6 control instruction from plc cpu to motion cpu, 2 multiple cpu system – MITSUBISHI ELECTRIC MOTION CONTROLLERS Q172DCPU User Manual

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2 MULTIPLE CPU SYSTEM

2.3.6 Control Instruction from PLC CPU to Motion CPU

Control can be instructed from the PLC CPU to the Motion CPU using the Motion
dedicated PLC instructions listed in the table below.
Refer to the "Q173DCPU/Q172DCPU Motion controller (SV13/SV22) Programming
Manual (Motion SFC)" for the details of each instruction.
(Control may not be instructed from one Motion CPU to another Motion CPU.)

Instruction name

Description

D(P).SFCS

Start request of the Motion SFC program (Program No. may be specified.)

D(P).SVST

Start request of the specified servo program

D(P).CHGA

Current value change request of the specified axis

D(P).CHGV

Speed change request of the specified axis

D(P).CHGT

Torque control value change request of the specified axis

D(P).GINT

Execute request of an event task to the other CPU (Motion CPU)

D(P).DDWR

Write device data of the self CPU (PLC CPU) to the device of other CPU
(Motion CPU)

D(P).DDRD

Read device data of other CPU (Motion CPU) to the device of self CPU
(PLC CPU)

For example, by using the D(P).SFCS instruction of Motion dedicated PLC instruction,
the Motion SFC of the Motion CPU can be started from the PLC CPU.

<Example>

PLC CPU

Motion CPU

Motion SFC

D(P). SFCS instruction

Start request

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