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General speaking, the progress of the three major projects have been breakthrough in this week. The first one is the most long time on-going project, which has carried out more than ten months: the software of the servo press. It would applied in collecting the data from sensor in machine and make the further analysis for exporting the report. However, the fundamental functions had been developed prior to the automation in Taipei this year, the additional application still have been demanded for gaining competitive. Recently, the issue of over slowly data transferring and recording have been discussed and required to make the clearly improvement. Due to the transfer speed rate limitation of the Modbus protocol, we are not able to solve the problems merely revise the code slightly. Thus, we attempt to seek the broadly application such as building buffer and read the batch of data once a time.

Fortunately, the batch read in Modbus is not the rare application. We have found out the available library soon after, although it only support for the 16 bits and acquire the data from 100 register at one time. Above problems will not be difficult to be solved by building the proper program. We can read more times to settle the limitation of acquiring data and combine the two 16 bits into the 32bits data. Nonetheless, the coming function might be much more challenging. We have to read the batch data according to the command in PLC. The PLC would save the data in two main buffer regions. Thus, when the PLC is saving data in one region, our program is necessary to acquire the batch data from another in the short time. Afterward, the batch data is supposed to be combined and sort into something seems like transferred one by one. Finally, I have built the complete class to carry all of above process. The key point in this function would be the switch the reading buffer and sort out the large amount of data without messing up.

After the three weeks of hard work, we finally finished the tasks. It could be executed just like before, but it would be able to record the data two hundred in a second. It exactly the most important breakthrough of data transfer during these months and we could thus focus on other issue without the unsolved problems.