User`s manual

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MELSEC-Q
1 PRODUCT OUTLINE
QD70 PLC CPU
The QD70 and PLC CPU communicate the following data via the base unit.
Direction
Communication
QD70
PLC CPU PLC CPU QD70
Control signal
Signal indication QD70 state.
•
Module READY (X0)
•
Axis error occurrence (X1)
•
Axis warning occurrence (X2)
•
BUSY (X8 to XF)
•
Start complete (X10 to X17)
•
Positioning complete (X18 to X1F)
Signal related to commands.
•
PLC READY (Y0)
•
Positioning start (Y8 to YF)
•
Axis stop (Y10 to Y17)
•
JOG start (Y18 to Y1F)
Data (read/write)
•
Parameter
•
OPR data
•
JOG data
•
Positioning data
•
Control data
•
Monitor data
•
Parameter
•
OPR data
•
JOG data
•
Positioning data
•
Control data
QCPU Peripheral device (GX Configurator-PT)
The QCPU and peripheral device make the following communications. (Refer to
Chapter 6 for details.)
Direction
Communication
QCPU
Peripheral device Peripheral device QCPU
Data –
•
Initial setting
•
Auto refresh setting
Operation monitor
•
Monitor data (QD70 buffer
memory/XY devices)
–
QD70 Drive unit
The QD70 and drive unit communicate the following data via the external device
connection connector.
Direction
Communication
QD70
Drive unit Drive unit QD70
Control signal
Signals related to commands
•
Deviation counter clear signal
(CLEAR)
Signal indicating OP
•
Zero signal (PG0)
Pulse train
•
Pulse train output (PULSE F/
PULSE R)
–
: External 24VDC must be supplied to output the pulse train.
Mechanical system inputs (switches) QD70
The input signals from the mechanical system inputs (switches) are entered into the
QD70 via the external device connection connector.
Mechanical system inputs (switches)
•
Near-point dog signal (DOG)
•
Speed-position switching signal (CHG)