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