Characteristics Of S7 Communication; Parallel Use Of Communications Services (Multiprotocol Operation) - Siemens CP 443-5 Extended Manual

5 Performance Data
5.4

Characteristics of S7 Communication

The following data are important for operating S7 connections:
Table 5-4
Characteristic
Number of S7 connections that can be
operated via PROFIBUS
5.5 Parallel Use of Communications Services (Multiprotocol
Operation)
If you use the available communication services at the same time, certain
restrictions result in terms of the communications performance.
To illustrate the relationship between the connection types, the DP mode, and
configured connections, the following values apply to the typical configurations.
Table 5-5
Connection Type
FDL connections
S7 connections
FDL and S7 connections
1) one additional 1 S7 connection can be set up online (for example for routing)
Note
If PG or HMI functions or data record routing are used, a suitable number of S7
connections must be reserved during configuration!
B4-20
Maximum 48
(The value depends on the S7-400 CPU being used.)
Number of Connections
1)
Explanation / Values
With the DP Configuration
32
32
48
48
59
54
CP 443-5 Extended for PROFIBUS / Manual Part B4
No DP
with DP mode
No DP
with DP mode
No DP
with DP mode
Release 6/2005
C79000-G8976-C162-06