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MELSEC-Q
3 SPECIFICATIONS
(5) Master Function For Error Set Signal: X03, Master Function For
Error Reset Request: Y13
These signals are used to indicate an error while executing the master function
and to reset the error code.
(a) When an error occurs via the master function, the error information is stored
in the "error information for the master function" area of the buffer memory
and the master function for error set signal (X03) is turned ON.
The master function for error set signal is automatically turned OFF when
the error cause is removed.
(b) After removing the error cause, use the sequence program to turn ON the
master function for error reset request (Y13), and the error code of the
"error-information for the master function" area is cleared.
Read error
information
(FROM instruction)
Master Function For Error
Reset Request (Y13)
Master Function For Error
Set Signal (X03)
FROM/TO
Error code
clear
(6) Slave Down Signal: X04
This signal indicates whether or not a slave node that is being stopped for
communication exists.
(a) This signal is turned ON when at least one slave node is being stopped
among the slave nodes that are set by the parameters.
OFF: Normal communication with all nodes
ON: A communication-error node exists.
The slave node that is being sopped can be checked by referring to the
"each node's communication status" area in the addresses 01BC
H
to
01BF
H
of the buffer memory.
(b) X04 is automatically turned OFF when communication with the slave node
that is being stopped resumes.