HBM MP85A Operating Manual page 72

72
Fig. 8.4: Device internal evaluation times (with storage of all data to MMC/SD
card)
Data is transmitted to the memory card with a speed between 2 and
8 kBytes/second, subject to the size of the files to be transferred.
The total storage time results from the process time and the storage time on
the target computer.
CAUTION
If the process data are saved via Ethernet, the storage is dependent on
the network load. This must be taken into account with rapid process
cycle times.
Until all measured value curve data are saved to PC, the files have the file
extension .tmp. Once the data transfer is complete, the files are renamed with
the file extension C85 or D85. This means that downstream software can
clearly detect the storage status and only access the process data once
storage is complete.
Typical process times during production operation in combination with
PLC machine control
The following table shows the times that are approximately required when the
MP85A process controller exchanges cyclical data with a PLC via PROFI-
BUS, saves data to the MMC/SD card or transmits the data via Ethernet. With
INDUSTRYmonitor software running on the PC. The actually achieved values
depend on the hardware used (PC), the network components (switch) and the
network load. Times can range widely from process to process with Ethernet
in particular due to the latency time.
HBM
Measurement points
MP85A process controller
3 Windows
6 Windows
9 Windows
A2392−5.0 en