SIL Interface Module (SIM)
Device Status is the top LED on all TeSys island modules except the bus coupler.
Device Status LED
| 
                        
                         Indicator State  | 
                     
                     
                        
                         Summary  | 
                     
                     
                        
                         Description  | 
                     
|---|---|---|
| 
                        
                         Single Flash Green/Red  | 
                     
                     
                        
                         LED Diagnostic  | 
                     
                     
                        
                         Visual indication that LEDs are operational.  | 
                     
| 
                        
                         Steady Off  | 
                     
                     
                        
                         Off  | 
                     
                     
                        
                         Module not energized.  | 
                     
| 
                        
                         Steady Red  | 
                     
                     
                        
                         Device Major Event  | 
                     
                     
                        
                         Internal device event.  | 
                     
| 
                        
                         Flashing Red  | 
                     
                     
                        
                         Not Ready  | 
                     
                     
                        
                         Discovery, addressing, firmware update, Device Minor Event, etc.  | 
                     
| 
                        
                         Steady Green  | 
                     
                     
                        
                         Ready  | 
                     
                     
                        
                         Module is ready.  | 
                     
SIL Status LED
| 
                        
                         Indicator State  | 
                     
                     
                        
                         Description  | 
                     
|---|---|
| 
                        
                         Single Flash Green/Red  | 
                     
                     
                        
                         Visual indication that LEDs are operational.  | 
                     
| 
                        
                         Steady Off  | 
                     
                     
                        
                         Module not energized or not ready.  | 
                     
| 
                        
                         Steady Green  | 
                     
                     
                        
                         No SIL Group Stop command.  | 
                     
| 
                        
                         Flashing Green  | 
                     
                     
                        
                         Successful SIL Group Stop command, not yet in SIL Stop State.  | 
                     
| 
                        
                         Flashing Red  | 
                     
                     
                        
                         Successful SIL Group Stop command, but indicative of a wiring issue. SIL Stop State achieved.  | 
                     
| 
                        
                         Steady Red  | 
                     
                     
                        
                         Successful SIL Group Stop command. SIL Stop State achieved.  |