gruntstripe

Hi, Hope the New Year has got off to a good start for everyone. How do I drive a 7 segment display? There is an instruction in S7 Microwin but I can't find anything in S7 lite, with which I have little experience yet. Thanks in advance, gs

Hello Bob, It's LOGO Soft Comfort software package you require. V5 is most recent I think. Don't know why it's soft and comfortable though. Merry Christmas/Happy Holiday. (delete as appropriate)

Hi, I work for Knauf Insulation. http://www.knauf.com/ At our plant in Queensferry, North Wales (UK) we manufacture mineral wool insulating materials for domestic use (loft insulation etc) and industrial (building trade) use (cavity wall slabs, roof board etc). The plant runs on Siemens plcs (S7 300 / 400 & WinCC) and mainly ABB drives. Everything is linked by Profi'/MPI The maintenance team consists of Eng. Manager, Electrical Supervisor, Mechanical Supervisor, five Control Technicians, four Fitters and a day Electrician. And loads of contractors. We have just started two apprentices.

Hi, Talking about plc batteries.... On our site we have a blast furnace that melts rocks, the resultant molten flow from the furnace is at about 1300 deg C. The melt is turned into the product we make (insulating materials). The finished product ends up at the packaging end where we have a 'hooder' machine that puts a flexible plastic hood over the palletised products (think of a condom being stretched over a pallet of products). We hood pallets that are to be kept outside exposed to rain. Three weeks ago the control techs' were called to the hooder because of a fault. The machines S7 400 had two red fault lights lit BATF (psu) and EXTF (cpu). The machine was powered up so it was assumed a power dip had caused the plc to lose its prog because the backup battery was low. So the techs' reloaded the program. Unfortunately the latest backup version they had was not quite up to date - since then some of the mpi network addresses had been changed. So they thought they were downloading to the hooder, which used to be, say address 4, but in fact the prog was pumped to a panel, actually now address 4, that controls the water cooloing pumps for the blast furnace and its componenets. They couldn't figure out why the hooder plc was still in fault mode even though the prog appeared to be downloaded. Then an operator called urgently to say that there was a problem with the furnace cooling system (yes, its plc now had the hooder program in it and it didn't like it). A control tech opened the cooling control panel and noticed all the pump contactors were 'out'. This is serious! So he frigged one of the contactors quickly to restart one of the pumps. Water was pumped into the furnace through a hole made by the melt (this hole took just a couple of minutes to appear with no cooling water) and the water was vapourised causing hydrogen to be produced (I think this is the theory). The hydrogen was sucked out of the furnace flue into the flue gas cleaning plant. BANG! All eighteen explosion panels blown out on the cleaning plant. Our whole site was down for three days at very considerable cost (£nnnK?). All because a plc battery was low.

Hi, Hope you are all well. I have a S7 300 cpu, psu and two i/o modules aswell as a mounting rail. All obtained via Ebay. However I require the part to connect the modules together. Can anyone confirm that the correct part number for this is 6ES7 195-7HB00-0XA0? I've no previous experience with S7 300 controllers. Thanks in advance, GS

Hi Ricicle, If your now using just a regular laptop ie. not a PG then a standard RS232 cable won't allow comms. The S7 200 (226) communicates via RS485 so you require the RS232/RS485 converter: 6ES7 901 3CB30 0XA0

Hi slow_learner, Its 2. Your moving the constant (decimal number) 1 to VB0 hence 0000 0001.

Hi, I am writing up some I/O lists. In most of the old lists I've found around here pnuematic cylinders are referred to as rams. I'd prefer to call them what I just did. What do you call them?

Hello Pawel, MAC HMIs were programmed with software called MAC Programmer+. This software is obsolete, you could contact your nearest Mitsi rep' to see it they can help you, but its a long shot I think. If you could get it you could then view/translate the program for E-Designer. Otherwise try asking for MAC Programmer+ on E-bay. Maybe you could get a working used MAC 40 on E-bay. Best regards. E&OE

Hi, Can anybody tell me how to make up a 9W (S7 end) to 25w (E300 end) cable ie which pins connect to each other? I found a drawing in th E-series manual but dont understand it because a); I'm thick and b); more than 9 pins are used at the 25W end. Its probably not even relevent to my application. I have previously made up a lead to connect to an FX 24 (25W to 25W) and FX0 (25W to mini din) and they worked fine but I dont have access to the manual with all the drawings anymore. Any help greatly appreciated.

