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MELSEC-Q
3 SPECIFICATIONS
(8) Communication READY signal (X1B)
(a) This is turned on when the station enters the exchange start possible state
after the QJ71PB92D has started up and the module READY signal (X1D)
has turned on. (Only during the normal service mode (MODE O) and
extended service mode (MODE E).)
(b) This turns off when a exchange continuation impossible error occurs.
(c) The exchange start request signal (Y00) is used as an interlock when turned
on by the sequence program.
(9) Module READY signal (X1D)
(a) This is turned on when the QJ71PB92D is started up. regardless of the
operation mode at the time of starting.
(b) This is turned of when the QJ71PB92D goes down.
(10) Watchdog timer error end (X0D)
(a) This turns on when a Watchdog timer error occurs.
(b) The signal will not be turned off until the module is reset or the power of
QJ71PB92D is turned ON.
(11) Communication trouble area type selection (Y03)
(a) This signal is used to select the communication trouble area type (ring type or
fixed type).
ON: Fixed type
OFF: Ring type
(b) This signal becomes valid when the exchange start or communication trouble
area clear request (Y02) is ON.
Communication trouble area
type selection (Y03)
Fixed type
selection
Ring type selection
Initial type
(Becomes valid)
Exchange start or communication
trouble area clear request (Y02) on
(12) Dedicated instruction valid signal (Y0C)
(a) This signal is used when the dedicated instruction for separation prevention is
validated.
ON: Read/Write by dedicated instruction is validated.
OFF: Read/Write by dedicated instruction is invalidated.
(b) Keep the signal turned ON while the dedicated instruction is being used.
(13) Restart request signal (Y0D)
(a) When the QJ71PB92D goes down for some reason (when the FAULT LED
turns on and X1D is off) then turning Y0D from off to on to off again will make
it possible to restart the QJ71PB92D.
(b) The same state will be entered if after start up the power supply is turned off
and then on again.