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MELSEC-Q
3 SPECIFICATIONS
(3) Communication trouble area clear request (Y02), communication
trouble area clear end (X02)
(a) The communication trouble area clear request (Y02) is turned on by the
sequence program when all of the communication trouble areas and
extension trouble areas are cleared.
(b) The communication trouble clear end signal (X02) is turned on after all of the
communication trouble area and extension trouble areas are cleared by
turning on the communication trouble area clear request signal (Y02).
(c) The communication trouble area clear request (Y02) is turned off by the
sequence program after it has been confirmed that the communication
trouble area clear end signal (X02) has been turned on.
(e) When the communication trouble area clear request signal (Y02) is turned off
the communication trouble area clear end signal is turned off.
(d) A sequence like the one below is used.
Communication trouble area clear request (Y02)
Communication troublev area clear end (X02)
Clear request
Clear end
(4) Global control request signal (Y04), global control end signal (X04)
(a) The global control end signal (X04) is turned on after service processing has
ended when the global control request signal (Y04) is turned on by the
sequence program.
(b) The global control request signal (Y04) is turned off by the sequence program
after it has been confirmed that the global control service end signal (X04)
has turned on.
(c) When the global control request signal (Y04) is turned off the global control
end signal (X04) turns off.
(d) The global control request signal (Y04) cannot be received if the exchange
starting (X00) is not on. If Y04 is turned on when X00 is off then both X04 and
X05 will turn on.
(e) A sequence like the one below is used.
Global control request
X00
Global control end
TO
Output data write
Exchange start end signal (X00)
Global control request signal (Y04)
Global control end signal (X04)