Mitsubishi Electric MELSEC Q Series User Manual page 75

5 SPECIFICATIONS AND FUNCTIONS
5.1.2 Input signals (QD74MH
Device No.
X0 Unit READY
X1 Error detection
X2 Warning detection
X3 Synchronization flag
X10 Axis 1
X11 Axis 2
X12 Axis 3
X13 Axis 4
X14 Axis 5
X15 Axis 6
X16 Axis 7
X17 Axis 8 BUSY
(Note-1)
X18 Axis 9
X19 Axis 10
X1A Axis 11
X1B Axis 12
X1C Axis 13
X1D Axis 14
X1E Axis 15
X1F Axis 16
PLC CPU)
Signal name
ON : READY
OFF : Not READY/
Watch dog
timer error
ON : Error
occurrence
OFF : No error
ON : Warning
occurrence
OFF : No warning
ON : Module access
enabled
OFF : Module access
disabled
ON : BUSY
OFF : Not BUSY
POINT
(Note-1): The BUSY signal turns ON even when position control of movement
amount 0 is executed. However, since the ON time is short, the ON status
may not to be detected in the sequence program.
• When the PLC READY signal [Y0] turns from OFF to ON, the parameter
setting range is checked. If no error is found, this signal turns ON.
• It turns OFF when the PLC READY signal [Y0] turns OFF.
• It turns OFF when the watch dog timer error occurs.
• It is used for interlock in a sequence program, etc.
PLC READY signal [Y0]
Unit READY signal [X0]
• This signal turns ON when the error occurs by any axis of from Axis 1 to 16.
• It turns OFF by error reset of all axes in which the error occurred.
(Confirm the axis error status in "
POINT
Start of positioning, OPR or manual control cannot be executed for the axis in
operation error occurrence. Start after reset errors.
• This signal turns ON when the error occurs by any axis of from Axis 1 to 16.
• It turns OFF by warning release of all axes in which the warning occurred.
(Confirm the axis warning status in "
• Warnings of servo amplifier are automatically released by warning release
on the servo amplifier side also on the QD74MH side. Therefore, warnings
are not released by error reset for an axis.
• When "Asynchronous" is selected in the module synchronization setting of
the CPU module, this signal can be used as interlock for the access from a
sequence program to the QD74MH.
(After the system power supply ON or reset, this signal turns ON if the
access from the PLC CPU to the QD74MH is possible.)
• This signal turns ON at the start of positioning, OPR and manual control.
• It turns OFF at passage of "
completion and manual control completion.
• It turns OFF at error completion or positioning stop.
5 - 2
MELSEC-Q
Details
ON
OFF
ON
OFF
Axis error status".)
Md.100
Axis warning status".)
Md.101
Dwell time" after positioning stops, OPR
Da.8