ADDITIONAL PROjEcT DESIGN FOR SyNcHRONOUS cOMMUNIcATION AccORDING PROFINET IO-IRT
The Siemens S7 control provides synchronous alarms for synchronous communication.
The exchange of synchronous, cyclic data is programmed in this alarm modules. The
OB61 is activated for it in the example. This is done by right click to the CPU and se-
lection of ,object characteristics'. Page ,synchronous alarms' is seleted in the opening
window.
Figure 14:
Synchronous alarms
The detail adjustments must be done via the button 'details' of the selected OB.
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