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Chapter 3 Specifications and Functions
(2) QD77MS4
Signal direction: QD77MS4 PLC CPU Signal direction: PLC CPU QD77MS4
Device No. Signal name Device No. Signal name
X0 QD77 READY Y0 PLC READY
X1 Synchronization flag Y1 All axis servo ON
X2 Y2
X3
Use prohibited
Y3
Use prohibited
X4 Axis 1 Y4 Axis 1
X5 Axis 2 Y5 Axis 2
X6 Axis 3 Y6 Axis 3
X7 Axis 4
M code ON
Y7 Axis 4
Axis stop
X8 Axis 1 Y8 Forward run JOG start
X9 Axis 2 Y9
Axis 1
Reverse run JOG start
XA Axis 3 YA Forward run JOG start
XB Axis 4
Error detection
YB
Axis 2
Reverse run JOG start
XC Axis 1 YC Forward run JOG start
XD Axis 2 YD
Axis 3
Reverse run JOG start
XE Axis 3 YE Forward run JOG start
XF Axis 4
BUSY
YF
Axis 4
Reverse run JOG start
X10 Axis 1 Y10 Axis 1
X11 Axis 2 Y11 Axis 2
X12 Axis 3 Y12 Axis 3
X13 Axis 4
Start complete
Y13 Axis 4
Positioning start
X14 Axis 1 Y14 Axis 1
X15 Axis 2 Y15 Axis 2
X16 Axis 3 Y16 Axis 3
X17 Axis 4
Positioning complete
Y17 Axis 4
Execution prohibition flag
X18 Y18
X19 Y19
X1A Y1A
X1B Y1B
X1C Y1C
X1D Y1D
X1E Y1E
X1F
Use prohibited
Y1F
Use prohibited
Important
[Y2, Y3], [Y18 to Y1F], [X2, X3], and [X18 to X1F] are used by the system, and cannot be
used by the user.
If these devices are used, the operation of the QD77MS4 will not be guaranteed.
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