Siemens Sinumerik 840DiE sl - Page 58

01/2007
2.3 MCI board extension slot variant
2-58
© Siemens AG 2007 All Rights Reserved
SINUMERIK 840Di sl Manual (HBIsl) – 01/2007 Edition
Table 2-6 Pin assignment: Interface X121
Pin FunctionType
1)
Designation
32 M VO
Handwheel PS ground, TTL handwh. ground
33 MPG1_B I
Input 2nd handwheel, track B
34 MPG0_A I
Input 1st handwheel, track A
35 M VO
Handwheel PS ground, TTL handwh. ground
36 M VO
Handwheel PS ground, TTL handwh. ground
37 MPG0_B I
Input 1st handwheel, track B
1) VI/VO Voltage Input/Voltage Output
VI Voltage Input
VO Voltage Input
I Input
O Output
ext. power supply
+24V stabilized
+24V 0V
Optocoupler
MCI board
extension
X121
Pin number:
5...8
M
24...27
Power supply of the digital inputs
Optocoupler
Drivers
20,21
M
3,4,22,23
1,2
Relays
ext. power supply
+24V stabilized
+24V 0V
MCI board
extension
X121
Pin number:
Power supply of the digital outputs
2 Hardware Descri
p
tions