GE Kalatel Digiplex Protocol sniffed (not to be found!)

[superfranz]

I'm glad to share with you the results of GE Kalatel Digiplex protocol I've sniffed for use with GE Kalatel cyberdome cameras.

not to be found anywhere in internet


sniffed from Old Kalatel Ktd-304 joystick controller.


Port settings:
serial 4800baud 7bitdata 1stop

two wire rs422 (the camera only listens, never talks)
(build TTL to 422 interface with MAX485, for picmicro use. Pay attention to A & B wire, maybe you have to switch A with B).



Commands:

structure : address + command + value

address from 00 to 7F (from 0 to 127, means 128 cameras)


camera hang-up: address + 0x09 + 0x00
(i have to check if really needed)
(sent by controller every time you select another camera)


zoom more: address + 0x28 + 0x3F
zoom less: address + 0x20 + 0x3F
focus near: address + 0x29 + 0x00
focus far: address + 0x21 + 0x00
focus auto: address + 0x1c + 0x00

iris open: address + 0x2A + 0x00
iris close: address + 0x22 + 0x00
iris auto(to check): address + 0x0b + 0x00

pan sx: address + 0x11 + speed (from 0x00 to 0x1f)
pan dx: address + 0x01 + speed (da 0x00 a 0x1f)

tilt up: address + 0x08 + speed (da 0x00 a 0x1f)
tilt down: address + 0x0A + speed (da 0x00 a 0x1f)


PS:
1- in stand-by mode the controller sends 0x00 continuously
2- you have to consider some ms of delay between commands (maybe 20 or more)

nice to share,

bye bye!

SuperFranz!
_________________
SuperFranz