Download  Print this page

Communication Between The Plc Cpu And The Motion Cpu In The Multiple Cpu System; Cpu Shared Memory - Mitsubishi Electric MOTION CONTROLLERS Q172DCPU Programming Manual

Melsec q series motion controller.
Hide thumbs

Advertisement

2 MULTIPLE CPU SYSTEM

2.3 Communication between the PLC CPU and the Motion CPU in the Multiple CPU System

2.3.1 CPU shared Memory

(0H)
to
(1FFH)
(200H)
to
(7FFH)
2047
(800H)
2048
to
(FFFH)
4095
(1000H)
4096
to
(270FH)
9999
(2710H)
10000
to
up to
(5F0FH)
24335
(1) Structure of CPU shared memory
The CPU shared memory is memory provided for each CPU module by which
data is written or read between CPU modules of a Multiple CPU system.
The CPU shared memory consists of four areas.
• Self CPU operation information area
• System area
• User setting area
• Multiple CPU high speed transmission area
The CPU shared memory configuration and the availability of the communication
from the self CPU using the CPU shared memory by program are shown below.
CPU shared memory
0
Self CPU operation
to
information area
511
512
to
System area
to
User setting area
to
Unusable
Multiple CPU high speed
transmission area
to
(Variable size in 0 to
14k[points]: 1k words in unit)
REMARK
(Note-1) : Use the MULTW instruction to write to the user setting area of the self
CPU in the Motion CPU.
Use the S. TO instruction to write to the user setting area of the self CPU
in the PLC CPU.
(Note-2) : Use the MULTR instruction to read the shared memory of self CPU and
other CPU in the Motion CPU.
Use the FROM instruction/Multiple CPU area device (U \G ) to read the
shared memory of the Motion CPU from the PLC CPU.
(Note-3) : Refer to Section 2.3.2(1) for the access method of Multiple CPU high
speed transmission area.
Self CPU
Write
(Note-1)
Multiple CPU
(Note-3)
high speed
bus
: Communication allowed
2 - 11
Other CPU
Read
Write
Read
(Note-2)
(Note-2)
(Note-3)
: Communication not allowed
(Note-2)
(Note-2)
(Note-2)
(Note-3)

Advertisement

Table of Contents

   Also See for Mitsubishi Electric MOTION CONTROLLERS Q172DCPU

   Related Manuals for Mitsubishi Electric MOTION CONTROLLERS Q172DCPU

   Related Content for Mitsubishi Electric MOTION CONTROLLERS Q172DCPU

This manual is also suitable for:

Q173dcpu

Comments to this Manuals

Symbols: 0
Latest comments:
  • p Dec 14, 2015 07:47:
    This video describes how to eliminate the 'InS' message on a Mitsubishi Q Series motion controller by ...
  • p Dec 14, 2015 07:32:
    This video describes how to eliminate the 'InS' message on a Mitsubishi Q Series motion controller by