alekspc Posted March 7, 2021 Report Share Posted March 7, 2021 I try to use unitronics at first time. I want to try to write test project with 2 timers (TD and TA) to controller. When I downloaded program, I got messege that I need to update OS, from help I got steps how to do it. But I have error when I update program. Before update I had such version of PLC Afte update (that was not finished) I got such error I had many tries with maximum wait for connection. I use cable MJ10-22-CS25 with another use-to-com converter on Noutbook with windows 10. Currently it seems that controller is unworkable. Quote Link to comment Share on other sites More sharing options...
MVP 2023 Joe Tauser Posted March 8, 2021 MVP 2023 Report Share Posted March 8, 2021 Not all USB to RS232 converters work with Unitronics - you need one that uses the Prolific PL2303 chip. Unitronics offers a converter with part number MJ10-22-CS35. What kind of converter do you have? Joe T. Quote Link to comment Share on other sites More sharing options...
MVP 2023 Flex727 Posted March 8, 2021 MVP 2023 Report Share Posted March 8, 2021 I haven't worked with a Samba in a while. Do they not have a USB port? Quote Link to comment Share on other sites More sharing options...
alekspc Posted March 8, 2021 Author Report Share Posted March 8, 2021 I have USB-to-COM cable with ch340 chip. Samba PLC doesn't have any other ports, except that for it's original cable. I want to replace old Jazz PLC JZ20-J-R16-Y with Samba PLC. I also failed even to connect to Jazz to upload program from. I used U90 ladder software. May be problem in my OS Windows 10. Quote Link to comment Share on other sites More sharing options...
alekspc Posted March 8, 2021 Author Report Share Posted March 8, 2021 As for Samba PLC, I succesfully updatet boot loader but afte 10-th tries. And now I can't only update O/S of PLC. PLC use COM port speed 11520 baud/sec, does it's possible to decrease this value with some additional software? I thinks problem could be in this. Quote Link to comment Share on other sites More sharing options...
alekspc Posted March 8, 2021 Author Report Share Posted March 8, 2021 A little remark, I have COM1 settings of PLC: 115200, 8,n,1. Does it mean : 8 bit, check bit : note stop bit: 1? Quote Link to comment Share on other sites More sharing options...
alekspc Posted March 8, 2021 Author Report Share Posted March 8, 2021 OK, I uploaded program succesfully, thanks for your answers. Problem was in setting additional settings, except baudreate (check bit, stop bit and parity). Quote Link to comment Share on other sites More sharing options...
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