Siemens SIMATIC ET 200S Manual page 236

Interface Modules
Time To (output process values)
This value can only be set provided you have enabled the "Synchronize DP slave
with DP cycle" parameter.
The end of the To time is the point at which the output data is switched to the
module terminals in its converted form. The time To includes the following:
• Distribution of the output data via the PROFIBUS-DP bus system to the slaves
(= cyclic data-exchange master slave)
• Distribution of the output data to the modules via the backplane bus of the slave
• Conversion and transfer of the output data to the output terminals of the module
To starts with the arrival of the global control frame. Like Ti, the time can be set in
the specified increments between the minimum and maximum values. Normally,
you should accept the default values.
9-6
ET 200S Distributed I/O System
EWA-4NEB780602402-09