
B-63983EN/02 11.PMC ALARM MESSAGES AND ACTIONS TO TAKE
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Error messages that may be displayed on the PMC NET EDITOR screen
Alarm number Faulty location/corrective action Contents
ILLEGAL FUNCTIONAL
INSTRUCTION NAME
Specify the name of an available
functional instruction.
The entered name of functional instruction
is invalid.
TOO MANY FUNCTION IN ONE
NET
Only one functional instruction is
allowed to constitute a net. If
necessary, divide the net into plural
nets.
Too many functional instructions are in
one net.
TOO LARGE NET Divide the net into plural nets so that
step number in a net may become
small.
Net is too large. When a net is converted
into the object, the net exceeds 256 steps.
NO INPUT FOR OPERATION Coil without input, or coil connected to
output of functional instruction that has
no output, causes this error. If coil is
not necessary, remove it. If necessary,
connect it to meaningful input.
No signal is provided for logical operation.
OPERATION AFTER FUNCTION
IS FORBIDDEN
Output of functional instruction can not
be connected to a contact, nor to
conjunction with other signal that will
be implemented by logical-or
operation.
No logical operation with functional
instruction output is permitted, except
write coils.
WRITE COIL IS EXPECTED Write coil is not found even if it is
expected. Add proper write coil to the
net.
Write coil is expected, but not found.
BAD COIL LOCATION Coil can be located only at rightmost
column. Any coil located at other place
must be erased once, and place
necessary coils in correct place.
Coil is located in bad position.
SHORT CIRCUIT Find contact with terminals connected
by short circuit, and correct
connections.
Some contacts are connected with short
circuit. CTR has a parameter number that
is out of the range.
FUNCTION AFTER
DIVERGENCE IS FORBIDDEN
Functional instruction can not be used
in output section of net. If necessary,
divide the net into plural nets.
Functional instruction is used in output
section of net.
ALL COIL MUST HAVE SAME
INPUT
Left terminals of all coils in a net must
be connected to same input point.
When a net contains more than one coil,
the coils should not have any contact
beside them affects only of the coils.
BAD CONDITION INPUT Check the connection of all condition
inputs of the functional instruction.
Especially for functional instruction that
has more than one condition input,
check if connections to condition
inputs interfere with each other.
Some condition input of functional
instruction is not connected correctly.
NO CONNECTION Find gap that is expected to be
connected, and correct the connection.
There is signal connected to nowhere.
NET IS TOO COMPLICATED Examine every connection, and find
unnecessarily bending connection, or
coils that are connected to different
point.
Net is too complicated to analyze.
PARAMETER IS NOT SUPPLIED Enter all of the relay addresses, and
parameters of functional instructions.
Relay with blank address, or blank
parameter of functional instruction, is
found.