Mitsubishi Electric MELSEC Q Series User Manual page 76

(2) Setting method
Set the following setting item to "Enable" through Setting/monitoring tools for the C Controller module.
•
"CCPU Parameter"  <<System settings>>  "Restart user CPU"
(3) Methods
There are 3 ways to execute user CPU restarting, which are described in the following pages.
•
By switch operations
Switch operations are described below.
•
Using Setting/monitoring tools for the C Controller module
[Online]  [Remote Operation]
•
Using user program
Restart the user CPU by executing the C Controller module dedicated function (CCPU_Restart
function).
The following shows the function(s) used for restarting user CPU.
Function name
CCPU_Restart
For the remote reset operation, refer to the following.
 Page 163, Section 11.5
(4) How to check user CPU restarting from the other CPUs
To check if the C Controller module is restarting the user CPU, refer to the "LED Status" in the "Host CPU
operation information area" in the CPU shared memory. ( Page 252, Section 14.1.1)
If the "U RDY" LED value in "LED Status" is other than "1: On", the user CPU are preparing for operations and the
user program never runs.
Note6.2
Q24DHCCPU-LS
Not supported by Q24DHCCPU-LS and Q26DHCCPU-LS.
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Note6.2
Note6.2
Restarts the user CPUs on the C Controller module.
Q26DHCCPU-LS
1.
Set the CPU operation status to STOP.
2.
Move the U RST/P1/P2 switch to the U RST position.
Do not release the switch while pulling it down.
3.
Check that the U RDY LED goes off.
During user CPU restarting, the U RDY LED flashes.
4.
Move the U RST/P1/P2 switch back to the "P1" position.
Release the switch then it returns to its center position.
5.
Check that the U RDY LED is lit.
Function