List Of Dedicated Instructions; Interlock During Dedicated Instruction Is Executed - Mitsubishi Electric MELSEC-QD75MH1 User Manual

14 DEDICATED INSTRUCTIONS

14.1 List of dedicated instructions

Application
Positioning start
Teaching
Writing to flash ROM
Parameter initialization

14.2 Interlock during dedicated instruction is executed

The dedicated instructions explained in this Chapter are listed in Table 14.1.
Table 14.1 List of dedicated instructions
Dedicated
instruction
PSTRT1
PSTRT2
This function starts the positioning control of the designated
axis of the QD75MH.
PSTRT3
PSTRT4
TEACH1
TEACH2
This function carries out teaching the designated axis of the
QD75MH.
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).
The positioning start instruction (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).
The timing of the positioning start dedicated instruction (PSTRT ) is as shown below.
PSTRT instruction ON
Interlock provided by PLC CPU
BUSY (XC to XF)
Positioning completed (X14 to X17)
Outline of functions
ON
OFF
ON
OFF
ON
OFF
OFF
14 - 2
MELSEC-Q
Reference
Section 14.4
Section 14.5
Section 14.6
Section 14.7
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