Siemens SIMATIC ET 200SP Manual page 19

Prioritized startup
Prioritized startup describes the PROFINET IO functionality for accelerating the startup of IO
devices in a PROFINET IO system with IRT and RT communication.
The function reduces the time that the appropriately configured IO devices require in order to
return to cyclic user data exchange in the following cases:
● After the supply voltage has returned
● After a station has returned
● After IO devices have been activated
Note
Dependency of the startup time
The interface module permits startup times from 0.5 s.
The startup time depends on the number and type of modules.
You can find more information on this topic in the STEP 7 online help and
● As of STEP 7 V12, in the PROFINET with STEP 7 V13
(http://support.automation.siemens.com/WW/view/en/49948856) function manual.
● As of STEP 7 V5.5, in the system manual PROFINET System Description
(http://support.automation.siemens.com/WW/view/en/19292127).
IM 155-6 PN HF interface module (6ES7155-6AU00-0CN0)
Manual, 03/2015, A5E03915895-AF
Product overview
2.2 Functions
19