Siemens SIMATIC S7-1500 Manual page 54

Table 3- 8
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
DI: Digital input; DI/DQ: Bidirectional digital input/output; M: Electronic ground;
1)
M2: Ground reference
B = Bidirectional; I = Input; GND = Reference potential (ground)
2)
Note
An open input is interpreted as "low".
So that the digital inputs will function, connect terminal M1 or M2. The alternatives are as
follows:
• Connect the coupled reference ground of the digital inputs to M1 or M2.
• Connect a jumper to terminal M and terminal M1 (or between M and M2).
This removes the electrical isolation for these digital inputs.
SIMATIC Drive Controller
Equipment Manual, 11/2019, A5E46600370-AA
Digital inputs and digital inputs/outputs of X132
Designation Signal type
1)
DI4 I
DI5 I
DI6 I
DI7 I
DI20 I
DI21 I
M2 GND
M GND
DI/DQ12 B
DI/DQ13 B
M GND
DI/DQ14 B
DI/DQ15 B
M GND
3.4 Digital inputs and outputs of X122, X132 and X142
Notes
2)
Digital input 4
Digital input 5
Digital input 6
Digital input 7
Digital input 20
Digital input 21
Ground for DI4 to DI7, DI20, DI21
(isolated from M)
Ground
Digital input/output 12
(also usable as measurement sensing input)
Digital input/output 13
(also usable as measurement sensing input)
Ground
Digital input/output 14
(also usable as measurement sensing input)
Digital input/output 15
(also usable as measurement sensing input)
Ground
Connecting
53