Executable Functions In Each Mode Of The Safety Cpu Unit - Omron NX-SL3300 User Manual

7 Checking Operation and Actual Operation
Before change
DEBUG mode (STOP-
PED)
DEBUG mode (RUN)
RUN mode
DEBUG mode (RUN)
DEBUG mode (STOP-
PED)
Relationship between Establishing Safety Communications and Ex-
ecution of the Safety Programs
The Safety CPU Unit starts execution of the safety programs at the same time the safety process data
communications are established.
The input data that is refreshed from the Safety Input Units is used for processing.
7-3-3

Executable Functions in Each Mode of the Safety CPU Unit

The following table shows the executable functions in each mode of the Safety CPU Unit.
Function
Safety program execution
Controlling BOOL varia-
bles, forced refreshing,
and changing present val-
ues
Message communications
7 - 14
→ After change
→ DEBUG mode (RUN)
→ DEBUG mode (STOP-
PED)
→ PROGRAM mode
→ PROGRAM mode
→ PROGRAM mode
*1
Initializing
Not possi- Not possi-
ble ble
Not possi- Not possi-
ble ble
Possible Possible
•
Safety process data communications continue.
•
The variables are initialized and the safety pro-
grams are executed from the beginning.
•
Safety process data communications continue.
•
The variables are initialized and the safety pro-
grams are stopped.
•
The forced status of variables is cleared.
•
Safety process data communications stop.
The safety input data from the Safety Input
Units is initialized to 0.
The safety output data to the Safety Output
Units is initialized to 0.
•
The variables are initialized and the safety pro-
grams are stopped.
•
The safety programs are deleted from the non-
volatile memory of the Safety CPU Unit.
•
Safety process data communications stop.
The safety input data from the Safety Input
Units is initialized to 0.
The safety output data to the Safety Output
Units is initialized to 0.
•
The variables are initialized and the safety pro-
grams are stopped.
•
The forced status of variables is cleared.
•
Safety process data communications stop.
The safety input data from the Safety Input
Units is initialized to 0.
The safety output data to the Safety Output
Units is initialized to 0.
PRO- DEBUG mode
GRAM
STOPPED
mode
Not possi- Possible
ble
Possible Possible
Possible Possible
NX-series Safety Control Unit User's Manual (Z930)
Operation
RESTORE
RUN mode
RUN
mode
Possible Not possi-
ble
Not possi- Not possi-
ble ble
Possible Possible
*5