Reference – Siemens Simatic S7-300 CPU 31xC and CPU 31x S7-300 User Manual
Page 140
Technical data of CPU 31xC
6.6 Technical data of the integrated I/O
CPU 31xC and CPU 31x, Technical data
6-30
Manual, Edition 08/2004, A5E00105475-05
CPU 313C, CPU 313C-2 DP/PtP, CPU 314C-2 DP/PtP: DI/DO (connectors X11 and X12)
1
2
3
4
5
6
8
7
9
10
11
12
13
14
16
15
17
18
20
19
Standard
DI
Posi-
tioning
X11 of CPU 313C-2 PtP/DP
X12 of CPU 314C-2 PtP/DP
21
22
23
24
25
26
28
27
29
30
31
32
33
34
36
35
37
38
40
39
X
X
X
X
X
X
X
X
DI+0.1
DI+0.2
DI+0.3
DI+0.4
DI+0.5
DI+0.6
DI+0.7
X
X
X
X
X
X
X
X
Interrupt
input
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Count
Z0 (A)
Z0 (B)
Z0 (HW gate)
Z1 (A)
Z1(B)
Z1 (HW gate)
Z2 (A)
Z2 (B)
Z2 (HW gate)
Z3 (A)
Z3 (B)
Z3 (HW gate)
Z0 (Latch)
Z1 (Latch)
Z2 (Latch)
Z3 (Latch)
A 0
B 0
N 0
Prob 0
Bero 0
Positioning
Digital
Analog
CONV_EN
R+
Rapid
R-
Creep
Count
V0
V1
V2
V3
Standard
DO
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
DI+0.0
DI+1.1
DI+1.2
DI+1.3
DI+1.4
DI+1.5
DI+1.6
DI+1.7
DI+1.0
DO+0.1
DO+0.2
DO+0.3
DO+0.4
DO+0.5
DO+0.6
DO+0.7
DO+0.0
DO+1.1
DO+1.2
DO+1.3
DO+1.4
DO+1.5
DO+1.6
DO+1.7
DO+1.0
1)
1)
1L+
2L+
2M
3L+
1)
1M
3M
1)
1)
CONV_DIR
1) CPU 314C-2 only
Zn Counter
n
A, B
Encoder signals
HW gate
Gate control
Latch
Store counter distance
Vn Comparator
n
Prob 0
Measuring probe 0
Bero 0
Reference point switch 0
R+, R-
Directional signal
Rapid Rapid
traverse
Creep Creep
speed
CONV_EN Power section enable
CONV_DIR Directional signal (only with control type "voltage 0 to 10 V or current from 0 to 10 mA and directional signal")
X
Pin usable if not assigned to technology functions
Reference
Details are found in the Manual
Technical Functions under Counting, Frequency
Measurement and Pulse Width Modulation