Siemens Simatic S7-300 CPU 31xC and CPU 31x S7-300 - Manual (Page 138)

Technical data of CPU 31xC
6.6 Technical data of the integrated I/O
CPU 31xC and CPU 31x, Technical data
6-28
Manual, Edition 08/2004, A5E00105475-05
6.6 Technical data of the integrated I/O
6.6.1 Arrangement and usage of integrated I/Os
Introduction
Integrated I/Os of CPUs 31xC can be used for technological functions or as standard I/O.
The figures below illustrate possible usage of I/Os integrated in the CPUs.
Reference
Further information on integrated I/O is found in the Manual Technical Functions.
CPU 312C: Pin-out of the integrated DI/DO (connector X11)
1
2
3
4
5
6
8
7
9
10
11
12
13
14
16
15
17
18
20
19
Standard
X11
DI
DI
DI
DI+0.1
DI+0.2
DI+0.3
DI+0.4
DI+0.5
DI+0.6
DI+0.7
Interrupt
input
X
X
X
X
X
X
X
X
Count
Z0 (A)
Z0 (B)
Z0 (HW gate)
Z1 (A)
Z1 (B)
Z1 (HW gate)
Latch 0
Latch 1
V0
V1
DI+0.0
DI+1.1
DO+0.0
DO+0.1
DO+0.2
DO+0.3
DO+0.4
DO+0.5
DI+1.0
DI
DI
DI
DI
DI
DI
DI X
X
DO
DO
DO
DO
DO
DO
2 M
1L+
1 M
Zn Counter n
A, B Encoder signals
Vn Comparator n
X Pin usable if not assigned to technology functions
HW gate Gate control
Latch
Store counter distance