jturner Posted January 22, 2019 Report Share Posted January 22, 2019 hi, let me start by saying i am new to this and trying to learn as i go, but i need help please i have a m91-2-R6-ZK1 controller i am trying to connect to it so i can up load the program to my computor and down load it to an other m91. when i try to upload it starts out with this 1. date, time, <1,9600,E,7,1>1,9600,7,EVEN,1,3,1500> Retransmitting 2. date, time, <1,9600,E,7,1> Switching Com Port 3. date, time, <1,9600,E,7,1> Synchronizing Com Ports then it faults out with can not communicate, give the 3 reasons, cable not connected, time out to short, incorrect communication settings. i have played around with the time out timing did not solve the issue, checked com port everything looks right there, both at 1. using the goldx usb adapter with a dp 9 to rj11 connector rs232 cable. but i just cant seem to figure this out, any help would be greatly appreciated. Quote Link to comment Share on other sites More sharing options...
jturner Posted January 22, 2019 Author Report Share Posted January 22, 2019 please help Quote Link to comment Share on other sites More sharing options...
MVP 2021 Flex727 Posted January 22, 2019 MVP 2021 Report Share Posted January 22, 2019 I normally communicate with 9600, N, 8, 1. Confirm that your M91 Com port setting exactly matches your PCs Com port setting. Confirm you are using the correct Com port on your PC by going into Device Manager. 45 minutes ago, jturner said: checked com port everything looks right there, both at 1 This leads me to believe you aren't understanding Com ports. The port number on your PC and the port number on your PLC are not related. You must use the correct one for each. Quote Link to comment Share on other sites More sharing options...
jturner Posted January 22, 2019 Author Report Share Posted January 22, 2019 yes sir did both set at com 1 made sure com port 1 on pc had same settings as controller baud rate 9600 Parity even Stop Bits 1 Data Bits 7 Flow Control None Quote Link to comment Share on other sites More sharing options...
MVP 2021 Ausman Posted January 22, 2019 MVP 2021 Report Share Posted January 22, 2019 jt, as Flex is implying, it is possible that com port 1 on the PC is not the port you need. Have device manager open in the PC and then plug in just your goldx adapter (not attached to plc) and see what happens in the com ports area. You should get the display refreshed and another port will appear that is the one related to the adapter. cheers, Aus Quote Link to comment Share on other sites More sharing options...
MVP 2021 Ausman Posted January 22, 2019 MVP 2021 Report Share Posted January 22, 2019 Also, seeing your "please help", remember that on this forum all posts are subject to moderator approval. There may be a delay in your request getting to the stage of approval and general visibility....the forum is mostly volunteers not employed by Unitronics so keep this mind. cheers, Aus Quote Link to comment Share on other sites More sharing options...
jturner Posted January 22, 2019 Author Report Share Posted January 22, 2019 sorry newbie here i went into device manager and verified every thing is set to com 1 settings are the same between pc and plc . i even removed the plastic back to insure i was making contact with the connector leads. but everything seems fine with the connections Quote Link to comment Share on other sites More sharing options...
MVP 2021 Ausman Posted January 22, 2019 MVP 2021 Report Share Posted January 22, 2019 But did com 1 only appear when you plugged in your adapter? Quote Link to comment Share on other sites More sharing options...
jturner Posted January 22, 2019 Author Report Share Posted January 22, 2019 yes sir it refreshed and stated com1 as port Quote Link to comment Share on other sites More sharing options...
MVP 2021 Flex727 Posted January 22, 2019 MVP 2021 Report Share Posted January 22, 2019 2 hours ago, jturner said: using the goldx usb adapter Do we know if that USB-to-Serial adapter is compatible with the M91? I have no experience with that adapter. Quote Link to comment Share on other sites More sharing options...
MVP 2021 Ausman Posted January 22, 2019 MVP 2021 Report Share Posted January 22, 2019 OK. In U90, under Controller/M90 OPLC Settings, did you click the Install USB Driver button at the bottom of the screen that opens? Quote Link to comment Share on other sites More sharing options...
jturner Posted January 22, 2019 Author Report Share Posted January 22, 2019 yes sir Quote Link to comment Share on other sites More sharing options...
MVP 2021 Flex727 Posted January 22, 2019 MVP 2021 Report Share Posted January 22, 2019 2 hours ago, jturner said: with a dp 9 to rj11 connector rs232 cable Also, this isn't clear to me, are you using the programming cable supplied by Unitronics? Quote Link to comment Share on other sites More sharing options...
MVP 2021 Ausman Posted January 22, 2019 MVP 2021 Report Share Posted January 22, 2019 I have to go....over to you Flex! cheers, Aus Quote Link to comment Share on other sites More sharing options...
jturner Posted January 22, 2019 Author Report Share Posted January 22, 2019 do not have the cable that came with the unit used the pin layout provided in the connection chart Quote Link to comment Share on other sites More sharing options...
