User's Manual

Communication modules
7.3 ASM 452
SIMATIC RF300
System Manual, 06/2008, A5E01642529-02
171
7.3 ASM 452
7.3.1 Features
Area of application
The ASM 452 interface module is a MOBY module for operating MOBY and RF300
components with RS422 over PROFIBUS DP-V1 on
Any computers and PCs
Any PLCs
When operating the interface module on a SIMATIC S7, function blocks are made available
to the user.
Figure 7-6 Interface module ASM 452
The ASM 452 is the result of consistent development of the familiar ASM 450/451 interface
modules. Optimal data throughput can be achieved even in large-scale PROFIBUS
configurations thanks to the use of acyclic data traffic on PROFIBUS DP V1. The minimum
cyclic data load of the ASM 452 on the PROFIBUS provides the user with the guarantee that
other PROFIBUS nodes (e.g. DI/DO) can still be processed at great speed.
The ASM 452 is an interface module for communication between PROFIBUS and the
RF310R with RS422 interface. Through the ASM 452, the data on the RF300 transponder
can be physically addressed ("Normal" addressing). In SIMATIC S7, FC 45 is available for
this purpose.

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