Parameters
2.2 Parameter description
IM151-1 HIGH FEATURE interface module (6ES7151-1BA02-0AB0)
Manual, 03/2008, A5E01075975-02
17
2.2.14
Time Ti (read in process values)
This value can only be set if you have enabled the "Synchronize DP slave to DP cycle"
parameter.
Ti is the time reserved for reading in the input data at the ET 200S. At the beginning of Ti,
the input data is converted at the terminals and stored in a buffer via the backplane bus of
the ET 200S. Ti ends at the beginning of the next equidistant DP cycle i.e., with the global
control frame.
At this point the most recent and up-to-date input data must be available for read in on the
PROFIBUS subnet. The Ti time must consider the processing and delay times in the ET
200S modules and backplane bus and is therefore dependent on the configuration with
regard to modular slaves.
The Ti time can only be set between the minimum and maximum values within the specified
grid. Normally, the default values should be accepted.
2.2.15
Time To (output process values)
This value can only be set if you have enabled the "Synchronize DP slave to DP cycle"
parameter.
This value can only be set provided you have enabled the "Synchronize DP slave with DP
cycle" parameter. 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. As with Ti, the time can be set between
the minimum and maximum values within the specified grid. Normally, you should accept the
default values.
