Changing The Device State - Mitsubishi Electric WS0-CPU0 Operating Manual

116
Table :
Run button and Stop button
Note
ATTENTION
Note
Device states of the MELSEC-WS safety controller
12.1

Changing the device state

Specific state changes in the MELSEC-WS safety controller are carried out manually
in the Setting and Monitoring Tool. These changes in the device state are:
 change from Stop to Run
 change from Run to Stop
In order to change the device state, click on the Stop application or Run application
button next to the representation of the modules in the hardware configuration.
Icon Function
Run
Stop
If the configuration is verified, the MELSEC-WS safety controller will go into the Run
state automatically after the voltage supply has been switched on. If the configuration
is not verified, the system must be set into the Run state manually using the Setting
and Monitoring Tool.
12.2 Behaviour on startup
When the MELSEC-WS safety controller changes from the Stop state to the Run
state:
 The First logic cycle status bit of the CPU module is High for the logic execution
time. This status bit is available as a CPU input element in the logic editor.
 All timers and states including the error states of the function blocks are reset.
12.3 Software reset of the CPU module
It is possible to reset the CPU module via software (i.e. without interrupting the voltage
supply), if the Setting and Monitoring Tool is connected with the CPU module.
How to perform a software reset:
 In the Hardware configuration view, right click on the CPU module in the
Configuration area and select the Software reset command from the context
menu.
 If you are not logged in as Administrator, you will be prompted to log in now.
 A safety message will appear. Click on Yes to reset the CPU module.
Before you reset the CPU module, check whether the system is in a safe state!
If you reset the CPU module, the outputs (e.g. the Enable output) could change their
status. The Software reset command should only be used when the hazardous area
has been checked visually and nobody is in the hazardous area or has access to the
hazardous area while the CPU module is being reset.
If the configuration is verified, the CPU module will change back into the Run state
automatically after the reset. If the configuration is not verified, you will have to start
the CPU module manually using the Setting and Monitoring Tool.
Description
Sets the system into the Run state.
Sets the system into the Stop state.
Chapter 12
280