
3.4.8.2  Digital Inputs (on GENERAL I/O Port) 
The Tuba servo drive is equipped with a 25-pin D-sub plug for digital inputs. When 
assembling an I/O cable for digital input follow the instructions in Section 3.4.4 (Feedback 
and Control Cable Assemblies) using a 25-pin D-sub socket with a metal case. The pins are 
described below. 
Pin   Signal  Function  Pin Position 
1 N.C.  Not Connected 
2  IN10  Programmable input 10 
3  IN9  Programmable input 9 
4  IN8  Programmable input 8 
5  IN7  Programmable input 7 
6 N.C.  Not Connected 
7  IN6  Programmable input 6 
8 N.C.  Not Connected 
9 IN5  Programmable input 5 
10 IN4  Programmable input 4 
11  IN3  Programmable input 3 
12  IN2  Programmable input 2 
13  IN1  Programmable input 1 
14  INRET10  Programmable inputs return 10 
15  INRET9  Programmable inputs return 9 
16  INRET8  Programmable inputs return 8 
17  INRET7  Programmable inputs return 7 
18 N.C.  Not Connected 
19  INRET6  Programmable inputs return 6 
20 N.C.  Not Connected 
21  INRET5  Programmable inputs return 5 
22  INRET4  Programmable inputs return 4 
23  INRET3  Programmable inputs return 3 
24  INRET2  Programmable inputs return2 
25 INRET1  Programmable inputs return 1 
Table  3-11: Digital Inputs (on Committed I/O port) Pin Assignments 
Tuba Installation Guide  Installation 
MAN-TUBIG (Ver. 1.3) 
3-34