Reset - Mitsubishi Electric MELSEC Q Series User Manual

6.3

Reset

Reset is an operation to apply any parameter and/or user program change and reboot the entire system.
The procedures to reset the C Controller system are described below.
• Power cycle (power OFF  ON)
• Reset the C Controller module (for multiple CPU system, the CPU module No.1)
In any of the following conditions, do not reset the entire system:
• Accessing to the SD memory card
• Accessing to the CompactFlash card
• Accessing to the USB device
• Accessing to the standard ROM or user files in the standard RAM
(1) Status after resetting
Resetting the C Controller module brings the C Controller module into the following status:
• The change(s) in user program(s) is applied.
• The change(s) in parameter setting(s) is applied.
• The data refresh memory
• Initial processing is executed. ( Page 305, Section 17.2.1)
*1 : The data refresh memory cannot be used in Q12DCCPU-V.
(2) Operating procedure
Switch operations for resetting the C Controller module are described below.
(a) Q24DHCCPU-V/-VG/-LS and Q26DHCCPU-LS
*1
and CPU shared memory are cleared to 0.
1.
Move the RESET/SELECT switch to the RESET position.
Do not release the switch while pulling it down.
2.
Check that the MODE LED goes off.
U RDY LED also goes off.
3.
Move the RESET/SELECT switch back to the center.
Release the switch then it returns to its center position.
4.
Check that the MODE LED turns on in green.
During user CPU restarting, the U RDY LED flashes.
When completed, U RDY LED is lit.
CHAPTER 6 HARDWARE OPERATIONS
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