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Chapter 1 Product Outline
(d) Continuous processing of multiple positioning data
Multiple positioning data can be processed continuously within one
positioning operation.
Continuous positioning control can be executed over multiple blocks, where
each block consists of multiple positioning data.
This reduces the number of executions of positioning, management of
execution status, and others.
(e) Acceleration/deceleration processing
Two acceleration/deceleration processing methods are provided:
trapezoidal acceleration/deceleration and S-curve
acceleration/deceleration. The acceleration/deceleration curve can be
selected according to the machine characteristic.
(3) Synchronous control
The synchronous control and electronic cam control can be performed.
(4) Mark detection function
The mark detection to latch any data by the external command signal [DI1 to DI4]
can be performed.
(5) High maintainability
Maintainability is enhanced in the QD77MS.
(a) Data retention without battery
Data such as the positioning data and parameters can be stored in the flash
ROM inside the QD77MS. This feature allows the module retain the data
without a battery.
(b) Module error collection function
The QD77MS notifies error details to the PLC CPU when an error occurs.
Storing the error information in the PLC CPU allows the user to check the
error from the programming tool even after the module is powered off or
reset.
(6) Support of intelligent function module dedicated instructions
Dedicated instructions such as the positioning start instruction (Axis 1 to Axis 4)
and teaching instruction (Axis 1 to Axis 4) are provided.
The use of such dedicated instructions simplifies programs.
The dedicated instructions are fully compatible with the LD77MH/QD75MH.
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