TPS-1 User’s Manual: Hardware Appendix. C Fast Start Up Requirements
R19UH0081ED0107 Rev. 1.07 page 86 of 86
Jul 30, 2018
Fast Start Up Requirements
Prioritized startup refers to the PROFINET function for accelerating the startup of IO devices in a PROFINET IO system with RT and IRT
communication. It shortens the time that the respective configured IO device requires in order to reach the cyclic user data exchange.
The property prioritized startup demanded a startup time less than 500 ms.
If you want to realize this feature be aware that the complete device (TPS-1 and you own Application) must come up to this time requirement.
The function Autonegotiation is disabled and the system operates with a fixed transmission rate. To avoid the usage of crossover cables the Port 2 must
get a crossover of the TX and RX lines
PROFINET IO
Device
PROFINET IO
Device
Port 1
Port 2 Port 1
Port 2
Patch cable
Patch cable Patch cable
Straight
Cross-Over
Straight
Cross-Over
Figure C-1: Line Structure with crossover on board
The reset time of a device is very important for calculating the Start Up time. It is necessary to keep the reset time short.
To Next Page
Loading...