MVP 2021 Flex727 Posted January 22, 2019 MVP 2021 Report Share Posted January 22, 2019 What connection chart? Quote Link to comment Share on other sites More sharing options...
jturner Posted January 22, 2019 Author Report Share Posted January 22, 2019 do not have the cable t RS232 to Unitronics RJ11 PC programming cables PCs are normally not equipped with an RJ11 socket for serial RS232 communications. If we want to connect a PC with an Unitronics PLC, for example for programming or debugging reasons, we need a connection cable which is on one side fitted with a female DB9 connector, and on the other side with an RJ11 jack. The layout for this cable is shown below. Unitronics RJ11 RS232 programming cable DB9 RJ11 Function 2 3 RxD TxD 3 4 TxD RxD 4 6 DTR DSR 5 2 + 5 Signal ground 6 1 DSR DTR hat came with the unit used the pin layout provided in the connection chart Quote Link to comment Share on other sites More sharing options...
MVP 2021 Flex727 Posted January 22, 2019 MVP 2021 Report Share Posted January 22, 2019 And you're definitely using a 6-wire cable? I think it needs to be a crossover cable, not a straight-through cable (not sure about that though). Quote Link to comment Share on other sites More sharing options...
MVP 2021 Joe Tauser Posted January 23, 2019 MVP 2021 Report Share Posted January 23, 2019 Interesting - that is a special OEM controller off an air compressor- https://meiinternational.com/collections/compressor-air-dryer-controllers/unitronics I'm guessing you bought this on eBay or Amazon and can't go back to your supplier for any assistance. 5 hours ago, jturner said: i have a m91-2-R6-ZK1 controller i am trying to connect to it so i can up load the program to my computor You may locked out of uploading, as this is an OEM product. Tell us what driver files the system has assigned to your Gold X USB converter. Hopefully it has the Prolific PL2302 chipset - the FTDI chipset doesn't seem to work too well. @Flex727- the crossover flat cable is needed only if you're using a MJ10-25-cable adapter. If he wired the cable directly then the above connection diagram is correct. Quite frankly the best solution would be to get the Unitronics-approved USB adapter and programming cable. They're not expensive- MJ10-22-CS35 USB adapter RS232-CB1 programming cable What country are you in? Joe T. Quote Link to comment Share on other sites More sharing options...
MVP 2021 Flex727 Posted January 23, 2019 MVP 2021 Report Share Posted January 23, 2019 13 hours ago, Joe Tauser said: @Flex727- the crossover flat cable is needed only if you're using a MJ10-25-cable adapter. If he wired the cable directly then the above connection diagram is correct. 👍 Quote Link to comment Share on other sites More sharing options...
jturner Posted January 23, 2019 Author Report Share Posted January 23, 2019 the controller is from a refrigerated dryer, i did buy a new controller from E bay, but i get the same fault, no matter which controller i connect too. i have called the company that the dryer come from but they are just bleeding me for more and more service calls at 600. dollars a vist and still not working. so i am looking at doing this repair myself, the Gold X USB converter i have has the Prolific PL2302 chip set. i will look into buying the suggested cables just hopping i dont have the same issue as i have now with new cables. i am in the U.S. and i do really appreciate the help all of yall have given me. Quote Link to comment Share on other sites More sharing options...
MVP 2021 Ausman Posted January 23, 2019 MVP 2021 Report Share Posted January 23, 2019 jt, you've said that you've checked the M91's comm settings. How did you do this? Did you use information mode? If not, look at the help file about info mode and then access the comm settings with the plc running to indeed make sure they are what you say. Ensure it is in run mode using info mode, too. If this doesn't work, I think you need to have a good read of the post linked below and perhaps the rest of the topic. And also read the entire topic linked within my post. Perhaps your Gold X doesn't have a real 2302......both topics are lengthy but have good explanations. I would also think about using the program mentioned to completely clean all your usb to serial drivers out and start again but being more careful with drivers. There is likely a very simple explanation here, but it could also be way more complex than you would desire! Some usb converters are a complete PITA, and that is why I only use truly genuine ones from the likes of Shentek etc. Read and learn some useful info anyway. cheers, Aus edited as the original link got you there eventually if you looked around, but was not the correct destination to start with...sorry. Quote Link to comment Share on other sites More sharing options...
Arturo Ferenczi Posted November 30, 2020 Report Share Posted November 30, 2020 Hello, I have exactly the same controller as JT installed in some air dryers from Ingresoll Rand and we are trying to integrate these dryers to with our monitoring system. However I'm experiencing exactly the same communications issues JT had. I just wonder what was the final solution. Thanks for your support and regards, Arturo Ferenczi Quote Link to comment Share on other sites More sharing options...
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