NOTE
An open input is interpreted as "low".
So that the digital inputs will function, connect terminalM1 or M2. The alternatives are as
follows:
• Connect the coupled reference ground of the digital inputs to M1 or M2.
• Connect a jumper to terminalM and terminalM1 (or between M and M2).
This removes the electrical isolation for these digital inputs.
Pin assignment of X142 interface
Pin Designation
1)
Signal type
2)
Notes
1 – – Reserved
2 – – Reserved
3 DI/DQ0 B Digital input/output 0
4 DI/DQ1 B Digital input/output 1
5 M GND Ground for digital input/output
6 DI/DQ2 B Digital input/output 2
7 DI/DQ3 B Digital input/output 3
8 M GND Ground for digital input/output
9 DI/DQ4 B Digital input/output 4
10 DI/DQ5 B Digital input/output 5
11 M GND Ground for digital input/output
12 DI/DQ6 B Digital input/output 6
13 DI/DQ7 B Digital input/output 7
14 M GND Ground for digital input/output
1)
DI/DQ: Bidirectional digital input/output; M: Electronic ground
2)
B = Bidirectional; GND = Reference potential (ground)
Power supply for X142 digital inputs/outputs
If you use the X142 digital inputs/outputs partly as inputs and partly as outputs (mixed
operation), you need to supply the digital inputs over the same power supply as the SIMATIC
Drive Controller (X124 module supply).
This restriction does not apply if you operate the X142 digital inputs/outputs exclusively as
inputs or as outputs.
The X122/X132 digital inputs/outputs are not affected by this restriction.
51
Connecting
4.4 Digital inputs and outputs of X122, X132 and X142
SIMATIC Drive Controller
Equipment Manual, 11/2022, A5E46600370-AC
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