
| Label    | Description    | 
|---|---|
| 1    | Internal interface (ATI) connector    | 
| 2    | Ground nut standoff    | 
| 3    | Locking and ground contact for the adapter    | 
| 4    | LED status display    | 
| 5    | Mounting holes for panel mount    | 
| 6    | Grounding screw    | 
| 7    | Busbar Mounting Slot    | 
| 8    | Locking tab for DIN rail mount    | 
| 9    | Sockets for the terminal connectors    | 

| Indicator    | Condition    | Message   | 
|---|---|---|
| Ready   | Green   | Module is ready to communicate. Operating voltage for internal logic (5 V) is present.   | 
| Off   | Module not ready.   | |
| Upper row IN   1...16   | Green   | Input status (an LED per input); Input point active, ie. input carries a 1 signal (logically ON)   | 
| Off   | Input point inactive, ie. input carries a 0 signal (logically OFF)   | |
| Middle row OUT   1...16   | Green   | Output status (an LED per output); Output point active, ie. output carries a 1 signal (logically ON)   | 
| Off   | Output point inactive, ie. Output carries a 0 signal (logically OFF)   | |
| Lower row ERR   1...16   | Red   | Output overload (an LED per output). Short circuit or overload on the corresponding output.   | 
| Off   | Outputs 1 ... 16 operating normally.   |