PUMA 200 Robotarm and some Hal/INI issues

i do the g00 x0y0z0 a0b0c0.. but correct would be without a0?

Not sure what you mean here. The point is to get all joints moved to their zero position in joint mode (ie 'trivkins') to be able to check if the home pose is correct.
Note that from this pose (the flange pointing straight down) you won't be able to switch directly to world mode (ie 'genserkins') because it is a singularity. See next comment.

homeing : i need on joint 4 or 5 ( joints here not linuxcnc.. i men robot) a 1deg. offset..if i dont have it.. kinematic errors came after homing... like in the example.. but with the puma560 genser simulator.. i can rebuild the existing failures....

You can set a 'HOME' value in your ini file so the joint is moved out of the singular pose before the mode is switched to world.
linuxcnc.org/docs/html/config/ini-homing.html#_home