Quality code
(hex)
Quality code
(dec)
Short description Long description
0x807D0000 -2139291648 Data source busy
Previous read request of data source is still in
progress
0x80840000 -2138832896 Request interrupted Request interrupted
0x80850000 -2138767360 Request timeout Receive timeout occured
0x80B10000 -2135883776 No data available No more data available
0x80B60000 -2135556096 Invalid syntax Syntax error
0x80B80000 -2135425024 Request too large Buffer is too small
0x80CE0000 -2133983232 Invalid response Received an invalid reply
8.9 Offline buffer
In order to calculate the buffer time for MindConnect Nano or MindConnect IoT2040 you can
use the following formula:
MindConnect Nano data buffer is 500 MB. When the buffer is at full capacity, the new incoming
data will overwrite the oldest data.
The following example shows the buffer time for a MindConnect Nano with 500 MB data buffer:
In this case, 120 bytes is the memory needed for one data point.
8.10 Read performance MindConnect Elements
All MindConnect Elements have a clear limitation on soft limits(unmonitored number of data
points and data connections). The only fixed limit is 1050 data points. Within the soft limits, you
can configure data connections and data points without reaching the limits. For 250 datapoints
read per second, the upload bandwidth should be at least 0.5 MB/s.
The following describes how to proceed if you want to exceed these limits.
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