Mitsubishi MELSEC-Q Series User Manual page 225

6
PARAMETER ADDED FOR MULTIPLE CPU SYSTEM
(3) Multiple CPU parameters check
Item
When the multiple CPU system is powered
on
When CPU No.1 is reset
When CPU in the
RUN mode exist
• When the RUN/
STOP switch has
been changed When CPUs in the
from STOP to RUN mode do not
RUN. exist
• When parameters
are written with
the GX Developer
When a stop error
occurs at CPU No.1
At the time of the multiple CPU system power-on, reset or mode change from STOP
to RUN of CPU No.1, or parameter change, whether the multiple CPU parameters are
the same settings for all CPUs or not is checked as shown in Table 6.3 with items
marked and in the Necessity of same setting column in Tables 6.1 and 6.2
(Consistency check between CPU modules).
(a) When all CPUs are the same
The multiple CPU system will be started up.
(b) When all CPUs are not the same
The operations described in Table6.3 will be performed.
In this event, check the multiple CPU parameters, and set all CPUs with the same
settings.
To start the multiple CPU system, reset CPU No.1 or turn off and on the multiple
CPU system (power ON OFF ON).
(For the action after CPU No.1 reset, refer to Section 3.9.)
Table6.3 List of consistency check between CPUs
No consistency check between CPU
modules for the multiple CPU
parameters will be run.
• A comparison check will be run on the multiple CPU parameters of RUN-
state CPU of the lowest No.
• A "PARAMETER ERROR (error code: 3012/3015)" will occur in the host CPU
if they do not match.
• A comparison check will be run on
the multiple CPU parameters of
stopped CPU No.2.
• A "PARAMETER ERROR (error
code: 3012/3015)" will occur in the
host CPU if they do not match.
* 1: The Universal model QCOU checks consistency of multiple CPU parameters among the CPU
modules
A "PARAMETER ERROR (error code: 3015)" will occur in the host CPU if they do not match.
CPU No.1
• A comparison check will be run on
• A "PARAMETER ERROR (error
*1
• A comparison check will be run on
• A "PARAMETER ERROR (error
STOP to RUN is not allowed as a
"MULTI CPU DOWN (error code:
7000)" error will occur in the host CPU.
----
No consistency check between CPU
modules.
CPU No.1 to 4
the multiple CPU parameters of
CPU No.1.
code: 3012/3015)" will occur in the
host CPU if they do not match.
the multiple CPU parameters of
CPU No.1.
code: 3012/3015)" will occur in the
host CPU if they do not match.
6.1 Parameter list
1
2
3
4
5
6
7
8
6
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