Vexta EMP400 Series Operating Manual page 137

Error message
NVRAM checksum error.
There is at least one corrupted
parameter in the controller memory.
Out of memory.
The number of lines in the program
exceeded 1,000. Controller memory
is not available and new data cannot
be entered with the edit command.
Overtime waiting for
The END signal output from the driver
END
was not input to the controller within one
second. The program stops
(decelerates to a stop during pulse
output).
Position counter
Counter overflow. Absolute
overflow.
positioning operation has been
Please clear Position
attempted at a position outside the
counter.
manageable coordinates. The
program stops (decelerates to a stop
during pulse output).
Sequence does not exist.
The program number specified by the
command does not exist.
S-STOP switch active.
An operation command has been
input or an attempt to run the
program was made while the S-STOP
input was on.
Syntax error.
There is a mistake in the entered
command.
TIMING (or SLIT) signal is
TIM input/SLIT input detection error.
not within HOME
Neither TIM input nor SLIT input has
active region.
been detected during mechanical home
seeking. The program stops
(decelerates to a stop during pulse
output).
Too many nested
The number of nested loops
LOOPs.
exceeded the maximum of 4. The
program stops (decelerates to a stop
during pulse output).
Meaning
• Program or ID data of the controller has been
corrupted because power was lost while
writing data into the EEPROM. Delete all
programs and ID data, then reenter the
program.
• Data could not be written correctly due to
EEPROM life. (The number of writes that can
be performed on an EEPROM is limited to
100,000 writes.)
Change the number of program lines to 1,000
lines or less.
• This indicates a possible motor overload.
• If connected to a driver without END output
signal, change the controller setting to "Does
not use END signal."
Control recovers automatically when a sequence
program or operation is restarted.
Reset the counter using one of the following
methods:
• Execute mechanical home seeking.
• Clear the counter (reset counter to 0) with a
RESET command.
• Clear the current position (reset counter to 0)
with a RTNCR command.
Check the program number.
Turn off the S-STOP input.
Enter the correct command.
• Adjust the point where the motor's output shaft
and the load shaft meets or adjust the HOMELS
position so that TIM input and SLIM input turns
on while HOMELS is on.
• If TIM input and SLIT input are not used, change
the controller setting to "Does not use TIM input/
SLIT input."
Control recovers automatically when a program
or operation is restarted.
Change the number of nested loops to four or
less.
10 10 10 10 10
Possible cause and remedial action
Troubleshooting
Reference
EEN command
RESET command
RTNCR command
TIM command
10-5