Manual

Appendix A 11-1
11 Appendix A Power Up Actions
At power up, the machine establishes default values for certain commands, but (unless there
is an Autostart sequence) does not apply power to the motors or move them. The defaults
are established as though the IN and
ESC.R commands had been executed, plus the
following:
• The Downloading mode is disabled, as though an ED had been executed.
• The microstep resolution is set to the default value. (See the RE command.)
• The present X-Y position is taken to be (0,0) microsteps (i.e., the Home position).
• The present Z position is taken to be 0.
• Arrow motion is unconstrained. (See the FH and FZ commands.)
• The XY motor switching drivers are on, as though a "PM 0;" had been executed. The
optional Step Verify circuit is disabled. (See personality parameter 50 in Chapter 7.)
Note that motor current turns on automatically, and Step Verify is enabled, as soon as
any XY motion is attempted.
• The power level of the Z motor, if any, is zero.
• The non-volatile memory is checked for internal consistency. (See below.)
• The Autostart sequence, if any, begins executing. (See personality parameter 39 in
Chapter 7.)
The
ESC.!0: command (see Chapter 6) can simulate a true reset or power up in all software
respects.