Siemens simatic c7-621 User Manual

1-7
C7-621 / C7-621 AS-i Control Systems
C79000-G7076-C622-01
1.4 C7 Overview
The SIMATIC C7-621/C7-621 AS-i units consist of several components that
interact with each other:
S A CPU of the SIMATIC S7-300 class (C7 CPU)
S A line-oriented SIMATIC OP (C7 OP)
S Integrated digital and analog I/Os (C7-621 I/Os)
S A P bus attachment for expanding the C7-621 with S7-300 modules via
the IM 621
S An MPI interface for communication with the programming device/PC
and other S7-CPUs, C7 control systems and OPs
S An AS-i interface (AS-i) for connecting sensors and actuators (with the
C7-621 AS-i version, see Figure 1-2)
C7-621
C7
I/Os
P bus
MPI
interface
C7 CPU C7 OP
CPU memory
C7 CPU
OP memory
C7 OP
STEP 7
ProTool Lite
or
ProTool
Figure 1-1 Components of the C7-621
The individual components integrated in the SIMATIC C7 control system
correspond to the components that can also be used in modular
configurations consisting of an S7-300 CPU, OP etc. The I/O expansion via
the P bus interface (IM 621) allows the connection of a maximum of 4
SIMATIC S7-300 modules. The AS-i interface allows the connection of
sensors and actuators to the C7-621 AS-i (Figure 1-2).
Introduction

Siemens simatic c7-621 Specifications

General

Brand	Siemens
Model	simatic c7-621
Category	Control Systems
Language	English