Specifications

Checking operation Using programmable controllers
MELSEC-L Series Quick start guide 2 - 25
2.8 Checking operation
Execute the program written to the CPU module to check the operation.
Check the program operation with the switches and lamps or the monitor function of GX Works2.
2.8.1 Executing the program written to the CPU module
Use the "RESET/STOP/RUN" switch on the front of the CPU module for the operation.
– RUN: Executes the sequence program operation.
– STOP: Stops the sequence program operation.
– RESET: Performs the hardware reset, operation error reset, and operation initialization.
Operating procedure
● Resetting the CPU module
 Tilt the "RESET/STOP/RUN" switch on the front of the CPU module towards "RESET" for over a
second.
 After the "ERR." LED flashes and the "ERR." LED and "MODE" LED turn OFF, release the switch.
 The switch returns to "STOP".
Resetting is completed.
LS90011
Fig. 2-48: Resetting procedure
RESET/STOP/RUN
switch
Hold for over a second



Resetting
Resetting completed
MODE: Green (ON)
RUN: OFF
ERR.: Flashing
MODE: Green (ON)
RUN: OFF
ERR.: OFF