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The Xentara OEE Calculator v1.0.1
User Manual
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The Xentara OEE Calculator v1.0.1
User Manual
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The Quality Rate is a factor type of xentara data point which calculates the Quality Rate the produced products. It calculates the rate of the good the products produced against the number of the total Actual product.
On sample task the Quality Rate reads the variables for the current state of the system.
The required variables for sampling are:
The rejected product describes the number of the products that have rejected at that time. The rejected product expected to be a counter with constantly increasing value.
The total actual product describes the number of the products that have produced at that time. The total actual product expected to be a counter with constantly increasing value.
During the sampling period, the quality and the error of the Quality Rate is evaluated on sample task. The quality and the error are propagated the only if the current quality is worst compared with the previous quality until the sampling period is finished with an update task.
On sample task, the intermediate attribute values are updated for quality rate, rejected product, total actual product and good product. On update task The quality rate value is calculated and updated and intermediate attribute values are reset.
The quality rate is calculated by using the following variables:
The intermediate rejected product describes the number of defected products since the update task until the last sample task.On update task the current value of the rejected product it is set as bias value. The positive difference between the bias value and the rejectd product is read on sample task is defined as intermediate rejected product.
The intermediate total actual product describes the total number of products since the update task until the last sample task.On update task the current value of the total actual product it is set as bias value. The positive difference between the bias value and the total actual product is read on sample task is defined as intermediate total actual product.
The intermediate good product describes the number of good products. It is calculated by subtracting the number of the intermediate rejected product from the intermediate total actual product.
The Calculation of the quality rate follows the graph bellow:
In addition to the standard members of Xentara I/O points, Quality Rate has the following attributes:
| value | Contains the rate quality rate value of the last update task performed. |
| quality | The quality of the Quality Rate value. See quality in the Xentara user manual for an explanation of an I/O point's quality. |
| sampleTime | The last time the quality rate value sampled. |
| changeTime | The last time the quality rate value changed. |
| error | The error that occurred the last time the quality rate value updated. The attribute contains one of the error string value describing the error state. |
| intermediateGoodProduct | The intermediate value of the good products produced since the last sample task is performed. The attribute contains value type of integer |
| intermediateRejectedProduct | The intermediate value of the rejected products since the last sample task is performed. The attribute contains value type of integer |
| intermediateTotalActualProduct | The intermediate value of the total actual product since the last sample task is performed. The attribute contains value type of unsigned integer |
| intermediateQualityRate | The Intermediate value of quality rate since the last sample task is performed. The attribute contains value type of a double |