Characteristics Of S7 Communication - Siemens CP 343-5 Manual

Performance Data
Performance of the FDL Connections
Refer to the following table for transmission rates with FDL connections dependent
on
S frame length (number of bytes)
S the type of CPU
The values were measured while sending frames successively (at a transmission
rate of 1.5 Mbps; bus profile standard; 9 nodes).
Table 4-5 Number of FDL Frames per Second
Frame length
4.4

Characteristics of S7 Communication

The following data are important for operating S7 connections:
Table 4-6
Characteristics:
Number of S7 connections
1) The actual possible number of S7 connections that can be operated depends on the type of CPU being
used.
B2–12
CPU Type /
Transmission rate
8 bytes
128 bytes
240 bytes
CPU 314 /
1.5 Mbps
129 / s
130 / s
122 / s
Explanation / Values
1)
Max.16
CP 343-5 for PROFIBUS / Manual Part B2
C79000-G8976-C160-02
Release 11/2002