Qd74Mh) - Mitsubishi Electric MELSEC Q Series User Manual

5 SPECIFICATIONS AND FUNCTIONS
5.1.3 Output signals (PLC CPU
Device No.
Y0 PLC READY
Y1 All axis servo ON
Y2 Forced stop input
Y10 Axis 1
Y11 Axis 2
Y12 Axis 3
Y13 Axis 4
Y14 Axis 5
Y15 Axis 6
Y16 Axis 7
Y17 Axis 8 Positioning
start
Y18 Axis 9
Y19 Axis 10
Y1A Axis 11
Y1B Axis 12
Y1C Axis 13
Y1D Axis 14
Y1E Axis 15
Y1F Axis 16

QD74MH)

Signal name
ON : PLC READY
ON
OFF : PLC READY
OFF
ON : Servo ON
OFF : Servo OFF
ON : Requested
OFF : Not requested
ON : Requested
OFF : Not requested
(a) This signal notifies the QD74MH that the PLC CPU is normal.
• It is turned ON/OFF with the sequence program.
(b) This signal turns OFF at the change of the basic parameters or OPR
parameters.
(c) The following processes are executed at the PLC READY signal ON.
• The setting range check of the basic parameters, OPR parameters and
system parameters.
• Unit READY signal [X0] ON
(d) The following processes are executed at the PLC READY signal from ON
to OFF.
• Unit READY signal [X0] OFF
• Sudden stop of operating axis.
• The servo ON/OFF is executed for all servo amplifiers connected to the
QD74MH.
([READY ON, Servo ON] / [READY OFF, Servo OFF])
• The forced stop is requested from the PLC CPU to the QD74MH.
• Positioning, OPR and new current change is started.
• The positioning start signal becomes valid at the leading edge, and the
operation is started.
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MELSEC-Q
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