Mitsubishi MELSEC-Q Series User Manual page 52

1
OUTLINE
Item
Access from CPU module to
other modules
Access from GOT
Access with instruction using link
direct
Access range
Access to CC-Link
Access from peripheral devices
Clock data used by CPU modules
No.2 to No.4
Clock function
Clock data used by intelligent
function module (QD75, etc.)
CPU module resetting operation
Operation for CPU module stop
Operation error
Multiple CPU system
synchronized boot-up
1
- 29 1.3 Difference from Single CPU System
Table1.14 Difference from single CPU system (continued)
Single CPU system
All modules can be controlled.
Accessible
Accessible
Accessible
Accessible through USB, RS-232 or
*6
Ethernet cables , or via networks.
----
Clock data of the Universal model
QCPU is used.
The entire system is reset by
resetting the Universal model
QCPU.
The system stops.
----
* 6: Available for Built-in Ethernet port QCPUs only.
* 7: When a Universal model QCPU (except Q02UCPU) or Motion CPU (Q172DCPU or Q173DCPU)
is used as any of CPUs No.2 to No.4, clock data in CPU No.1 can be used.
Multiple CPU system
Setting the relations between the CPU
module and other modules with the PLC
parameter (control CPU) is required.
Accessible to the Universal model QCPU of
the specified CPU No.
Only control CPU is accessible.
Only control CPU is accessible.
Accessible through USB, RS-232 or Ethernet
*6
cables , or via networks.
For access when the Motion CPU, PC CPU
module, or C Controller module is connected,
refer to the manual of each CPU module.
Clock data of the Universal model QCPU
*7
(CPU No.1) is used.
Clock data of the Universal model QCPU
(CPU No. 1) is used.
The entire system is reset by resetting the
Universal model QCPU (CPU No. 1).
(Resetting CPU No. 2 to 4 individually is not
allowed.)
For a stop error of the Universal model QCPU
of CPU No. 1, the multiple CPU system stops.
(CPU modules No. 2 to 4 are in "MULTI CPU
DOWN (Error code: 7000)" status.
For a stop error occurred in any of CPU No. 2
to 4, the operation depends on the parameter
setting of "Operation mode".
It is possible to choose whether to
synchronize the boot-up of CPU modules in
the Multiple CPU system or not. (The default
synchronizes the boot-up of all CPU
modules.)
----: Not available
Reference
Section 3.4
Manuals for GOT
Section 3.6
CC-Link system
master/local
module manuals
Section 2.2
Section 3.8.1
Section 3.8.2
Section 3.9
Section 3.10
Section 4.5