How can I change the updating time in the measuring modes with an
Determining the updating time:
- The updating time in synchronous mode with a PROFIBUS DP cycle
( TDP) of TDP < 10ms is n*TDP.
You obtain the factor n via the following formula:
n = 10ms/TDP[ms] + 1
The digits after the decimal point are dropped after
TDP= 6ms and n = 2
results in an updating time of 12ms.
The updating time in synchronous mode with a PROFIBUS DP cycle (
TDP) of TDP>=10ms is
n*TDP with nmin = 1.
- The updating time in synchronous mode is
n*10ms with nmin = 1.
Entering the value determined in the DB:
You must enter the factor n in the DB for FC CNT_CTL1.
The address 22 is parameterized in the WORD format, address 24 has
the value zero.
More information on this module is available in the manual
"SIMATIC FM 350-1 Function Module", section 8.4, in Entry ID: