Siemens SIMOVERT MASTERDRIVES Manual page 170

Functions
7.1.1.3 Assignment of function blocks to time slots
Time slot table
7-4
To enable function blocks to carry out processing, a time slot (sampling
time) is assigned to each function block. Assignment is effected by
parameterizing in a table.
Some assignments are permanently stored in the firmware and cannot
be changed. The two time slots T0 and T1 are reserved for time-critical
function blocks. It is neither possible to remove function blocks from
these time slots nor to assign further function blocks to these two time
slots.
The time slot table consists of parameters U950 to U953. These
parameters are indexed and have 100 indices each. Each index is
assigned to precisely one function block. This means that the time slot
in which the relevant function block is to be processed can be entered
in the respective index.
The following applies regarding the assignment of the function block
number to the parameter number with parameter index:
Parameter number
U950
U951
U952
U953
Table 7-1 Time slots
Parameter index
001
...
098
099
001
...
098
099
001
...
098
099
001
...
098
099
6SE7087-6QX70 (Version AG)
Compendium Motion Control
05.2006
Assigned function block
1
...
98
99
101
...
198
199
201
...
298
299
301
...
398
399
Siemens AG
SIMOVERT MASTERDRIVES