Recent content by lesliemcg

thanks for your quick reply Paul it was very helpful lesliemcg

Hi all is there a package available out there to be able to get data from a S7-300 PLC using visual basic.net I would like to use this for a display only to show a machine performance on a stand alone application i.e. machine speed, thermocouple temps etc. I am not looking for writing values...

Thanks for the help guys I now have the program working the problem was in the temp tags # not latching due to memory (thanks jacekd) and when I used the M0.0 tags instead I didnt realise they shared the same address as MW0 S7 is so diffrent from VERSAPRO (GE-FANUC) so thanks for your help...

no problem paul, it does look like a double coil error so I tried using the same logic with internal flags (m0.0 etc)instead of #temp ones I am not using set/rest on the outputs/flags just a simple latch circuit. your right, it circuit worked until I expanded it with more logic only to get...

Hi guys new project requires S7-300 plc have got a 313-2DP and am having problems with FC blocks. simple logic isnt working like there is a conflict or something. no errors are shown in simatic manager but a coil isnt latched when its supposed to???? in say motor start stop circuit. I find its...

hi i also use the toshiba satellite laptops (always have) and as jacek says it must have a rs 232 port for your comms lesliemcg

thanks for your help quark had to be sure, as a lot of calculations are being done here for this project lesliemcg

hi all, am i right that the formula to calculate torque is kw * 9550/rpm = Nm does this include ac and dc? thanks in advance lesliemcg

yes jacek, it really is a fast cylinder and high speed valve the cylinder slices through a hose and gets out of the way for the next one works well though leslie

Hi all, new to profibus i have a S7-300 (313C-2DP) and will have profibus in the system 6 drives and 10 pneumatic valves will be controlled on this bus one cylinder valve is very fast acting (12ms). will the profibus be able to switch on/off at this rate or will i have to hard wire to this valve...

hi all, looking for a pressure transducer to be installed in an extruder machine. i want to fit it into the barrel to see what pressure is being generated. maximum pressure is 250bar maximun temperature is 230 deg oC must be a 3 wire either 4-20mA or 0-10v output sizes 1/4 " or 1/2&quot...

thanks for your input tomatge a good point, i already have GE-FANUC cimplicity 50 point in the workplace but to network it around the factory i had to use DDE and export to excell for the tags to be seen by other PC users. i was just hoping for another system to do this by myself cheers lesliemcg

thanks for your reply jacekd, i'm still putting the project together so when i know the exact spec, i'll let you know the hardware thanks again lesliemcg

i think we got off in the wrong foot xnuke free labor would always be welcome but the main point i am making is that some companies do offer great tech support to get you started and up and running(what better way is there to sell a product) with the support and some homework you can set up a...

i think you are right thryll. everyone starts somewhere. i would recommend contacting the manufactures of the controls you are thinking of using. you will probally find they also offer a system which you could put together yourself (with tech support) it worked for me, my first scada, using...