Mitsubishi MELSEC Q Series User Manual

14
COMMUNICATIONS BETWEEN CPU MODULES
14.3 Data Communications Using CPU Shared Memory
14.3.1 CPU shared memory structure
14 - 10
9
UTILITY OPERATION
10
FUNCTIONS AND PROGRAMMING
11
OVERVIEW OF MULTIPLE CPU SYSTEM
12
MULTIPLE CPU SYSTEM CONFIGURATION
13
MULTIPLE CPU SYSTEM CONCEPT
14
COMMUNICATIONS BETWEEN CPU MODULES
15
PARAMETERS ADDED FOR MULTIPLE CPU
16
PRECAUTIONS FOR USE OF AnS SERIES MODULE
14.3.1 CPU shared memory structure
The following indicates the CPU shared memory structure and accessibility of the C
Controller module.
Figure 14.6 Access diagram
Figure 14.7 Accessibility table
Power supply
Programmable
controller CPU
Motion CPU
C Controller module
(another CPU)
C Controller module
(host CPU)
User program
CPU shared memory
of another CPU
CPU shared memory
of host CPU
2)
CPU shared memory
of another CPU
1)
3)
Programmable
controller CPU
Sequence
program
2)
Program
Host CPU operation
information area
System area
Auto refresh area
User free area
Address
0
H (0H)
200H (60H)
800
H (C0H)
FFF
H (1FFH)
1FF
H (5FH)
7FF
H (BFH)
Access to host CPU 1)
Access to another CPU 2)
Write Write
Enabled
Enabled
Disabled
Disabled
Enabled Disabled Enabled
Disabled Disabled Enabled
Enabled
Disabled
Enabled
Enabled Disabled
Enabled
Disabled Enabled
Disabled Enabled
Disabled
Enabled
Disabled
Enabled
Write
*2
*1, *6
Read
*5
*1
*2
*3
*4
*5
*6
Area name
Access from host CPU
Access to host CPU 3)
Access from another CPU
Use the QBF ToBuf function to write data to the auto refresh area and user free area of the host CPU (C Controller module).
Indicates the address of the CPU shared memory.
Refer to the manual of the corresponding CPU module for how to make access from the programmable controller CPU/Motion CPU of
When CPU No. 1 is the Basic model QCPU, the address of the CPU shared memory is the value within the parentheses.
Use the QBF FromBuf function to read data from the host CPU operation information area, auto refresh area, and user free area of the
host CPU (C Controller module).
Use the QBF FromBuf function to read data from the host CPU operation information area, auto refresh area, and user free area of
another CPU (Programmable controller CPU, Motion CPU).
Read
*3
Read
*4

Mitsubishi MELSEC Q Series Specifications

General

Brand	Mitsubishi
Model	MELSEC Q Series
Category	Controller
Language	English