Control module, main instrument unit
| Control module, main instrument unit | 
| Number of pins |  |  | 22 | 
| Power supply (+30 circuit) | Pin No. | 1 | |
| Power supply (+15 circuit) | Pin No. | 2 | |
| Signal ground | Pin No. | 18 | |
| I bus | + | Pin No. | 8 | 
|  | - | Pin No. | 16 | 
| P-bus | + | Pin No. | 17 | 
|  | - | Pin No. | 9 | 

 
     
		