7-4
Changing to DEBUG Mode
This section describes how to place the Safety CPU Unit into DEBUG mode. When you change to DE-
BUG mode, the safety application data is transferred to the Safety CPU Unit.
WARNING
Before you use the Sysmac Studio to change the operating mode of the
Safety CPU Unit to DEBUG Mode, make sure that it is safe to do so at
the destination for the safety application data.
The outputs may operate and may cause serious injury
.
DEBUG Mode Application
DEBUG mode is used to check that the safety communications, the safety programs, and the external
devices operate properly before you operate the Safety CPU Unit
.
When you place the Safety CPU Unit in DEBUG mode, the unvalidated safety programs are automati-
cally transferred from the Sysmac Studio to the main memory of the Safety CPU Unit.
As a safety precaution, the Sysmac Studio allows you to switch the Safety CPU Unit to DEBUG mode
only when the Safety CPU Unit is in PROGRAM mode.
Precautions for Safe Use
Verify that the safety communications with a remote node will be established in the debug mode
of the Safety CPU Unit.
Procedure for Changing to DEBUG Mode
Use the following procedure to switch the operating mode of Safety CPU Unit from the PROGRAM to
DEBUG mode.
When you change the operating mode to the DEBUG mode, the safety programs must be ready for
building.
1 Make sure that the Safety CPU Unit is in the PROGRAM mode.
2 Connect to the Safety CPU Unit online.
3 Select the Safety CPU Unit from the Controller Selection Box in the Multiview Explorer of Sys-
mac Studio and open the Safety CPU Unit Setup and Programming V
iew
.
When you move to the view for Safety CPU Unit, the Sysmac Studio goes online with the Safe-
ty CPU Unit, and the Controller status is displayed in the lower right of the Sysmac Studio Win-
dow, as shown below.
7 Checking Operation and Actual Operation
7 - 17
NX-series Safety Control Unit User's Manual (Z930)
7-4 Changing to DEBUG Mode
7
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