Siemens SIMATIC HMI OP3, Equipment Manual

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12-1
Operator Panel OP3
Edition 11/99
Communication
The OP3 can be connected to SIMATIC S7 automation systems (PLCs) via
two different network configurations. The network configuration depends on
the CPU being used. The following two types of connection are possible:
•
SIMATIC S7-200 Point-to-Point Interface (PPI)
•
SIMATIC S7-300 Multi-Point Interface (MPI)
(without CPU318)
The two different interfaces affect the configuration and the mode of
addressing employed.
The OP3 and the SIMATIC S7 communicate via user data areas in the
automation system. The user data areas you have to create on the S7 depend
on the configuration. You must create suitable user data areas, depending on
the objects contained in the configuration and the data to be exchanged.
For some user data areas, you must create an interface area to handle
synchronization of the OP3 and the S7, if the functions contained therein are
required to be used by the S7. Some user data areas are even located in this
interface area.
For the OP3, the following user data areas are possible:
•
Event message area (refer to section 7.1),
•
Interface area for the connection ID (refer to section 12.3.2), date and
time (refer to section 12.3.3),
•
Screen number area (refer to section 11.3) and
•
System keyboard assignment (refer to section 11.4).
Note
The following is true of the user data areas:
•
The system keyboard assignment and the screen number area may be
created only once.
•
The interface area can be created only once for each CPU.
•
The event message area can be created multiple times on different CPUs.
Types of
connection
User
data areas
12