Siemens SIMATIC S7-1500 Manual page 45

Configuring/address space
4.1 Operating with "Counting and measurement" technology object
Isochronous mode parameters
In isochronous mode, the following parameter can affect the isochronous mode parameters
of the sync domain.
● Filter frequency
● Frame length
● Transmission rate
● Monoflop time
● Parity
Because the isochronous mode parameters are not checked in RUN, overflows can occur if
you change one or more of the indicated parameters in RUN. To prevent overflows, select
the option with the largest time required in the offline parameter assignment.
Additional information
You can find a detailed description of isochronous mode in the following:
● Function manual Isochronous Mode (STEP 7 (TIA Portal) V15.1 or higher) available for
download on the Internet
(https://support.industry.siemens.com/cs/ww/en/view/109755401)
● Function manual PROFINET with STEP 7 available for download on the Internet
(https://support.industry.siemens.com/cs/ww/en/view/49948856)
44
Technology module TM PosInput 2 (6ES7551-1AB00-0AB0)
Manual, 06/2018, A5E03982218-AB