Siemens simatic c7-621 Hardware Installation Manual page 15

Components that Apart from the connections to the process you can also connect various
Can Be Connected
components to the C7. The most important components and their functions
to a C7
are listed in Table 1-1:
Table 1-1 Components that Can Be Connected to a C7
Component
IM 621 interface module with
cable
Signal module (SM)
(Digital input modules,
digital output modules,
analog input modules,
analog output modules,
analog input/output modules)
S7-300 (CPU)
S7-400 (CPU)
OP (Operator Panel)
PROFIBUS LAN cable with
bus connector
PG cable
C7-621 / C7-621 AS-i Control Systems
C79000-G7076-C621-01
Function
...connects a C7 with an
expansion rack for S7-300
modules
...adapt various process signal
levels to the C7 CPU. Can be
connected to the C7 via an IM
621.
...communicates via the MPI
interface with C7 and with other
nodes on an MPI network.
...communicates via the MPI
interface with C7 and other
nodes on an MPI network.
...allows operator interface
functions.
...interconnects nodes on an
MPI network.
...connects a programming
device/PC with a C7.
Product Overview
Schematic
1-5