Performance Data
B3–17
CP 443-5 Basic for PROFIBUS / Manual Part B3 –
Release 11/2002
C79000-G8976-C161-03
5.5
Maximum Number of Connections in Total
In total (FDL , FMS , and S7 connections) a maximum of 59 connections can be
operated
As an example, the following multiprotocol configuration was tested:
28 FMS client connections to S7-400/300 with SCC=RCC=1
+ 1 FMS server connection to S7-400 with SCC=RCC=4
+ 1 FMS server connection to S7-300 with SCC=RCC=1
+ 16 FDL connections to S7-400/300
+ 8 configured S7 connections to S7-400/300
+ 4 unconfigured HMI connections
+ Time-of-day forwarding
+ Diagnostics
Note
If PG or HMI functions are used, a suitable number of S7 connections must be
reserved during configuration!
5.6
Time-of-day Synchronization
The CP 443-5 forwards time-of-day synchronization frames in the following
directions:
1. From the CPU via the CP to PROFIBUS if the local CPU is the time master or
this station is synchronized via a different LAN and the time-of-day
synchronization frame is forwarded via PROFIBUS for the synchronization of
further stations.
2. From PROFIBUS over the CP to the CPU if a remote station is time master, for
example:
– a remote CPU 41x with PROFIBUS interface (for example, CP 443-5)
– a remote PC with CP 5412 / 5613 / 5614
Note
With transmission rates of < 1.5 Mbps, we recommend that you configure a
synchronization interval of at least 10 s.
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