IBA ibaFOB-PlusControl Manual page 24

 Bad telegrams
Counter of faulty telegrams
 Dropped telegrams
Counter of dropped telegrams
 Time between telegrams
Interval between the last 2 correctly received telegrams
 Expected data ID, received data ID
The IDs are used to identify the received data in ibaPDA. The ID is incremented by
every request. The ID in the measurement data telegram must match the ID of the
request telegram. Otherwise the data will be dropped.
 Data timeout
ibaPDA monitors the telegram counter of the measurement data telegrams. If the
counter does not change within the timeout calculated according to the cycle time,
the data is set to 0.
 System info
System information is displayed in this field, which is read from the
PLUSCONTROL CP while testing the connection.
DMA tab
Figure 18:
The tab gives information about the image generation (process image). An image is a
dataset which is written by the card to the computer memory via DMA. This image con-
tains all data of the measured signals within a sample on the respective link.
Here is a short description of the image generation information:
 Images processed at interrupt:
These counters show how many images were available in the DMA buffer when the
last interrupt fired. This value should normally correspond with the interrupt time di-
vided by the image sampling rate.
 Images in DMA buffer:
This is the number of images that are in the DMA buffer. This number should remain
constant. If this number starts increasing then something is wrong. This may hap-
pen if e.g. an interrupt is missed.
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DMA
Manual
Issue 1.1
ibaFOB-PlusControl