Multiple Cpu Synchronized Boot-Up - Mitsubishi Electric MELSEC Q Series User Manual

14.9

Multiple CPU Synchronized Boot-Up

This function synchronizes the startup of CPU modules No.1 through No.4.
Since start-up of each CPU can be monitored, an interlock program for checking start-up of another CPU before
access is no more required.
Note that, however, the speed of system start-up may slow down because it depends on the slowest CPU module.
● Multiple CPU synchronous startup is not a function to start operations simultaneously among CPU modules after startup.
● The multiple CPU synchronized boot-up is available for the following CPU modules:
• Universal model QCPU (except for Q00UCPU, Q01UCPU, and Q02UCPU)
• Motion CPU (Q172DCPU(-S1), Q173DCPU(-S1), Q172DSCPU and Q173DCPU)
• C Controller module (Q24DHCCPU-V, Q24DHCCPU-VG, Q24DHCCPU-LS, Q26DHCCPU-LS, Q12DCCPU-V
(Basic mode), and Q12DCCPU-V (Extended mode))
(1) Setting
For this setting, use the following functions in Setting/monitoring tools for the C Controller module.
•
Project view  "Parameter"  "CCPU Parameter"  <<Multiple CPU settings>>
 "Multiple CPU Synchronous Startup Setting"
By default, modules No.1 through No.4 are all selected. Deselect them if not to perform multiple CPU
synchronous startup.
Activate the same multiple CPU synchronous startup setting for all CPU modules comprising the multiple CPU
system.
If a multiple CPU system is configured by using any CPU module that does not support multiple CPU synchronous startup,
deselect the checkbox for the pertinent CPU No.
286
Q24DHC-V Q24DHC-VG Q24DHC-LS Q26DHC-LS Q12DC-V