1/21/2020 4:53 PM | |
Joined: 9/9/2014 Last visit: 7/11/2024 Posts: 246 Rating: (40) |
Hello, see topics below Time synchronization - Time synchronization in the automation environment Library for SNTP Server Functionality in SIMATIC S7 CPUs (LSNTP) Time synchronization between an HMI and a SIMATIC PLC Topics: **************************** See - Overview Time Synchronization Entry ID: 69864408, V1.0, 03/2019 5.2 SIMATIC procedure This procedure is mostly used in process automation together with ISO transport services. The SIMATIC procedure achieves an accuracy of +/- 10ms between the communication processor (CP) and the synchronized CPU at a resolution of +/- 1ms. **************************** In general, when using NTP synchronization, you can get an accuracy of no more - plus / minus 10 ms - everything will depend on the quality of communication, transmission speed and power of your PLC - if PLC are not busy with other processes. Synchronization between controllers is much faster - in the topics above it is said. However, if you want the exact time for your process - look at how this is implemented using - the exact time clock and PCS7... If it is important for you that each new product differs in time - and all time stamps are incremented relative to each other, then in case of an error of 10 ms, it may be easier to round off the time values to hundredths - that is, up to 100 ms |
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