Overview and definition of terms
1.2 Areas in the plant
Fail-safe operation of the Mobile Panel 277F IWLAN
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Function Manual, 08/2008, 6AV6691-1FQ01-2AB0
Note
In addition to the effective ranges you can define zones in your project. The zones are not
relevant for fail-safe operation. They are used merely to control the project depending on the
location of the operator. For example a picture change can be configured for zone entry or
zone exit.
Zones and effective range are independent of each other.
Additional information on zones is provided in the Operating instructions for the HMI device.
Distance measurement between HMI device and transponder
The transmitting range of the transponder and the receiving range of the HMI device have
the approximate shape of a lobe with a range of approximately 8 m.
The detailed representation of the radiation characteristics of HMI device and transponder is
provided in the appendix of the Operating instructions.
A distance measurement between HMI device and transponder is only possible if both
devices are in range of each other. The following table shows when a distance measurement
is successful.