Mitsubishi MELSEC-Q Series User Manual page 53

1
OUTLINE
Item
Communication using QCPU
standard area by auto refresh
Communication using multiple
CPU high speed transmission
area by auto refresh
Communication using CPU
Communication
shared memory by a program
between CPU
modules
Communication from Universal
model QCPU to Motion CPU
Communication from the
Universal model QCPU to the PC
CPU module/C Controller module
Communication from the
Universal model QCPU to the
Universal model QCPU
Scan time Factors for increasing scan time
Parameters added for multiple
Parameter
CPU system
Caution AnS/A series-compatible module
Table1.14 Difference from single CPU system (continued)
Single CPU system
----
----
*8
----
----
----
----
Writing data during RUN or
communication processing time
setting, etc.
----
The AnS/A series-compatible modules cannot be used.
* 8: When CPU No.1 is the Q02UCPU, the communication by the auto refresh using the multiple CPU
high speed transmission area is not available.
* 9: When CPU No.1 is the Q02UCPU, the multiple CPU high speed transmission area cannot be set
up.
Multiple CPU system
Transmission from each CPU module is up to
2k words in total of four ranges. The total for
all CPU modules is 8k words.
A memory size that can be used for all CPU
modules is as shown below.
• Using two CPU modules: 14k words
• Using three CPU modules: 13k words
• Using four CPU modules: 12k words
Perform communication with the TO
instruction, FROM instruction, and/or an
instruction using the multiple CPU shared
device (U3En\G ).
Communication is available with the following:
Motion dedicated instruction: 5 types
Multiple CPU high-speed transmission
dedicated instruction: 3 types
Perform communication with the multiple
CPU transmission dedicated instruction: 1
type.
Perform communication with the multiple
CPU high-speed transmission dedicated
instruction: 2 types.
In addition to factors for the single CPU
system, refresh processing for CPU modules
in Multiple CPU system and waiting time may
increase the scan time.
1) No. of CPU modules (Multiple CPU setting)
2) Control CPU (detailed I/O assignment
setting)
3) Out-of-group I/O setting (Multiple CPU
setting)
4) Operation mode for CPU error stop
(Multiple CPU setting)
5) Multiple CPU synchronized boot-up
(Multiple CPU settings)
6) Multiple CPU high speed transmission area
setting (Multiple CPU settings)
7) Communication area setting(refresh
setting)
Some parameters must be set to the same for
all CPU modules while others may be
different for each CPU module.
----: Not available
1.3 Difference from Single CPU System
Reference
Section 4.1.2
Section 4.1.3
Section 4.1.4
Section 4.2,
Section 4.3.1
Section 4.3.2
Section 4.3.3
Section 5.2
Section 6.1
*9
Section 7.1
1
- 30
1
2
3
4
5
6
7
8