Figure 7-3 Example configuration with 2 x IM 650 modules in a redundant system
① WinCC operator station (OS) for plant visualization
② Industrial Ethernet
③ Time-of-day master (SICLOCK)
④ ET 200PA SMART Distributed I/O with 2 x IM 650
⑤ Redundant DP master system
⑥ 2 x AS 410 in a redundant configuration
⑦ Optional: RS 485 repeater
7.5 Time synchronization on the ET 200PA SMART I/O bus
Properties
The IM 650 interface module supports time synchronization on the I/O bus.
● The IM 650 sends the current time to the I/O bus after its time synchronization has been
enabled during parameter assignment.
● The synchronization on the I/O bus takes place in the synchronization interval that is set on
the PROFIBUS DP.
● The accuracy deteriorates negligibly compared to the time received on the PROFIBUS DP.
The accuracy of 10 ms is always guaranteed.
Functions
7.5 Time synchronization on the ET 200PA SMART I/O bus
ET 200PA SMART
80 Operating Instructions, 06/2019, A5E34192013-AB
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