8/17/2015 11:32 AM | |
Posts: 64 Rating:
|
Dear Aret/Pandiani I have an issue totally related to your discussion about SER using IM153-2 High Feature: I have a CPU414 (not redundant) and I want to use it separately for SER. my desired resolution for SER is 1ms. That means recording the signal changes below 1 ms is not important. Assuming cycle time of CPU set to 20 ms, (regarding 15 buffers inside IM each one containing 20 messages) the possibility of loosing messages seems to be nearly zero. Is it true? How could it happens to lose a message in this condition? sincerely Mazdak ------------------------------------------------------------------------------------------ |
Last edited by: Min_Moderator at: 8/17/2015 3:21:35 PMNew subject after splitting |
|
8/31/2015 1:44 PM | |
Joined: 11/29/2011 Last visit: 8/19/2024 Posts: 1359 Rating:
|
Hi, See this for example: Buffering of Process Messages including Time Stamps with ALARM_7B Also background info about the case in general (maybe pay extra attention to chapter "4.3 Special features of the interface module/Message loss" ): SIMATIC Process Control System PCS 7 High-precision time stamping (V8.1) I hope I could help! |
Last edited by: MicroMan at: 8/31/2015 1:56:38 PM- What you read here, please check with manuals and your requirements. |
|
Follow us on