For details on the connection options, see Table 7-28 Connectable conductor cross-sections
(Page 79).
Table 9-8 Pin assignment for X122
Pin Signal name Signal type Meaning
1 DI 0 I Digital input 0
2 DI 1 I Digital input 1
3 DI 2 I Digital input 2
4 DI 3 I Digital input 3
5 DI 16 I Digital input 16
6 DI 17 I Digital input 17
7 G1 GND Ground for DI0 - DI3, DI16, DI17 (isolated with respect to M)
8 M GND Ground
9 DI/DO 8 B Digital input/output 8 (rapid input)
10 DI/DO 9 B Digital input/output 9 (rapid input)
11 M GND Ground
12 DI/DO 10 B Digital input/output 10 (rapid input)
13 DI/DO 11 B Digital input/output 11 (rapid input)
14 M GND Ground
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 80).
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 measuring inputs
depending on the terminal assignment used.
To enable digital inputs 0 to 3 to function, terminal M1 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
isolated).
Note
For a transient (brief) voltage interruption of the 24 V supply, the digital outputs are switched
inactive for this time.
Connectable components
9.1 NX10.3 / NX15.3
NCU 7x0.3B PN
Equipment Manual, 10/2020, 6FC5397-1EP40-6BA1 97
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