XCP Pro V3.3Q (Xinje XC Series PLC Program Tool) is a software for programming XC series of XINJE. The interface and programming method of the software are relatively similar to the Mitsubishi PLC and the hardware is similar.
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Today will I take you through the keyhole to look at a group of software systems not well known to the public, which I call "Bank Python". Bank Python implementations are effectively proprietary forks of the entire Python ecosystem which are in use at many (but not all) of the biggest investment banks. Bank Python differs considerably from the common, or garden-variety Python that most people know and love (or hate).
Walpole does all the usual stuff you need to run your software. It can restart your software if it crashes and sends out alerts if it keeps crashing. It stores logs. It understands dependencies between jobs (much like systemd does) so if the job that generates the data your job needs fails, you job doesn't even try starting up but instead fires more alerts.
MnTable gets used everywhere in Bank Python. Some implementations are lumps of C++ (not atypical of financial software) and some are thin veneers over sqlite3. There are many, many programs which start with an MnTable, apply some list of operations to it and then forward the resulting table somewhere else.
I can just about understand why Minerva has its own IDE - no other IDEs work if you keep your source files in a giant global database. What I can't understand is why it contains its own web framework. Investment banks have a one-way approach to open source software: (some of) it can come in, but none of it can go out. The github profiles of the bulge bracket investment banks are anaemic compared to those of comparably sized companies in different industries. This highly proprietary attitude has remained even as the Volcker Rule has forced nearly all of the proprietary trading out of investment banks. It is a curse.
It could be that the biggest disadvantage is professional. Every year you spend in the Minerva monoculture the skills you need interact with normal software atrophy. By the time I left I had pretty much forgotten how to wrestle pip and virtualenv into shape (essential skills for normal Python). When everything is in the same repo and all code is just an import away, software packaging just does not not come up.
One of the slightly odd things about Minerva is that a lot of it is "data-first", rather than "code-first". This is odd because the majority of software engineering is the reverse. For example, in object oriented design the aim is to organise the program around "classes", which are coherent groupings of behaviour (ie: code), the data is often simply along for the ride. Writing programs with MnTable is different: you group the data into tables and then the code lives separately. These two lenses for organising computations are at the heart of the object relational impedance mismatch which has caused such grief. The force is out of balance: many more programmers can design decent object-oriented classes than can bring a set of tables into third normal form. This is a large part of the reason that that annoying impedance mismatch keeps coming up.
Minerva is obviously heavily influenced by the technological path dependency of the financial sector, which is another way of saying: there is a lot of MS Excel. Any new software solution is going to be compared with MS Excel and if the result is unfavourable people will often just use continue to use Excel instead. Many, many technologists have taken one look at an existing workflow of spreadsheets, reacted with performative disgust, and proposed the trifecta of microservices, Kubernetes and something called a "service mesh".
This kind of Big Enterprise technology however takes away that basic agency of those Excel users, who no longer understand the business process they run and now have to negotiate with ludicrous technology dweebs for each software change. The previous pliability of the spreadsheets has been completely lost. Using simple Python functions, in a source controlled system, is a better middle ground than the modern-day equivalent of J2EE. Financiers are able to learn Python, and while they may never be amazing at it they can contribute to a much higher level and even make their own changes and get them deployed.
One thing I regret about software as a field is how little time is spent learning from existing systems and judging what they did well, or badly. There are only a small number of books discussing, in detail, real systems that exist.
One of things that tends to boggle programmer brains is while most software dealing with money uses multiple-precision numbers to make sure the pennies are accurate, financial modelling uses floats instead. This is because clients generally do not ring up about pennies.
