Manual

11-2 Appendix A
Non-Volatile Memory Consistency Check
At power up the Automove System checks its non-volatile memory for internal consistency.
If any problems are found the System sends a "?" to the host, puts itself into the Emergency
Stopped state, and sets a status bit that can be tested via the
ESC.O command.
The non-volatile memory can become corrupt under a number of conditions; for example,
turning the power off while downloading or while changing personality parameters; or
unplugging a motor while the power is on and the Write Protect switch is down.
Low-voltage "brownout" power line conditions can also cause this problem even if the Write
Protect switch is up (i.e. "protected").
While the non-volatile memory is corrupt the machine may act erratically and may be unable
to execute any ACL commands. To correct the problem you should enable the Write Protect
switch; then send the
ESC.!6: command to initialize the personality parameters and the
ESC.!7: command to clear the download memory. You may also need to send ESC.!8: to
erase the XY Linearity Correction Table. Then disable the Write Protect switch and turn the
power switch off and back on. If the problem persists your Automove System may need
service.