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MELSEC-Q
1 PRODUCT OUTLINE
1.1.6 Communicating signals between QD75MH and each module
The outline of the signal communication between the QD75MH (positioning module)
and PLC CPU, peripheral device and servo amplifier, etc., is shown below.
(A peripheral device communicates with the QD75MH via the PLC CPU to which it is
connected)
QD75 READY signal
Forward run JOG start signal
Positioning start signal
BUSY signal
Axis stop signal
Start complete signal
Error detection signal
Servo
amplifer
SSCNET
QD75MH
Y0
Y10,Y11,Y12,Y13
X0
Y8,YA,YC,YE
PLC CPU
Manual puse generator A-phase
Manual pulse
generator
External
signal
Operation monitor
Parameter write/read
JOG operation, inching operation
(Test)
Positioning operation(Test)
Home position return operation
(Test)
Peripheral
device
Peripherral
device
interface
Y9,YB,YD,YF
X14,X15,X16,X17
XC,XD,XE,XF
X10,X11,X12,X13
Y4,Y5,Y6,Y7
X4,X5,X6,X7
X8,X9,XA,XB
Syncronization flag
X1
Execution prohibition flag
Y14,Y15,Y16,Y17
All axis servo ON signal
Y1
Stop signal
Reverse run JOG start signal
Positioning complete signal
M code ON signal
Interface
with
PLC CPU
External
interface
Manual puse generator B-phase
Forced stop input signal
External command signal/
switching signal
Operating information of
the servo amplifer
Positioning command
Control command
Servo parameter
External input signal of
the servo amplifier
PLC READY signal
Data write/read
Positioning data write/read
Block start data write/read
Near-point dog signal
Upper/lower limit signal