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31 RUNNING A SAFETY PROGRAM
31.4 Safety CPU Operating Status
31.4 Safety CPU Operating Status
The following is a list of Safety CPU operating statuses.
• RUN state
•STOP state
• PAUSE state
Operation processing based on safety CPU operating status
Operation processing based on the Safety CPU operating status is the same as that of the standard CPU. ( Page 87
Operation Processing by Operating Status)
Safety communications processing based on safety CPU operating status
Safety communications processing based on the Safety CPU operating status is as follows.
*1 If the safety operation mode is TEST MODE, output is based on the output hold and clear settings when the status of network modules
(RJ71GF11-T2) for which safety communication settings are specified is CPU STOP. (Manual for network module used)
*2 Safety communications are not performed if a stop error occurs at the Safety CPU.
Operation processing when operating status of the Safety CPU
changes
This displays operation processing with the safety program when the operating status of the Safety CPU is changed.
*1 Assignment device data for standard/safety shared labels is processed in the same way as operation processing with standard
programs.
*2 Values for safety devices when the Safety CPU operating status changes are cleared or turn off, regardless of the safety operation
mode.
*3 If the safety operation mode is TEST MODE, output is based on the output hold and clear settings when the status of network modules
(RJ71GF11-T2) for which safety communication settings are specified is CPU STOP. ( Manual for network module used)
Operation processing with standard programs is the same as the following.
Page 88 Operation Processing When Operating Status Is Changed
Safety CPU operating status Safety communications processing
RUN state Executes the set safety communications.
STOP state Executes the set safety communications, however, send data is turned off (0).
*1*2
PAUSE state Executes the set safety communications, however, send data is turned off (0).
*1
Safety CPU
Operating
Status
Safety CPU processing
Safety program External output Safety device data
*1
Other than SA\Y SA\Y
STOP RUN Executes safety programs. Outputs the value after safety
program execution.
Retains the safety device data
status immediately before the
RUN status. Clears safety local
devices.
Retains the SA\Y value
immediately before the RUN
status.
RUN STOP Executes up to the END
instruction and then stops.
Turns off all safety
communication outputs.
*3
Retains the device data status
immediately before the STOP
status.
Turns off all SA\Y values.
*2
RUN PAUSE Stops operation after the
execution of one scan.
Turns off all safety
communication outputs.
*3
Retains the device memory
status immediately before the
PAUSE state.
Turns off all SA\Y values.
*2
PAUSE RUN Executes the program from the
start.
Outputs the value after safety
program execution.
Retains the device data status
immediately before the RUN
status. Clears safety local
devices.
*2
Retains the device data status
immediately before the RUN
status.
PAUSE STOP Operation remains stopped. All safety communication
outputs remain off.
*3
Retains the device data status
immediately before the STOP
status.
Retains the SA\Y value
immediately before the STOP
state.
STOP PAUSE Operation remains stopped. All safety communication
outputs remain off.
*3
Retains the device data status
immediately before the PAUSE
state.
Retains the SA\Y value
immediately before the PAUSE
state.
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