Siemens SINUMERIK 840Di Manual page 59

06.03
2.3.3 Interface description
Interface overview
Pin assignment: X121 Cable distributor
 Siemens AG, 2003. All rights reserved
SINUMERIK 840Di Manual (HBI) – 06.03 Edition
Table 2-5 Interfaces of the MCI board
Interface description
Cable distributor
MCI board extension
Maximum cable length:
Special features:
Table 2-6 Pin assignment of connector X121
Pin Signal designation
1 M24EXT
2 M24EXT
3 OUTPUT 1
4 OUTPUT 0
5 INPUT 3
6 INPUT 2
7 INPUT 1
8 INPUT 0
9 MEPUS 0
10 MEPUC 0
11 MPG1 XA
12 MPG1 5V
13 MPG1 5V
14 MPG1 XB
15 MPG0 XA
16 MPG0 5V
17 MPG0 5V
18 MPG0 XB
19 Not assigned
2 Hardware Descriptions
2.3 MCI board extension
Connector Connector type
designation
X121 37-pin Sub-D connector
X4 26-pin plug connector
25m for all functions
Four binary inputs (isolated)
Four binary outputs (isolated)
Two measuring inputs (isolated)
Two handwheels (non-isolated)
Signal Pin Signal designation
type
VI 20 P24EXT
VI 21 P24EXT
O 22 OUTPUT 3
O 23 OUTPUT 2
I 24 MEXT
I 25 MEXT
I 26 MEXT
I 27 MEXT
I 28 MEPUS 1
I 29 MEPUC 1
I 30 MPG1 A
VO 31 MPG1 0V
VO 32 MPG1 0V
I 33 MPG1 B
I 34 MPG0 A
VO 35 MPG0 0V
VO 36 MPG0 0V
I 37 MPG0 B
Signal
type
VI
VI
O
O
VI
VI
VI
VI
I
I
I
VO
VO
I
I
VO
VO
I
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