
Messages that may be displayed during net editing on PMC program
editor screen
Alarm number Faulty location/corrective action Contents
TOO MANY FUNCTIONAL
INSTRUCTIONS 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 out-
put of functional instruction that has no out-
put, causes this error. If coil is not neces-
sary, remove it. If necessary, connect it to
meaningful input.
No signal is provided for logical opera-
tion.
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 Add proper write coil to the net. Write coil is expected, but not found.
BAD COIL LOCATION Coil can be located only at rightmost col-
umn. 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.
FUNCTION AFTER DI-
VERGENCE 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 IN-
PUT
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 be-
side them affects only of the coils.
BAD CONDITION INPUT Check the connection of all condition in-
puts of the functional instruction. Especial-
ly for functional instruction that has more
than one condition input, check if connec-
tions 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 un-
necessarily 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 pa-
rameters of functional instructions.
Relay with blank address, or blank pa-
rameter of functional instruction, is found.
APPENDIX
GFKE-0222-EN
A. ALARM LIST
893