Thanks IO_Rack, However since posting I've realised that connecting the Bejiers (Mistsubishi) HMI to a Siemens plc is not as 'easy' as connecting it to a Mitsi plc! The HMI RS422 signal needs to be converted to RS485 and vice versa so it looks like I may have to invest in a special lead with some level/protocol conversion bits in it.

Hello, I wish to connect a CPU 226 to an E300. Is a special cable required or will a straight through 9 pin to 25 pin do? I cannot find sufficient information in either the Bejiers or Siemens PDF manuals. Any help appreciated. Thanks in advance. Ok. I've found the pin outs in the E300 manual. I'll make the lead up.

Hi, I need a Siemens PPI lead Pt # 6ES79013CB300XAO. RS sell them for £89+. Farnell have them for £79+ but they dont do debit cards! Maybe a forum reader has a secondhand one they will part with for much less than this? Its for home not work.

Hi Kmd, You have the correct cable 6XV1440-2KH32. Don't know what your error message is - cant see that one in the manual (available from the downloads section of this forum). Can you get into download mode ie. ESC + UP CURSOR when turning panel on or alternatively via System Settings/Opmode/Download ?

File Name: OP717e.pdf File Submitter: gruntstripe File Submitted: 6 Jul 2006 File Category: Manuals, Tutorials Simatic HMI OP7 / OP17 Operator Panel Equipment Manual Click here to download this file

Hello, Can anyone suggest were I can obtain a manual for an Eberle PLS 508? Has anybody experience with this PLC - what software/cables do I require to go online? Thanks in advance.

Hi, From memory I think you go to PRINT then a dialog box asks WHAT? and you select SYMBOL TABLE but clear the ticks for the options to print out LADDER etc.

Hi, Is it fact that a project can only be uploaded to an OP17 but not downloaded from it? I have been told this but having just pulled the manual of Siemens website and had a brief perusal can't see any statements to this effect. I need to backup the programs from 6 OP17s we have in our plant because this has not been undertaken previously and we will experience some serious bother if we 'lose' any of them. We have PRO-TOOL LITE V6.0. Tried to connect to a couple of panels lying around our workshop today but could not establish a comms connection. Using cable 6XV1440-2KH32. Any tips / pointers would be greatly appreciated. Thanks in advance.

Hi, If your still interested: Computer Link: "The FA-1J can easily be linked to a personal computer to make a total control system. A standard program for IBM 5150 and 5160 personal computers is optionally available for printing out programs using a personal computer". Computer link interface unit Pt #: PFA-1U51 You can (could?) use the Program Loader (hand held programming terminal) to write/edit programs and to back them up to audio cassette. Pt # PFA-1H401RE (1K steps) or PFA-1H404RE (4K steps). We have the program loader but not the software or interface unit - didn't know they did that 'till I read the manual today. I hope this is of use to you. I've no idea where you might obtain the above items. E-bay perhaps.

Hi, Found two little beige boxes: First is about 2.5" x 3" and has a 25w parallel port on one side and a 30w IDC type connector on the other. Inside it has a pcb with the Mitsi logo. The second box is about 1.5" sq. with just the IDC connector and has an eeprom inside with a Silver Mitsi sticker on it. Googling returns no results nor does Mitsubishi web site. Thanks in advance.

Hi, I will look in the manual we have and report back tomorrow evening. From memory I think you have to plug a tape recorder into a handheld programming unit to back-up. The programmer has a text display that you can use to write/edit programs. FA-1 programs are/can be stored on a plug-in memory cassette (eeprom). I will get the part numbers but it's all obsolete now.

Hi, We have an FA-1 Junior on site. It's ancient. You have to back-up to an audio tape cassette! (Do they still make audio tape cassettes?)

Hi, Yes, schematics, if only. Drawing those will be my next task! 'YV' sounds sensible. Thanks.

Hi, In the U.K. we call them R.C.D.s - Residual Current Device. They are available in trip currents of 10mA or 30mA. What one often finds over here is that most portable tools in factories and construction sites are supplied via a 240/110v isolating transformer. These were originally intended to protect construction site workers from shocks. 'Unfortunately' they are widely used in factories (maintenance depts.) so we technicians have to lug heavy transformers around whenever we wish to use a drill/grinder etc. I guess RCDs (robust portable ones) have only relatively recently become available. Hopefully the 'legacy' transformers wiil die out.