Siemens Second Wind Function Manual page 13

Effective range
An effective range is the range in which sections of the plant, e.g. a machine can be
operated with the enabling buttons of the HMI device. An effective range is formed physically
with transponders that are mounted in the vicinity of the machine. Each transponder has a
unique ID. The transponder emits this ID in a lobe-shaped area. The ID is received by the
HMI device, which enables the HMI device to determine its distance from the transponder.
Additional information about the transponders is provided in the chapter Planning effective
ranges (Page 46) and in the operating instructions for the HMI device.
①
②
③
When the HMI device detects that it is within an effective range the operator can log the HMI
device on at the effective range. Safe operation of the plant unit delimited by the effective
range is only possible after successful connection.
Effective ranges should not overlap.
All effective ranges available in the plant are stored in the project. The effective ranges are
verified in the acceptance procedure for the plant.
Fail-safe operation of the Mobile Panel 277F IWLAN
Function Manual, 08/2008, 6AV6691-1FQ01-2AB0
Effective range 1, formed by a transponder
Effective range 2, formed by two transponders
The mobile panel is located in effective range 3. The emergency stop button is active The
enabling buttons are active after logon in the effective range.
Overview and definition of terms
1.2 Areas in the plant
13