5-18
Communications Processor CP 541
EWA 4NEB 812 6188-02
5.3.5
Example for Calculating the Local Cycle Times
An example for calculating the local cycle times is given here for clarifica-
tion.
There are three programmable controllers, each with a CP 541 and intercon-
nected via SINEC L2.
The message traffic between the two failsafe programmable controllers is
safety-related. Four bytes for data security are present per safety-related mes-
sage.
STN 1
S5-115F
with CP 541
STN 2
S5-95F with
CP 541
STN 3
S5-115U
with CP 541
8 bytes
20 bytes
12 bytes
10+4 bytes
20+4 bytes
Figure 5-4 Configuration Example for Calculating the Local Cycle Times
Introduction
Configuration
Example
CP 541 with S5-95F/S5-115F