SM35 - communication could not be established due to one of the following

[alekspc]

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.

[Joe Tauser]

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.

[Flex727]

I haven't worked with a Samba in a while. Do they not have a USB port?

[alekspc]

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. 

 

[alekspc]

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.

[alekspc]

A little remark, I have COM1 settings of PLC:
115200, 8,n,1.

Does it mean :

8 bit, 

check bit : note

stop bit: 1?

 

 

[alekspc]

OK, I uploaded program succesfully, thanks for your answers.

Problem was in setting additional settings, except baudreate (check bit, stop bit and parity).