tsmartin_98

Thanks for the replies. From what I gather I should be able to log on even though the processor is faulted. The last time I used the cable and software to log on to another processor it worked fine. That's not to say something may have happened in the mean time. I can't remember if the fault light was flashing or solid. I would assume they have different meanings. Thanks again. TS

I'm sure the answer is already on this forum but I guess I can't put together the right search terms to find it. Anyway ... we have a PLC with a 5/03 processor. There are several modules missing out of the rack. When powered up the processor shows a fault. I kind of expect this because of the missing modules. However when I try to auto-configure with RS Linx to log on I can't. The message tells me to check the cables and some other message I can't remember. The key switch is in the "Rem" position and unfortunately the key is missing.  We would like to repurpose this PLC but need to get past this issue. Any ideas? Thanks in advance. TS 

Thanks TS

I'll try and attach a pic of the circuit I got off the web that I think is what I'm looking for. I'm beginning to think some of the circuitry is handled inside the sensor. Thanks TS

I did a rough search of the forums and didn't see anything close to what I need to do so I thought I'd ask. I am prototyping a machine out of parts salvaged from other decommissioned machines to keep the cost down. With that in mind, buying the "correct" parts isn't really an option at this phase of development. What I have in my parts bins is: 1) An Allen Bradley Micrologix 1000 with 120 volt ac inputs and relay outputs. 2) A Telemechanique VM18PNO 24 volt dc ultrasonic sensor with PNP output, 40mA current consumption, 100mA max switching current. 3) A 24 volt dc relay. 4) A 24 volt dc power supply. I have done some research online and from what I've been able to gather I should be able to use the sensor to operate the relay which in turn would be used to switch 120 volts to the input of the PLC. This is strictly an on/off circuit. Not analog. What gets me is I see resistors and diodes in the circuits and my eyes glaze over. I'm not an electrical engineer so I'm wondering if any of you out there can verify that this will indeed work and put down in plain English how to do it. Thanks in advance. TS

I'm sure this is really simple but my brain is fried tonight. I have a MicroLogix 1000 that I want to use to control 2 pumps in a waste water sump. Using a common level control I need to turn one pump on until the sump is empty at which time it shuts off, of course. Then when the sump fills again I want to turn the other pump on. I basically want to alternate the pumps on each sump fill. Any help would be greatly appreciated. Thanks TS

I realize that it would probably be cheaper to just trash it but out of curiosity has anybody replaced the output relays on one of these things? Or is it even possible? Looking for something to do when I get bored. Thanks TS