| Type | Appearance | Connected ID
 System  | 
										External
 power supply  | 
										No. of unit
 numbers used  | 
										Current consumption
 (A)  | 
										Model | |||
|---|---|---|---|---|---|---|---|---|---|
| 5 V | 24 V | External | |||||||
| CJ
 Special I/O Unit  | 
										
											![]()  | 
										V680
 Series  | 
										1 Head | - | 1 unit number | 0.26 | 0.13 * | - | CJ1W-V680C11 | 
| 2 Heads | 2 unit number | 0.32 | 0.26 | - | CJ1W-V680C12 | ||||
        