1-3
C7-621 / C7-621 AS-i Control Systems
C79000-G7076-C621-01
The C7 has two independent units that communicate with each other via an
internal MPI interface:
S C7 CPU with digital and analog inputs and outputs
S C7 OP
Where necessary, these units are dealt with separately in the manuals.
With a two-line display and 20 characters per line with characters 5 mm high
(see Figure 1-2).
The C7-621 AS-i has the following components:
S MPI interface
S AS-interface
S P bus connection (for the IM 621 module)
This model does not have digital inputs/outputs and analog inputs/outputs.
Figure 1-2 C7-621 AS-i
You can do the following with the C7-621 AS-i control system:
S Run user programs that were written in STL, LAD or FBD and
downloaded to the C7 CPU.
S Connect actuators and sensors via the AS-interface to the C7-621 AS-i.
S Download and use operator interface applications that you created with
the “ProTool” or “ProTool/Lite” configuration tool.
S Using these configurations, you can monitor and intervene in the process
you are controlling with the user program.
S Connect further S7-300 modules.
C7-621 Units
C7-621 AS-i
Range of
Functions
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