When I red this thread I realised that I can put Windows XP & WinCC on one side and on virtual PC instal Windows 98 and DOS application. I have to find drivers for all external hardware that I want to use. Big problem is communication with TP because it has only floppy disk. Then I realised that Windows versions after Win98 are controling the serial port and had to reinstal Win98 and all aplications again. When panel`s HD broke down we changed it and I installed XP Prof, WinCC 4.02 and this DOS application but communication with Pentax( 5 axis controler) was imposible. On the PC based touch panel, under Windows 98 communication with PLC is established through WinCC 4.02 project and communication with 5 axis controler throught (I am 99% shure) DOS application. The good news is that the update rate seems to be fast enough. S7 users, DON'T TAKE SNAP SHOTS UNLESS YOU ARE WILLING TO REBOOT YOUR COMPUTER!!! Beware, there are bugs out there in VMWare land. I had to reboot the host system and start the virtual system and reset/select my USB to MPI adapter to get back on-line again. Step7 would not comminicate any more and it said my adapter was damaged. Note, I tried making a snapshoot of by VMWare virtual machine and it 'damaged' my USB to MPI adapter. I can't see VMWare making their software free I can see MS making virtual PC free because they expect to sell more Windows XP on each virtual machine. They annouced that VMWare is 'free' too around the 4th of July. I listen to slashdot review podcasts while exercising. The vista is just a prerelease version for those willing to waster their time and PC on buggy software. I have found that people have a very hard time writing commands or data the take several scans to complete because:ġ they are not familiar with state machines.Ģ they are not experience at doing indexed addressing on a S7. What where the main problems with the interface? I would like to know so I can avoid these mistakes. I'm sure STL would be faster and better but it got the job done. I used S7-Graph for the sequence and S7-SCL to index through the array. I've been working something similar with a Yamaha robot controller. I haven't looked to see if there is a UDT limit. This means I would have to have a UDT define for each command but that would be less code than a bunch of different motion blocks like the way Rockwell did their motion blocks. I was thinking of simplifying this so that the command takes just an any pointer to a structure define by a UDT. Yes, I have funcitonal blocks now but they take a lot of parameters. Technically it is the same as using RAID on a server, it just depends on how necessary it is to maintain your computer at a certain point. For a laptop an external drive etc will work. The easiest method, for me, is use an equal sized hard drive and have it saved on that. I am not sure about some software but Norton Ghost or Save and Restore can save on the fly, using scheduled backups, and multiple saves, just depends on what you want to do.Ī simple example when installing new software would be make an image prior to it then do your install, if there is a problem then you can return to the exact point you were at prior to that install. In other words this is not handy if testing phase lasts days, weeks or longer and if this is machine that serves other purposes than testing one product (personal computer for example). This is why drive image is good for restoring machine from serious crash/infestation etc.,īut it's not good for testing - unless test is either short test or it's done on a dedicated machine. If you dump the image back, those changes are lost. If you make backup of a drive, it's only good if you don't work with that PC on something else so no new files are created (or emails received or sent etc.).
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