Control module, main instrument unit
| Control module, main instrument unit | 
| Number of pins | K12 | qty | 12 | 
| K20 | qty | 20 | |
| Power supply (+30 circuit) | Pin No. | 7 (K12) | |
| Power supply (+15 circuit) | Pin No. | 1 and 6 (K12) | |
| Signal ground | Pin No. | 2 and 3 (K12) | |
| I-bus | + | Pin No. | 5 (K12) | 
|  | - | Pin No. | 12 (K12) | 
| P-bus | + | Pin No. | 4 (K12) | 
|  | - | Pin No. | 11 (K12) | 

 
     
		