Siemens simatic c7-621 Hardware Installation Manual page 13

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