DDCSV macro description

JPoepsel

Hi ytliu!

Hope, your trip was successful!
Thank you for your reply! This is, was I expected… So, with this information the DDCSV is ready to become a general purpose controller and the way is open to do a bunch of “special” things, I never thought of when buying it. Thank you again!
One last question (yes, I know, I can measure it by myself, but it is easier for me to ask you than to loosen several screws ;-)): Is the serial IO 3,3V, 5V or 12V?

Regards

Josef

ytliu

Serial port interface uses Max3232 device

JPoepsel

What a pitty - I hoped to be able to connect th microcontroller directly ;-)

JPoepsel

Good morning!

During weekend I figured out how to deal with the serial interface. I got it enabled and could decode the cylic output with my osciloscope as described by ytilu. BUT: The voltage range of TRX is from 0.0V to 1.5V relative to GND, not as expected from -12V to 12V. I don't think, this is normal, is it?

Josef
Josef

71taa

Interesting info, hope to try it soon.

One of examples - periodical sending of current coordinates to external serial device. E.g. to scan heights on reference points, etc.
So If I'd like to send current coordinates of X (just for example, purely for education needs) via current scheme ("signal bits") following information could be helpfull:
1. Are there bitwise operators being supported by the G-code intepreter? AND or XOR for example. I know Fanuc supports them, does DDCSV supports them too?
2. Ability to apply bitwise operator to the contents of the macro variable containing coordinate piece?
3. Bit format of the internal coordinate representation. Though it could be reverse engineered if it's possible to apply bitwise operator to the macro variable ;)
4. Frequency of packet sending
5. Port parameters (baud rate, bit configuration)

If DDCSV have no control on packet sending I'll need to reserve some bits for status indication (e.g. packet ready/finished), so speed parameters are crucial here (as several packets are needed to send a single coordinate piece, and to send all three/four - it's even more time).

ytliu

Hello 71taa

      Currently DDCSV2.1 only supports simple serial protocol, and can not use macro program to control sending and receiving.
       The DM500 Handheld CNC Motion Controller supports the MODBUS communication protocol, and the data transfer can be controlled by a macro program to meet your needs, you can try it.

ytliu

https://www.facebook.com/groups/ ... k/2530082060342283/

JPoepsel

Hi all!

Concerning the default value of the Serial Output when enabled with parameter #108:
The value for #109 in the eng (rus...) file is defined as

#109 -t0 -s1 "M Bus IO default status" -m7 -min=0 -max=4294967295

But it seems, that the t0 type input with integer numbers is only possible for 16 bit unsigned values so that the maximum value, which can be set when using the parameter setting page is 65535.
Changing  to

#109 -t0 -s1 "M Bus IO default status" -m7 -min=0.000 -max=4294967295.000

does not realy help. To conclude: it is not possible to set the default values for the 3ed and 4th byte of the serial stream. Not so important, but may be changed in a future version.

BTW: The 0V..1.5V output peak for TRX was my fault. I exidently got the neighbouring cable and the values there did only exist caused by a cross-talk effekt ;-(

Josef

ytliu

Thank you for the information provided.

Bomb

Hi!
How to recofigure M-code in DDCSV2.1 ?

I wish to change M-code for my own needs.