Siemens SIMATIC Manual page 46

The pin–out below shows only the connections relevant for the respective positio-
ning mode. The other connections are found in the Manual, Chapter
CPU 312C Name/Address
connection:
X1
2 DI+0.0
3 DI+0.1
4 DI+0.2
8 DI+0.6
12 2 M
13 1 L+
16 DO+0.2
17 DO+0.3
18 DO+0.4
19 DO+0.5
20 1 M
Pin Name/Address
CPU
313C-2
DP/PtP:
X1
CPU 313C,
314C-2
DP/PtP:
X2
1 1 L+
2 DI+0.0
3 DI+0.1
4 DI+0.2
16 DI+1.4
20 1 M
21 2 L+
24 DO+0.2
25 DO+0.3
26 DO+0.4
27 DO+0.5
30 2 M
4
Sample function
Pulse input
Direction bit
Hardware gate
Latch input
Reference potential of the supply voltage
24 V DC supply voltage
Simulation: Pulse input -> connect to DI+0.0
Simulation: Direction bit -> connect to DI+0.1
Simulation: Hardware gate -> connect to
DI+0.2
Simulation: Latch input -> connect to DI+0.6
Reference potential of the supply voltage
Function
24 V supply voltage for the inputs
Pulse input
Direction bit
Hardware gate
Latch input
Reference potential of the supply voltage
24 V supply voltage for the outputs
Simulation: Pulse input -> connect to DI+0.0
Simulation: Direction bit -> connect to DI+0.1
Simulation: Hardware gate -> connect to
DI+0.2
Simulation: Latch input -> connect to
DI+1.4+1.4
Reference potential of the supply voltage
Automation System S7-300, Getting Started – Counting
Wiring".
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A5E00105536-01