List Of Dedicated Instructions; Interlock During Dedicated Instruction Is Executed - Mitsubishi MELSEC QD75P User Manual

14 DEDICATED INSTRUCTIONS

14.1 List of dedicated instructions

The dedicated instructions explained in this Chapter are listed in Table 14.1.
Application
Absolute position restoration
Positioning start
Teaching
Writing to flash ROM
Parameter initialization

14.2 Interlock during dedicated instruction is executed

The absolute position restoration instruction (ABRST ), positioning start instruction
The timing of the positioning start dedicated instruction (PSTRT ) is as shown below.
Table 14.1 List of dedicated instructions
Dedicated
instruction
ABRST1
ABRST2
This function restores the absolute position of the designated
axis of the QD75.
ABRST3
ABRST4
PSTRT1
PSTRT2
This function starts the positioning control of the designated
axis of the QD75.
PSTRT3
PSTRT4
TEACH1
TEACH2
This function carries out teaching the designated axis of the
QD75.
TEACH3
TEACH4
This function writes the buffer memory parameters,
PFWRT
positioning data and block start data to the flash ROM.
This function initializes the buffer memory and flash ROM
PINIT
setting data to the factory-set data (initial values).
(PSTRT ) and teaching instruction (TEACH ) cannot be executed
simultaneously in each axis. If they are executed at the same time, the second and
later instructions are ignored by an internal interlock (no error will occur).
PSTRT instruction ON
Interlock provided by PLC CPU
BUSY (XC to XF)
Positioning completed (X14 to X17)
14 - 2
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Outline of functions
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OFF
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MELSEC-Q
Reference
Section 14.3
Section 14.4
Section 14.5
Section 14.6
Section 14.7
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