8 - 1
8
NX-series Safety Control Unit User’s Manual (Z930)
This section describes the procedures to perform before you can operate the Safety
CPU Unit. It describes the operating modes of the Safety CPU Unit, checking operation
in DEBUG mode, and the procedures to perform safety validation.
8-1 Procedures before Operation and Transferring the Required Data . . . . . 8-4
8-1-1 Commissioning Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4
8-1-2 Data That You Must Transfer before Operation and
Data Transfer Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-6
8-2 Transferring the Configuration Information . . . . . . . . . . . . . . . . . . . . . . . . 8-7
8-2-1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-7
8-2-2 Transfer Procedure for a Connection to NJ/NX-series CPU Unit . . . . . . . . . . . 8-8
8-2-3 Transfer Procedure for a Connection to Communications Coupler Unit . . . . . . 8-9
8-3 Operating Modes of the Safety CPU Unit . . . . . . . . . . . . . . . . . . . . . . . . . . 8-11
8-3-1 Startup Operating Mode and Changing the Operating Mode . . . . . . . . . . . . . .8-11
8-3-2 Restrictions in DEBUG Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-14
8-3-3 Operation when Changing Operating Mode . . . . . . . . . . . . . . . . . . . . . . . . . . 8-14
8-3-4 Executable Functions in Each Mode of the Safety CPU Unit . . . . . . . . . . . . . 8-15
8-4 Changing to DEBUG Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-17
8-5 Checking External Device Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-20
8-5-1 Overview of Functions for Checking Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . 8-20
8-5-2 Monitoring a Safety I/O Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-21
8-5-3 Troubleshooting Safety I/O Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-26
8-5-4 Clear All Memory Operation for the Safety I/O Unit . . . . . . . . . . . . . . . . . . . . 8-27
8-6 Functions for Checking Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-29
8-6-1 Overview of Functions for Checking Operation . . . . . . . . . . . . . . . . . . . . . . . 8-29
8-6-2 Starting and Stopping the Safety Programs in DEBUG mode . . . . . . . . . . . . 8-30
8-6-3 Monitoring Variables in the FBD Editor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-31
8-6-4 Monitoring Variables in a Watch Tab Page . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-31
8-6-5 Controlling BOOL Variables, Changing Present Values, and Using Forced
Refreshing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-33
8-7 Node Name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-43
8-8 Security Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-44
8-8-1 Setting the Safety Password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-44
8-8-2 Data Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-45
Checking Operation and Actual
Operation
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