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Unread 07-18-2010, 01:37 PM   #131
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Join Date: Jun 2010
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Smile Re: Programming Curtis Controller

Hiya,
I made up a serial level converter to your design Edwin (satfrx) and it worked well on a Curtis 1228 off a mobility scooter, thanks for sharing! The enhanced serial didn't work for me but the standard mode did, probably the different model of controller. Photo attached. I will put a longer cable on the RS232 computer side to make it easier to place the laptop but I guess the TTL level side needs to be short to cut down signal degradation.

I have bought a USB to Serial (FT232RL Breakout) - 5.0 V module from hotsolder.co.uk and I'll report back if I get anywhere with it.

Dan (UK)
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Unread 07-18-2010, 01:45 PM   #132
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Default Re: Programming Curtis Controller

Quote:
Originally Posted by th3joker View Post
Can anyone make one up and send it me I'm willing to pay for it.

I live in the UK.
I'll make you one, if you haven't found one already.
Dan.
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Unread 07-18-2010, 03:33 PM   #133
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Default Re: Programming Curtis Controller

ok I am curious..... has anyone gotten the Curtis software to work with Windows 7? I hate to go out and buy a Netbook just to run this software, but I am tired of using the handheld. I bought the software from Curtis (with all the cables) to be able to reprogram the 1234 controllers found in the EXCAR model, but so far the only machines I can run the software on reliably is the Windows XP latop owned by the daughter of my boss...... you would think a major company like Curtis would keep up with the times for their software.......
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Unread 07-20-2010, 11:11 AM   #134
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Default Re: Programming Curtis Controller

I could not get my win7 X64 laptop to work with curtis software.
Maybe it has something to do with the drivers for the interface cable, but I was unable to connect to my 1234.
Same cable and software works fine with XP.
Maybe my profilic interface needs an other driver. When re-attaching the usb cable it sometimes is not recognized by win7.

Compatibility features of win7 are quite good so I guess that should work.

Regards,

Edwin
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Unread 07-20-2010, 12:13 PM   #135
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Default Re: Programming Curtis Controller

I was told by Curtis that they are working on the problem..... wonder if Windows 10 will be out by the time Curtis gets the software figured out for Windows 7........
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Unread 08-31-2010, 10:18 PM   #136
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Default Re: Programming Curtis Controller

I'm baffled why the 1238 will talk directly to my 232 port on my laptop but others require a circuit to invert or change the levels. RS232 is pretty forgiving of levels.

Also, my settings leave handshaking set to Xon and Xoff.
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Unread 09-01-2010, 01:18 AM   #137
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Default Re: Programming Curtis Controller

Quote:
Originally Posted by majic57 View Post
I'm baffled why the 1238 will talk directly to my 232 port on my laptop but others require a circuit to invert or change the levels. RS232 is pretty forgiving of levels.
Wouldn't have thought that was a good idea seeing as RS232 is +/- 12 volts and the PIC chip in the controller expects 0v to 5v TTL logic levels. I have seen RS232 converted with a few resistors and 5 volt zeners on the cheap but I don't know how reliable it is.
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Unread 09-01-2010, 10:50 AM   #138
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Default Re: Programming Curtis Controller

Hello All,

It have heard more reports on directly connecting RS232 to the controller.
Most comports will not work correctly, some laptops however do work.

RS232 expects and delivers up to +12/-12V the controller indeed used 5V and 0V. It could fry your controller!

The right, and safe way is using a MAX232 circuit. The max 232 however inverts the signal, so the signal has to be inverted again.

(+12V becomes 0V and -12V becomes 5V)

Most comports will accept the +5V, but not the 0V. Siganals as low as +3V and -3V might even work on most comports.

If you are lucky enough to have a laptop that does work directly with the curtis controller, one should at least add 5.1V zeners and resistors maybe abt 100R to prevent overvoltage (higer than 5V) and undervoltage (below 0V)

Again, this only depends on the computer you have if this will work or not.

A true RS232-TTL convertor will always work.

Regards,

Edwin
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Unread 09-01-2010, 11:07 AM   #139
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Default Re: Programming Curtis Controller

Code:
I guess the schematic should look something like this.


   (rx)     ______ 
2--------| 100R  |--------------,------------------  TX
             ---------                 |          
    (tx)   _______               |     
3--------| 100R  |----,---------|------------------ RX
            ----------     |           |
                            ----       ----
                             /\          /\
                      5v1 ''''''       ''''''    5v1
                              |           |
5---------------------------------------------------- GND


Edwin
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Unread 09-15-2010, 06:00 AM   #140
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Default Re: Programming Curtis Controller

After following whole discussion I have try to hook up my controller but without success.
According to Curtis maintenance representative it is similar to 1243C, meaning CAN protocol, offering me 1311MP-3301 hand held programmer. I have learn from 1311 documentation that it is possible to detect protocol and controller.

Previously, connecting PC (1314 from link find here) with Curtis, while auto detecting, I got message that it is not possible to reset USB CAN interface and that auto detecting fail.

For now I have status led blink after every 3 second (HW failure?).

Questions:
- Is it someone connected CAN protocol controller with PC and with what RS232-CAN converter (CAN Bus is hardware similar to RS485)?
- Is it possible to rich the controller with aforementioned 3 second status?
- Is it possible that only I have CAN Bus controller in this thread (bad luck) :)?
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