Difference between revisions of "User:YOPERO"
| Line 48: | Line 48: | ||
P000000// Z axis | P000000// Z axis | ||
| − | |||
p000000// feed rate | p000000// feed rate | ||
| − | |||
s 0000// spindle rpm | s 0000// spindle rpm | ||
| − | |||
00000E5// X axis | 00000E5// X axis | ||
| − | |||
@000000// Y axis | @000000// Y axis | ||
Null modem cable with loop back handshaking does not make any difference when sending regular GCode | Null modem cable with loop back handshaking does not make any difference when sending regular GCode | ||
| + | |||
| + | '''20/09/2014''' | ||
| + | |||
| + | I was able to make the cnc move by sending 7 nibbles(each one with #A) and then gcode although it is not really stable. | ||
| + | |||
| + | eg: | ||
| + | |||
| + | line00: AA AA AA A \CR (hex) 1010 1010 1010 1010 1010 1010 1010 | ||
| + | line01: G00 X05 \CR (ASCII) | ||
| + | |||
| + | line00 needs further investigation as each bit should be enabling something on the uC | ||
| + | |||
| + | must be worth it to read from the eeprom | ||
| + | |||
| + | EEPROM https://drive.google.com/file/d/0BwcYiBsr3w5_TW03QkkwMWp6bGM/edit?usp=sharing | ||
Revision as of 13:13, 20 September 2014
@yopero
Hacking Interfacing the Boxford 190VMC
15/09/2014
Long ago this CNC was controlled by a BBC Master from Acorn.
I just found a disk with the software used to control the Boxford 125 tcl lathe that happens to have a very similar electronic board as the 190VMC. To emulate the BBC master on a Windows7 sytem I have used "BeebEm 414"--->http://www.mkw.me.uk/beebem/ and the disk can be downloaded from here: https://groups.google.com/group/london-hack-space/attach/8f627b29677a61fb/Boxford200K.ssd?part=0.1&authuser=0&view=1
It could be a starting point for decoding the initial handshake to control the drivers. The documentation suggests that it uses standard gcode (ISO)---> http://tturkyilmaz.home.anadolu.edu.tr/dersler/telatturkyilmaz/programlar/cnc/millcamakz/millcam.pdf
Yesterday I was able to connect to the cnc via serial(b:9600 d:8 s:1 p:none) and get its model but could find any code that actually moves the motors.
18/09/2014
DataSheets for the existig electronics
- DS80C310 High-Speed Microcontroller, driving each motor:
https://drive.google.com/file/d/0BwcYiBsr3w5_NWk3LTRhMXI5bUE/edit?usp=sharing
- Lense Speed controllers 530 series Spindle:
https://drive.google.com/file/d/0BwcYiBsr3w5_bzZWSzBPQU5LbjQ/edit?usp=sharing
- GS-D200S 2/2.5A BIPOLAR STEPPER MOTOR DRIVE MODULES
https://drive.google.com/file/d/0BwcYiBsr3w5_Yjh6UWN2NklVMmc/edit?usp=sharing
- microstepping
https://drive.google.com/file/d/0BwcYiBsr3w5_VURPR1Z1cFJlOTA/edit?usp=sharing
http://www.nmbtc.com/step-motors/engineering/full-half-and-microstepping/
- Serial cabling db25 and db9
http://www.lammertbies.nl/comm/cable/RS-232.html https://drive.google.com/file/d/0BwcYiBsr3w5_MlIyRWlRSFA5ejA/edit?usp=sharing http://www.lammertbies.nl/comm/cable/RS-232.html
[[
]]
The cnc sends 5 blocks of 7 chars, the structure as follows:
P000000// Z axis p000000// feed rate s 0000// spindle rpm 00000E5// X axis @000000// Y axis
Null modem cable with loop back handshaking does not make any difference when sending regular GCode
20/09/2014
I was able to make the cnc move by sending 7 nibbles(each one with #A) and then gcode although it is not really stable.
eg:
line00: AA AA AA A \CR (hex) 1010 1010 1010 1010 1010 1010 1010 line01: G00 X05 \CR (ASCII)
line00 needs further investigation as each bit should be enabling something on the uC
must be worth it to read from the eeprom
EEPROM https://drive.google.com/file/d/0BwcYiBsr3w5_TW03QkkwMWp6bGM/edit?usp=sharing