As an older, not that aware, blonde, Polish, left handed, engineeer..... I can't keep track of more than one thing at a time. Out of self defense working on PLC's and yes discrete hard wire ladder logic in machine tools, (since about 1965), I only use normally open switches with PLC's. It reduces the task to something that I can understand. The exception to this rule is the safety loop, which should consist of nothing but normally closed switches, which is never tied into the PLC anyway, or it shouldn't be, my apologies to Pilz and a few others that make intrinsically safer PLC's. Invert the signals in one logic level only! When you are working to a deadline to get a piece of equipment running again, there are enough stress/distractions, don't make the task more difficult. A further concern that comes to mind is whether another person can follow you and do the repair? And if the repair/upgrade happened more than two weeks ago, that person is you! and you won't remember what you did, so you will have to relearn the logic More self defense.... I only use power on timers in PLCs, if I need something else, I build it in the PLC logic, it does no one any service to combine timer types in a single PLC program to save a few lines of programming. ----- Original Message -----
From: [email protected] To: [email protected] Sent: Tuesday, March 24, 2015 11:10:26 PM Subject: Emc-users Digest, Vol 107, Issue 58 Send Emc-users mailing list submissions to [email protected] To subscribe or unsubscribe via the World Wide Web, visit https://lists.sourceforge.net/lists/listinfo/emc-users or, via email, send a message with subject or body 'help' to [email protected] You can reach the person managing the list at [email protected] When replying, please edit your Subject line so it is more specific than "Re: Contents of Emc-users digest..." Today's Topics: 1. Re: gcmc - 1.5.3 (TonyZPP) 2. Re: gcmc - 1.5.3 (Bertho Stultiens) 3. Re: Ladder logic documentation [Was: Simple, adjustable timer] (Gregg Eshelman) 4. Anyone remember the Purdue CAD-LAB? (Gregg Eshelman) 5. Re: Anyone remember the Purdue CAD-LAB? (andy pugh) 6. Re: Anyone remember the Purdue CAD-LAB? (Gregg Eshelman) 7. InfraRecorder google Chrome download warning? (Mark Johnsen) ---------------------------------------------------------------------- Message: 1 Date: Mon, 23 Mar 2015 12:25:55 -0400 From: "TonyZPP" <[email protected]> Subject: Re: [Emc-users] gcmc - 1.5.3 To: "Enhanced Machine Controller \(EMC\)" <[email protected]> Message-ID: <7E1B5A6DE4FE4DE08EC2D8BBBF51BBC4@E5530Laptop> Content-Type: text/plain; format=flowed; charset=iso-8859-1; reply-type=original Bertho, Thank you for continuing to support your program, GCMC, and for keeping it current. I use it often. It has served me well. Tony -----Original Message----- From: Bertho Stultiens Sent: Sunday, March 22, 2015 6:42 AM To: Enhanced Machine Controller (EMC) Subject: [Emc-users] gcmc - 1.5.3 Hi All, A new version 1.5.3 of gcmc has been released. This release is a bugfix release and fixes relative movement. The movement would be calculated twice if the destination was within 1e-12 (epsilon) of zero, resulting in the wrong path. You can get the new version from the homepage: http://www.vagrearg.org/content/gcmc As usual, let me know if you encounter bugs or have any questions or wishes. -- Greetings Bertho (disclaimers are disclaimed) ------------------------------------------------------------------------------ Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------ Message: 2 Date: Mon, 23 Mar 2015 20:16:40 +0100 From: Bertho Stultiens <[email protected]> Subject: Re: [Emc-users] gcmc - 1.5.3 To: "Enhanced Machine Controller (EMC)" <[email protected]> Message-ID: <[email protected]> Content-Type: text/plain; charset=windows-1252 On 03/23/2015 05:25 PM, TonyZPP wrote: > Thank you for continuing to support your program, GCMC, and for keeping > it current. I use it often. It has served me well. You are welcome. I love to fix gcmc's bugs(*) and implement useful features. The more users, the better it gets ;-) (*) That is, fix it when I do not have to hide in shame for some bad code I produced when my mind took off on a tangent. Luckily, that does not happen too often. -- Greetings Bertho (disclaimers are disclaimed) ------------------------------ Message: 3 Date: Mon, 23 Mar 2015 21:59:04 -0600 From: Gregg Eshelman <[email protected]> Subject: Re: [Emc-users] Ladder logic documentation [Was: Simple, adjustable timer] To: [email protected] Message-ID: <[email protected]> Content-Type: text/plain; charset=utf-8; format=flowed On 3/23/2015 7:37 AM, Erik Christiansen wrote: > On 23.03.15 08:33, Mark Wendt wrote: >> >> So, following that logic, "off" is "on," and "on" is "off." ;-) > > Taking such facetiousness at face value, I think the real situation is: > > "OFF" is "on" and "off", and "ON" is "on" and "off" > where OFF/ON is input, and on/off is output, with no and nc contacts > simply being the complement of each other. Sounds like a meditation mantra from an old SciFi book, I have it somewhere, can't recall the author or title right now... note the capitalization... Is Not is not Not Is. Not Is is not Is Not. If Is is Is Not and Is Not is Is then Is is Not Is... IIRC it had something to do with reality VS one's perception of reality and getting rid of misperceptions that limit one's potential. --- This email has been checked for viruses by Avast antivirus software. http://www.avast.com ------------------------------ Message: 4 Date: Mon, 23 Mar 2015 22:31:47 -0600 From: Gregg Eshelman <[email protected]> Subject: [Emc-users] Anyone remember the Purdue CAD-LAB? To: "Enhanced Machine Controller (EMC)" <[email protected]> Message-ID: <[email protected]> Content-Type: text/plain; charset=utf-8; format=flowed Circa 1999 Purdue University's CAD-LAB developed some CAD/CAM software for Windows, Macintosh and Linux I'd like to obtain copies of. The main reason I'd like to get that is because some of it was written specifically for a proLIGHT PLM2000. The tutorial showing how to use the software is very interesting - but without the software it only makes me look grimly at the old DOS program and wish for LCNC support for the PLM2000. (Or support from *any* somewhat modern machine control software.) Being open source, recovering it should be of some benefit at large for CAD/CAM development. archive.org saved the website and some of the documentation but not the software due to their FTP server having a robots'txt file at the root level. Since then the university has completely altered their public FTP (what little there is of it) and nothing from then is there. The functions of the CAD-LAB have been spread around the engineering department. It doesn't matter if a robots.txt expressly permits spiders, crawlers and archivers (which Purdue's did), archive.org will not save anything from any site or server at or below the level where a robots.txt file is. As for getting G-code that works on the PLM2000, I've successfully used Heeks with the LCNC post process option, have to comment out the G43 it insists upon inserting and I have to edit the feed rate, which for some reason it always sets at 4 IPM no matter what I select in the GUI. Eh, it's a work in progress and only cost $15 for the no-nag version. At least I can cut metal in fancy shapes! :) The major difference between the Animatics and Fanuc controllers Light Machines used is Animatics defaults to incremental arc centers (put a $ in the NC file to switch to absolute) while the later Fanuc model defaults to absolute arc centers (add a % to the NC file to switch to incremental). --- This email has been checked for viruses by Avast antivirus software. http://www.avast.com ------------------------------ Message: 5 Date: Tue, 24 Mar 2015 14:19:16 +0000 From: andy pugh <[email protected]> Subject: Re: [Emc-users] Anyone remember the Purdue CAD-LAB? To: "Enhanced Machine Controller (EMC)" <[email protected]> Message-ID: <can1+yzxmed3yaoetjvrjb+gpxtcgckcbndyawpcg_uus_pm...@mail.gmail.com> Content-Type: text/plain; charset=UTF-8 On 24 March 2015 at 04:31, Gregg Eshelman <[email protected]> wrote: > it only makes me > look grimly at the old DOS program and wish for LCNC support for the > PLM2000 Have you made any progress on sniffing the communication protocol? -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto ------------------------------ Message: 6 Date: Tue, 24 Mar 2015 18:04:59 -0600 From: Gregg Eshelman <[email protected]> Subject: Re: [Emc-users] Anyone remember the Purdue CAD-LAB? To: "Enhanced Machine Controller (EMC)" <[email protected]> Message-ID: <[email protected]> Content-Type: text/plain; charset=utf-8; format=flowed On 3/24/2015 8:19 AM, andy pugh wrote: > On 24 March 2015 at 04:31, Gregg Eshelman <[email protected]> wrote: >> it only makes me >> look grimly at the old DOS program and wish for LCNC support for the >> PLM2000 > > Have you made any progress on sniffing the communication protocol? Don't know what I'd need to do that. Possibly a terminate and stay resident (TSR) program for DOS that mirrors all to and from communication on COM1... The controller has a terminal mode that can be accessed by starting PLM2000 with the /T switch. --- This email has been checked for viruses by Avast antivirus software. http://www.avast.com ------------------------------ Message: 7 Date: Tue, 24 Mar 2015 23:02:01 -0700 From: Mark Johnsen <[email protected]> Subject: [Emc-users] InfraRecorder google Chrome download warning? To: [email protected] Message-ID: <CAAAE+A04ZcS0rTgjX47y_OC=djxkodnyhufhecz5ec5foax...@mail.gmail.com> Content-Type: text/plain; charset=UTF-8 I needed a windows ISO burner and went to the LinuxCNC site because I had gotten one there before. I found infraRecorder on LinucCNC.org here: http://linuxcnc.org/docs/html/common/Getting_LinuxCNC.html#_burning_the_cd When I downloaded, it linked me to downloads.sourceforge... and once it started downloading, Google Chrome put up a RED screen and halted the download. Are there any issues w/ Sourceforge and google? I ended up downloading anyway and I didn't get extorted yet... Lastly, there are some dead links on the linuxCNC Download page: http://www.linuxcnc.org/index.php/english/download I looked briefly to see if I could edit and didn't find a way. The problem is that the links point to EMC and not CNC in the "getting _LinuxCNC": http://linuxcnc.org/docs/html/common/Getting_LinuxCNC.html#_burning_the_cd Regards, Mark ------------------------------ ------------------------------------------------------------------------------ Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ ------------------------------ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users End of Emc-users Digest, Vol 107, Issue 58 ****************************************** ------------------------------------------------------------------------------ Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
