42 
8.  Appendix  Using Safety Function 
 
To use the STO function in EtherCAT communications, you need to configure the settings for 
the EtherCAT master and Safety CPU Unit. 
 
8.1.  Device Configuration 
The following shows an example of hardware components connected to the safety controller. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
8.2.  Workflow 
 
 
8.3 EtherCAT Coupler Unit Settings 
Prepare to set the EtherCAT Coupler Unit. 
8.3.1 Creation of a New Project 
8.3.2 Network Configuration 
Settings 
8.3.4 Safety I/O Function Settings 
8.3.5 Creation of Safety Programs 
8.3.6 Transfer via Connection to the 
Communications Coupler Unit 
Model NX-SL3500 
Model NX-SID800 
Model NX-SOD400 
Model NX-ID3417 
Model NX-OD3256