Specifications And Functions; Specifications Of Input/Output Signals; List Of Input/Output Signals; Plc Cpu) - Mitsubishi Electric MELSEC Q Series User Manual

5 SPECIFICATIONS AND FUNCTIONS

5. SPECIFICATIONS AND FUNCTIONS
This section describes the input/output signals with PLC CPU and functions.

5.1 Specifications of Input/Output Signals

5.1.1 List of input/output signals

The QD74MH uses 32 input points and 32 output points for exchanging data with the
PLC CPU.
The input/output signals when the QD74MH is mounted in slot No. 0 of the main base
unit are shown below.
Device X refers to the signals input from the QD74MH to the PLC CPU, and device Y
refers to the signals output from the PLC CPU to the QD74MH.
Signal direction: QD74MH
Device No. Signal name
X0 Unit READY
X1 Error detection
X2 Warning detection
X3 Synchronization flag
X4
X5
X6
X7
X8
X9
Unusable
XA
XB
XC
XD
XE
XF
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
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 direction: PLC CPU
Device No.
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
Y8
Y9
YA
YB
YC
YD
YE
YF
Y10
Y11
Y12
Y13
Y14
Y15
Y16
Y17
Y18
Y19
Y1A
Y1B
Y1C
Y1D
Y1E
Y1F
5 - 1
MELSEC-Q
QD74MH
Signal name
PLC READY
All axis servo ON
Forced stop input
Unusable
Axis 1
Axis 2
Axis 3
Axis 4
Axis 5
Axis 6
Axis 7
Axis 8
Positioning start
Axis 9
Axis 10
Axis 11
Axis 12
Axis 13
Axis 14
Axis 15
Axis 16
5