Can anybody help please. I have a "Text Lite" LED moving message display which is now an obsolete model so I can't get spares or accessories from the manufacturer.
According to the user manual a serial port (RS-TTL) is standard on the unit and a cable (3.5mm stereo plug) can be used to connect it to a computer via RS-232C adapter. A search of the internet shows an FS4 RS232C cable
Can anyone please supply wiring diagram for connecting 3.5mm stereo jack plug to 9 pin serial plug to make this lead
I can't click the link.:(
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hm... http://www.arcelect.com/rs232.htm try this and motorola t191 pinout but maybe you need data cable you have only rx,tx and gnd good luck! ;)
I also have an old Text Lite MM500, i bought it realy cheap. It has on Keyboard and no user manual. Im working whit the serial interface but no luck yet. I cant find any english users manual so if you have it in .pdf, could you please send it to me, and maybe i will work out a way to program it!
bump for the pdf please :-)
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The Link is not working. >:(
USER MANUAL ONLY - No tech specs/diagrams.
In German, but you can now use Google translate to convert. It's not perfect, but is better than struggling !
Well Based on the PX1000's Service manual (Computer-ish thing,Made by the same company). Which has a Serial Port rs232 that's a stereo 1/8 jack. +(3-15v)/-(3-15v) in (+5v/-5v) out
Tip is Tx, Ring is Rx, and Sleeve is Gnd (on the host end). So we could assume a straight through cable, would mean that the MM500 is Tip Rx, Ring Tx, sleeve is GND.
And the Data would be
1200 baud (really old is 300 with echo)
7 databits (LSB)
here is that manual
It even has a section in that Manual
Although not originally designed for the purpose, the PX1000 can
be used to program TEXTLITE's Moving Message displays.
Programming is done serially from the PX1000 serial output port,
to the display's serial input. A cable with a connection from the
PX output pin to the display's input pin is all that is required.
To use the PX1000 to program a display, first enter the required
text in to the PX, keeping the following points in mind :
1. Any margin can be used when creating the text, but a margin of
13 should be used when sending the text to the display. This way
the first character sent to the unit is a carriage return, which
is what the display will expect (this changes the display from run
mode to edit mode).
2. The first four characters of the message should be "0"'s, i.e.«
the right-shifted zero on the PX. This is necessary to give a
delay while the display is echoing the carriage return mentioned
in 1 above.
3. All characters typed should be upper-case, as the displays use>
only upper-case, and lower-case codes are used for commands. Also,
only characters used on the displays should be used.
4. To enter a command in the message use the lower case letter
corresponding to the particular command. These letters are listed
in table 5.3.2. The position where the commands are entered in
relation to the text is the same as that described in the Display
operating manual. Note that, otherwise, the actual letters have no
direct bearing to the particular command.
5. Sixteen spaces must be entered at the end of the message.
6. The text must be limited to 2000 characters, as this is the
maximum memory area of the displays.
7. It is not possible to view the message in running mode as it
would run on the display.
8. No carriage return should be inserted in the message. This is
because the carriage return will change the display in to run mode
and all text after the carriage return will be lost. (After the
message has been sent the PX will send a carriage return as it
normally does. This will set the display to run mode.)
When the message is created, connect the PX to the display, and
send at the high speed from the PX, (1200Bd), to program.
The old display series operate at 300Bd with echo. Because of the
echo, it is not possible to program the old series with the PX.
I'm assuming that table 5.3.2 is in that PDF link that doesn't work
Here is the Modern (German Manual) on the English verso of the site
It doesn't have the table, but if you were to use the lower case fist letter of each command it'll probably work. Otherwise there is only 26 possible letters
So if you do your cable right, setup the Connection right the string [x13,x00,x00,x00,x00,"PINOUTS.RU ",x13] should work