Mitsubishi Electric MELSEC-L LD75P User Manual page 25

(c) Large amount of data
Up to 600 positioning data (combinations of data, such as control system, positioning address, and command
speed) per axis can be set.
(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. (Note that there is a restriction on executing the S-curve acceleration/deceleration for the
system using stepping motors. ( Page 43, Section 1.3))
(5) High maintainability
Maintainability is enhanced in the LD75.
(a) Data retention without battery
Data such as the positioning data and parameters can be stored in the flash ROM inside the LD75. This feature
allows the module to retain the data without a battery.
(b) Module error collection function
Like the QD75, the LD75 stores 16 error logs. Also the LD75 notifies error details to the CPU module when an
error occurs. Storing the error information in the CPU module 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 absolute position restoration instruction, positioning start instruction, and
teaching instruction are provided.
The use of such dedicated instructions simplifies programs.
(7) Setting, monitoring, and testing through GX Works2
Parameters and positioning data for the LD75 can be set using GX Works2.
Moreover, using the test function of GX Works2, users can check the wiring status and the validity of the preset
parameters and positioning data by performing test operation before creating a program for positioning control.
The control monitor function of GX Works2 allows user to debug programs efficiently.
CHAPTER 1 PRODUCT OUTLINE
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