1. Open BoardMaster a. Answer the "Where is the tool?" prompt. There seems to be no way to answer this question correctly, just click "ok". b .IF the program just crashed, and a tool is stuck in the clamp, you can answer it correctly. Fill out the "free tool position". 2. File->Import->LMD. select your exported file from CircuitCAM. 3. All of your operations (marking drills, plated drills, top milling, bottom milling, etc.) are listed in a drop-box in the upper left of the BoardMaster window. 4. Check each operation and look individually and look for the time-duration (actual time will be much longer!). This is indicated in the upper right. 5. Save after you do your project setup in case the software hangs. This happens frequently. 6. Confirm placement of work material in the software. a. Click the "Pause" icon (blue P) to move the machine head to the back right and slide the work platform forward. b. Place a predrilled sheet of copper onto the mounting pins on the stage. c. Manually move the head over the lower left corner of the work piece. You can move the head with the mouse, "click-to-move" button for rough movement, then the icons to move up-left-down-right until it is at the desired location. You can also use the up and down arrows to lower the spindle to get a better angle. d. Select Configuration->Material->low-corner in the menu to store the lower-left position. e. Move the head to the upper-right corner, and select Configuration->Material->High Corner to store the upper-right position. f. You should now see a dark gray rectangle in the BoardMaster view that corresponds to the stock material. It is allright if your markings are approximate so long as the piece you are going to cut fits within the stock. 7. Position your circuit on the gray board rectangle. a. In the Placement window (Edit->Placement) adjust the X and Y Origin values until the board is well positioned. b. you can click the "Center" button to center the circuit on the material, and work from there. 8. Check drill/cutting depth. As far as I can tell, our best option for checking cutting depth / cut width is to pick one of your main bits (say the 0.2mm / 8 mil universal cutter), and do some test cuts on your material. You can manually adjust the height of the cut-guard with the large disk on the head of the cutter. Rotating the disk from right to left makes the cut deeper, rotating the disk from left to right makes the cut more shallow. Adjust the cutter until it just barely penetrates the copper layer on the board you are cutting. This means it is giving you the narrowest possible channel/cut it can make. a. Too check the cutting depth you will manually control the router. There is a four-way controller (up-down-left-right) and up/down z-axis icons to move the head. There is a "lower bit to board" button. And a "spin up spindle" button. b. load the small universal cutter into the spindle. (select from drop down list in upper left corner) c. move the spindle to an open spot on the board. d. start the spindle by clicking on the Start Spindle icon in toolbar. e. lower it to the board by clicking the "Head's position" icon in toolbar. f. manually scoot the mill to the left or right to cut a short path. g. raise the spindle. h. stop it. i. move it out of the way. (You can use the "Pause" button (P icon) to move it to a pause position. Or you can use the "Home" icon). j. check your depth. adjust if necessary and repeat. 9. Select the first set of operations in the drop-down list in the upper-left above the workspace view. This will most-likely be "Marking Drills". 10. Check tool library. Click "Open Toolbox Dialog" icon to see what tools are required for the current operation. a. Be sure the tool listed under "Wanted for current job (phase)" is present in the tool positions list on the left side of the window. b. Be sure that the tools in the tool holders at the back of the stage correspond correspond to their description in the tool list in the software. This involves checking the actual tools in the tool holders at the back of the stage against the tools listed in the toolbox dialog. 11. Click the "All+" icon in the upper-right to add all operations of the current type to the current job. Duration field should increase to something more than 0:00 if there are any operations of the current type. 12. Save your project file. The program may hang when you click start. 13. Click "Start." a. if there is a window saying "HF Spindle warming up time...", everything is working. Let it warm up. b. If there is a window saying "Waiting to Transmit", the software has most likely hung. 1. Close the program. Click through any popup boxes. 2. Restart the program and load your project. Thank god you saved your file. Go back to step 11 14. Move to the next set of operations in the the operations drop-down list. You will do the following operations, which correspond to the layers imported: a. "1. MarkingDrills" b. "2. DrillingPlated" c. "5. MillingBottom" d. "7. MillingTop" e. "10. CuttingOutside" f. If you are switching from Bottom-Side to Top-Side operations, flip the board over vertically (keeping the left on the left and the right on the right), push it down on the mounting pegs again, and continue. 15. repeat steps 9-14 until you have finished all machining operations.If you want to get more help on this, please watch the Tutorial Videos on the training DVD from LPKF. They are very useful, and should be sitting in a CD case next to the LPKF machine with the other software and manuals. 2ff7e9595c
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