Siemens SIMATIC CP 541 Manual page 105

Step
6 Calculate the load caused by the data for
each message.
7 Add up the individual loads.
Communications Processor CP 541
EWA 4NEB 812 6188-02
Action
Parameters of DB1
Implementation
You must add 11 bit times for each trans-
mitted data byte.
Load: 150 11 1650 bit times
Basic load: 4265 bit times
Data: 1650 bit times
Total load: 5915 bit times
The total load in ms is given by:
bit times 1/transmission rate
time
(in ms)
5915 bit times / 500 Kbps 11.8 ms
(in Kbps)
C-17