
B-63983EN/02 11.PMC ALARM MESSAGES AND ACTIONS TO TAKE
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Common error messages that may be displayed on individual devices during
the I/O operations
Alarm number Faulty location/corrective action Contents
ERROR OCCURS IN
SEQUENCE PROGRAM
Check the PMC alarm screen and
correct the indicated program error
accordingly.
Data cannot be output because there is an
error in the ladder program.
UNKNOWN DATA TYPE Check the file. The PMC type of the input data is
unknown.
THIS FUNCTION IS NOT
ALLOWED
Check the related settings. There are not all the settings that are
needed to use this function.
PMC PARAMETER IS LOCKED
BY OTHER FUNCTION
Retry after terminating the other
function that is currently using the
PMC parameter.
The PMC parameter is currently used by
some other function and cannot be
referenced by this function.
THIS DEVICE IS USED BY
OTHER FUNCTION
Retry after terminating the other
function that is currently using the
specified device.
The specified device is currently used by
some other function and cannot be used
by this function.
PMC PARAMETER IS
PROTECTED BY OTHER
FUNCTION
Retry after terminating the other
function that is currently using the
PMC parameter.
The PMC parameter is currently used by
some other function and cannot be
changed by this function.
LADDER TYPE UNMATCH Specify a program of a valid type. The specified program is of a different
type and cannot be read.
TOO LARGE SEQUENCE
PROGRAM
Check the file. Or, change to a step
number option that allows you to set a
larger program size.
The ladder program is too large to read.
SEQUENCE PROGRAM IS
USED BY OTHER FUNCTION
Retry after terminating the other
function that is currently displaying the
ladder program.
The ladder program is currently used by
some other function and cannot be
referenced by this function.