Functions
8.3 Clock synchronization on the I/O bus
ET 200M
Operating Instructions, 12/2008, EWA-4NEB780600602-08
161
8.3 Clock synchronization on the I/O bus
Properties
The interface module IM 153-2 as of 6ES7153-2Bxx1-0XB0 supports the time
synchronization on the I/O bus.
● The IM 153-2 sends the current time to the I/O bus after its time synchronization has
been cleared with the configuration.
● The synchronization on the I/O bus takes place in the synchronization interval that has
been set on the PROFIBUS DP.
● In view of the time received on the PROFIBUS DP, the precision deteriorates only
slightly. The precision of 10 ms is always guaranteed.
Operating steps for activation
The activation of the time synchronization on the I/O bus can be carried out as follows:
PROFIBUS DP:
1. Complete the PROFIBUS DP with a time master.
2. Activate the time synchronization in the properties of the DP master.
Note
In the H system you must insert a time master in both the PROFIBUS DP systems and
activate the time synchronization.
Configuring the IM 153-2:
1. In HW-Config, open the dialog DP slave properties > Time-of-day Synchronization.
2. Activate the Time-of-day Synchronization check box.
3. As a synchronization interval, enter the effective synchronization interval that is set on
PROFIBUS DP (e.g. 10 s).
Figure 8-19 Dialog box DP slave properties > Time-of-day Synchronization
To Next Page
Loading...
