Mitsubishi Electric MELSEC Q Series User Manual page 46

Table1.5 Difference from single CPU system (continued)
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 func-
Clock data used by intelli-
tion
gent function module (QD75,
etc.)
CPU module resetting oper-
ation
Operation for CPU module
Operation
stop error
Multiple CPU system syn-
chronized boot-up
Single CPU system
All modules can be controlled.
Accessible
Accessible
Accessible
Accessible through USB, RS-
*6
232 or Ethernet cables , or via
networks.
Not available
Clock data of the Universal
model QCPU is used.
The entire system is reset by
resetting the Universal model
QCPU.
The system stops.
Not available
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
*6
Ethernet 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
*7
QCPU (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 syn-
chronize the boot-up of CPU modules
in the Multiple CPU system or not. (The
default synchronizes the boot-up of all
CPU modules.)
CHAPTER1 OUTLINE
1
Reference
2
Section 3.4
3
Manuals for
GOT
Section 3.6
4
CC-Link sys-
tem master/
5
local module
manuals
6
Section 2.2
7
Section 3.8.1
8
Section 3.8.2
Section 3.9
Section 3.10
Section 4.5
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