Siemens SINUMERIK ONE NCU 1740 Equipment Manual page 111

For details on the connection options, see Table 8-22 Connectable conductor cross-sections
(Page 88).
Table 12-8 Pin assignment for X122
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Signal type: B = Bidirectional; I = Input; GND = Reference potential (ground)
DI: Digital input; DI/DO: Bidirectional digital input/output; M: Ground M1: Ground reference
Please take the technical data of the digital inputs/outputs from Chapter Technical data
(Page 90).
NOTICE
Ensuring the function of the digital inputs
An open input is interpreted as "low".
The "rapid inputs" can be used for position detection and as inputs of probes depending on the
associated terminal assignment.
To enable digital inputs 0 to 3 to function, terminal G1 must be connected. This can be done as
follows:
• Connect the ground reference of the digital inputs.
• A jumper to terminal M (note that these digital inputs are then no longer electrically
Note
For a transient (brief) voltage interruption of the 24 V supply, the digital outputs are switched
inactive for this time.
NCU 1740
Equipment Manual, 09/2022, A5E51087503B AC
Signal name Signal type
DI 0 I
DI 1 I
DI 2 I
DI 3 I
DI 16 I
DI 17 I
G1 GND
M GND
DI/DO 8 B
DI/DO 9 B
M GND
DI/DO 10 B
DI/DO 11 B
M GND
isolated).
Meaning
Digital input 0
Digital input 1
Digital input 2
Digital input 3
Digital input 16
Digital input 17
Ground for DI0 - DI3, DI16, DI17 (isolated with respect to M)
Ground
Digital input/output 8 (rapid input)
Digital input/output 9 (rapid input)
Ground
Digital input/output 10 (rapid input)
Digital input/output 11 (rapid input)
Ground
Connectable components
12.1 NX10.3/NX15.3
111