Siemens SIMATIC NET PROFIBUS - Manual (Page 366)

Infrared Link Modul (ILM) 6ZB530–3AC30–0BA1
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by Siemens
6.3 Operation With Acknowledgment Pulse
For operation of the PROFIBUS ILM with acknowledgment pulses, a manual setting must made during
configuration. Operation with acknowledgment pulse is only intended for the use of point-to-point links between
two PROFIBUS ILMs.
Note
If a point-to-multipoint topology is being used, this mechanism must be deactivated otherwise problems can
occur on the bus.
1 2 3 4 5 6 7 8
4
4
Switch 4:
Link monitoring with acknowledgment pulse
Setting 0
Setting 1
Operation without acknowledgment
pulse
Operation with acknowledgment pulse
As shipped:
All switches 0
Figure 9: Operation with Acknowledgment Pulse and the Corresponding Switch Setting