Sysmac OMRON NA Series, User Manual

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4 System Program
4 - 2 NA-series Programmable Terminal Hardware User’s Manual (V117)
4-1 System Program and NA Unit Startup
Status
The system program is required to start the NA Unit and execute the project in the NA Unit.
• The system program automatically starts when you turn ON the power supply to the NA Unit or when
you press the reset switch while power is supplied.
When the system program starts, one of the following states is entered.
a) If there is an executable project in the NA Unit, the project is automatically executed.
Refer to 4-3-2 Using the System Menu on page 4-9 for the procedure to display the System
Menu.
b) If there is not an executable project in the NA Unit, the System Menu is automatically displayed.
• If there is an error in the system program, the NA Unit will not operate normally.
If you think there is a problem with the system program, system recovery may be necessary.
Refer to
5-2-1 Confirming NA Unit Operation on page 5-5 and 4-2 System Recovery on page 4-3 for
the method to see whether there is an error in the system program and the system recovery proce-
dure.
Precautions for Correct Use
When you perform system recovery or update the system program, the NA Unit will be returned
to the default status and the project will be deleted.
• You may need to update the system program from time to time, e.g., when support for a new con-
nected device is added to the NA Units. In this case, the system program is automatically down-
loaded from the Sysmac Studio.