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In manufacturing, it is fairly common for a production line to be running, but not actually producing parts or finished goods as part of a work order or product code run. Examples of this may be when the line is being run during scheduled maintenance to verify work has been performed to a satisfactory level. There are times when a line may be running as part of new product introduction or testing, or times when operator training is occurring. When the line is getting ready for a production run, there may be a period of time that the line is in a changeover or setup mode, and there may be times during a production run, when the line mode changes back to setup say after a fault, and material has to be run back through the extruder cell. 

In OEE 2.0, it is now possible to define modes that the line or equipment may be in and you can define whether production counts should be included during these modes or used in OEE calculations. Modes allows for a more granular analysis of equipment utilization; how much time does a line spend in maintenance, training, changeover, setup, while still allowing the equipment states of running, blocked, idle, faulted to be captured. As production counts and equipment cycles are captured in all modes, you can still use these counters to determine run hours on equipment, strokes on die sets etc., that may drive maintenance scheduling and other activities. 

Default Equipment Modes are provided for Changeover, Cleaning, Disabled, Idle, Maintenance, Other, and Production. Custom modes can also be added. The OEE Equipment Manager component is used to manage equipment mode class, state and schedule.

In this Section

How Modes Work

There are several methods of setting the mode of the line.

  1. Through OEE Operation segment execution
  2. By passing a tag value through the mode tag collector
  3. Via the system.mes.addTagCollectorValue scripting function

OEE Operation Segment Execution

The mode equipment is automatically derived based on the settings as defined in the OEE Material Manager when a production run is started through the OEE Run Director or MES Schedule View component. When an OEE operation is started, the mode as defined in the production settings complex property of the changeover segment is recorded as the state of the line and cells. When the Changeover operation is ended, the mode as defined in the production settings complex property of the production segment is recorded as the state of the line and cells. When the Operation is ended, the mode of the line and cells is set to idle.

Mode Tag Collector

The current mode can also be overridden by passing a tag value through the mode tag collector. See OEE 2.0 Downtime Tab - Equipment Mode for more details.

Setting Mode via Scripting

The system.mes.addTagCollectorValue scripting function can be used along with system.mes.updateTagCollectorValues to set the mode of equipment production items.



Equipment Mode Class

It is possible to create Equipment Mode classes that contains a set of Equipment Modes. The Equipment Mode class contains a number of pre-defined modes that you can use for all your lines or equipment. By default, we provide you with the Default Equipment Mode Class that contains the following Equipment Modes...

  • Changeover
  • Cleaning
  • Disabled
  • Idle
  • Maintenance
  • Other
  • Production


You can add or modify the equipment modes in the default class or create your own equipment mode class. 

All Equipment Mode Classes must at least contain the Equipment Modes Idle, Changeover and Production or an error will be thrown.



Adding and Editing an Equipment Mode Class

  • Select the production model item for which the equipment mode class is to be changed
  • Click on the change button next to the equipment mode class



  • The Equipment Mode List window appears. Click on Equipment Modes and select the New Equipment Mode Class


At the Equipment Mode Class level, Edit, Delete, Copy, Paste and Export operations are available. At the Equipment Mode level, only Paste, Import and Export operations are available.




  • Enter a name for the Equipment Mode Class and assign security roles you who can modify this Equipment Mode Class
  • Click Save


We cannot add an equipment mode class to an existing equipment mode class, but we can add an equipment state class to an existing equipment state class.



Adding and Editing Equipment Modes for an Equipment Mode Class

  • Select the Equipment Mode Class you wish to modify and click on the New Equipment Mode to add a new Mode
  • Select the Equipment Mode you wish to modify and click on the Edit to change the Mode
  • The Edit Equipment Mode slide out will appear. Enter a name for the mode and select the type of mode. Valid Equipment Mode Types are...
    • Changeover
    • Cleaning
    • Disabled
    • Idle
    • Maintenance
    • Other
    • Production
  • Assign a unique code to the new mode. This is used if you drive the mode of the equipment through a tag.
  • Select whether production counts during this mode are collected
  • Select whether counts and status during this mode are included in OEE calculations
  • Click Save


Code

Enter in the integer value for this equipment mode. This will generally align with the status code value from the PLC.

Undefined Equipment Mode Value

If an equipment mode value (code) appears that has not been previously assigned, Live Analysis will continue without error, but a log entry will be created to document the unknown equipment mode received:

"Unknown equipment mode (<mode>) for <equipmentPath> at <date>"

Assigned Codes

The Assigned Codes list provide a view of all codes that have already been assigned.


Include Production Counts

When Include Production Counts is selected, all production counts will be recorded during this mode. This is useful if good units are produced in a mode other than Production that should be included in the total production count for the run. For example, a setup mode can be created and units produced can be added to the total production for the run, but not necessarily included in the OEE calculations.

Include in OEE

When Include in OEE is selected, equipment states and counts that occur during this mode will be included in the OEE analysis. If the line is in a mode that has Include in OEE selected, then the elapsed time will start for OEE calculations. Planned downtime, unplanned downtime and runtime will be calculated based on changes of the equipment state and used to calculate OEE Availability. Line downtime events will be generated and displayed in the OEE Downtime Table component.


The  Include Production Counts and Include in OEE settings together provides flexibility in how counts and OEE are handled. The following table shows valid combinations of these settings and how they should be used.
Include In OEEInclude Production CountsDescription



Use for modes such as cleaning or testing, where OEE and production counts are irrelevant


 (tick)

Use for modes such as Changeover or Setup, where production counts are still required but downtime etc. should not be included in OEE calculations for the line

(tick) 


This is not a valid selection as production counts are required for OEE Performance and Quality Metrics

(tick)

 (tick)

Use for mode such as Production where production counts and OEE data is required


Delete Equipment Mode

  • Click on the Equipment Mode to be deleted and select Delete





Copy and Paste Equipment Mode

  • Select the Equipment Mode to be copied and click Copy
  • Select the Equipment Mode Class to which the mode is copied and click Paste
  • Expand the destination folder to see the pasted equipment mode






Export and Import Equipment Modes

  • Select Equipment Modes and Click Export
  • A file save dialog box will appear allowing you to select where to store the xml file
  • Select Equipment Modes and Click Import
  • Select the file to be imported and Click Open




Creating Equipment Modes Through Scripting

Refer to for more MES Equipment Mode information.


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