Communication modules
6.3 GDM memory module CP52M0
SIMATIC TDC hardware
System Manual, 08/2017, A5E01114865-AL
137
GDM memory module CP52M0
6.3.1
Areas of application
GlobalDataMemory
G
lobal
ata
emory (
) facilitates data exchange between all CPU modules in all racks of
the system.
Since central memory supports the synchronous coupling of up to 44 racks, it is possible to
operate up to 836 CPU modules in a maximum system configuration.
A separate rack is used for GDM. The
CP52M0 memory module (slot 1)
and an appropriate
number of CP52IO interface modules (slots 2-12) are accommodated in the UR5213 or
UR6021 racks with 21 slots.
Each rack that is coupled with GDM must be equipped with a CP52A0 access module.
These racks are interconnected with GDM by means of fiber-optic cables in a star topology.
Figure 6-5 Example of a GDM system with 5 racks that are coupled with FOCs
The CP52M0 GDB memory module provides 2 MB of central memory for the
GlobalDataMemory system. This memory module handles the entire data traffic between the
processors in the coupled racks.
Data is exchanged between the GDM interface modules CP52IO and the CP52M0 via the
backplane bus.
CP52M0 reads the fault and diagnostics registers from all fiber-optic interfaces of the
CP52IOs inserted in the GDM rack and detects and evaluates the central operating state of
all fiber-optic interfaces. The results is made available at the digital outputs of CP52M0 for
further analysis.
To Next Page
Loading...
Need help?
General
