User`s manual

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) Speed mode
The speed mode of ADT-8840 falls into two categories, namely, self-define mode and set-speed mode. The former
is the default value in the system, while the latter can be set through the function “adt8840a_set_speed_mode()” at
the upper PC.
The self-define mode means the user can set the function and change the motion velocity, SV and acceleration
through the motion parameters. In this mode, the data can be changed at any time and will not be saved in the
system configuration files of ADT-8840. The unit of velocity parameters in this mode can be either pulse or
millimeter. A speed in millimeter is a figure converted on the basis of the equivalent pulses. The default pulse
equivalent of the four axes is 320p/mm.
The set-speed mode means the user can set the speed mode as a fixed value through the function
“adt8840a_set_speed_mode()” after the operation velocity parameters are properly set. The set velocity parameters
will be saved in system configuration files of ADT-8840 and used as correct and fixed data on motion for some
other machining operations. In set-speed mode, the functions for setting the motion parameters will be disabled,
except the G code and the follow-up velocity in the interpolation commands of hardware buffer.
) Buffer mode
In upper PC, the software buffer machining mode or immediate execution mode can be activated through the
function “adt8840a_set_buff_mode()”.
The software buffer machining mode means the user can save the motion commands or IO operation commands in
the buffer of ADT-8840, with which ADT-8840 can also transmit the commands during the motion in a real-time
manner. This mode can ensure the continuity of machining. With 512 commands on machining at maximum, the
buffer works in such a way that the commands in it flows on a first-in-first-out basis. In other words, the executed
commands will be deleted from the buffer, and the remaining space is added by 1 after the deletion. When the user
Ve lo ci t y
Time
Triangle prevention for linear acceleration and deceleration
Acceleration sto
p
s
Number of output pulses
Number of pulses consumed
during acceleration