Monitor Selection (Line Monitor Filter Bar in other PODs) at design time to use the Time Range Type Selected Shift.
At design time, the Line Monitor Shift Progress plugin offers three configuration parameters:
- Display Hourly Progress
- Enable Resource Selection
- Enable Custom Data Rate
The first parameter Display Hourly Progress allows you to define whether the plugin shall display an aggregated view of production progress quantities for the complete shift or whether it shall display the production progress per hour within the selected shift. Total target quantity, actual quantity, delta quantity, remainder and scrap quantity will be exposed in the header for both types of progress views. The different types of quantity will be explained in detail below. The plugin at runtime will look as the example below, where it is added to the Production Detail view.
The second parameter Enable Resource Selection provides the option to display in the plugin header a dropdown list for resource selection at runtime. This is supporting the use case of work centers with multiple resources relevant for production progress. It can be disabled if a single resource is assigned to the work center or if the custom extension point of the new plugin is implemented to derive the resource without being displayed. The custom extension point can as well be used to filter or extend the list of resources and to set the default resource.
The third parameter Enable Custom Data Rate is used to define whether the target quantity shall be calculated based on a resource standard rate applicable for all orders, or whether the rate shall be calculated as maintained individually per order leveraging a custom data field. For the first option, the precedence of rate selection is the same as for OEE. For the second option you must define a new custom data field LM_PRODUCTION_RATE for orders.
The data field can then be set for an order following the format [["<operation activity>","<operation activity ID>",<value of quantity>,<value of time>,"<UNIT OF TIME>"]]. You can specify rates for each operation activity that shall be considered to calculate the different quantities exposed in the plugin. Multiple entries must be separated by a comma as depicted below.
The <UNIT OF TIME> supports the following entries: <SECONDS>, <MINUTES>, <HOURS>, and <DAYS>.
The Total Target quantity is calculated using the rate of production per valid SFC operation activity, either taken from the resource standard rate or from the custom data field of the respective orders. Via both options you can specify which operation activities shall be considered to calculate the respective production progress figures to be displayed.
The calculation that produces the Total Target quantity includes the valid operation activities across all of the SFCs of all the orders of the shift, resource, and material.
It's important to know that operation activities that are started but not yet completed are assumed to run until the end of the shift. When all the operation activities running during the shift are completed, the last one completed is assumed to run until the end of the shift. This assumption is taken to assure existence of a target quantity for the shift at any time during the shift, regardless of whether an SFC operation activity is currently executed.
You can find further details and examples of total target calculation in the SAP Help documentation.
The Total Target quantity is shown as a figure in the plugin header and additionally is depicted as a vertical black line in the aggregated view. Target quantity is depicted as horizontal line per hour in the hourly view. Considering the above mentioned it is important to understand that Target quantity can change multiple times during a shift, depending on the SFC operation activities having been executed and currently being executed at the selected resource.
The Actual quantity is calculated from the yield posted for the operation activities within the shift that are valid for production progress. As stated above, you can filter valid operation activities by maintaining the respective production rate at operation activity level. The Actual quantity is shown as a figure in the plugin header and additionally is depicted as a blue bar in the chart for aggregated view as well as in the chart for hourly view.
The Delta quantity is calculated to visualize whether at the current timestamp the production progress is ahead of expected quantity or behind. It is calculated as the difference between actual quantity and target quantity at the current timestamp. If actual quantity is greater or equal target quantity, the Delta quantity will be shown in black color in the plugin header. If the actual quantity is less than target quantity, the Delta quantity will be shown in red color in the plugin header and additionally as a red bar in the chart for aggregated view as well as in the chart for hourly view. In the hourly view, the Delta quantity will be exposed as Total Delta for the shift in the plugin header, and additionally as calculated per hour.
As in many production processes the quantities for yield and scrap are posted after certain time intervals (e.g. every 15 minutes, every hour), new calculation and exposure of delta quantities will be executed at the rate which is maintained in either the resource standard rate or the rate maintained as order custom field. This behavior prevents that a negative delta quantity is calculated and exposed between standard cycle time within which yield and scrap are posted.
The Remainder quantity is showing the difference between total target quantity and actual quantity, and is exposed as a figure in the plugin header.
The Scrap quantity is depicting the aggregated scrap posted in the shift until the current timestamp. It s exposed as a figure in the plugin header.
All configuration, and figures exposed in the plugin, are explained in detail in the SAP Help documentation where you will as well find examples of settings and respective quantity calculations.
As indicated above, there are custom extension points delivered for the plugin. There are three distinct extension events, supporting
- resource filter - to modify the set of resources shown in the dropdown
- default resource - to choose or set the initial resource selection
- quantity value modification - modify calculated quantity data, e.g. assign different values for current target/delta, format decimal values, etc.
You can find extension implementation samples here and a tutorial here.
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