Ranges In The Plant - Siemens SIMATIC HMI Operating Instructions Manual

1.5

Ranges in the plant

WLAN range
The WLAN range is the range in the plant where the HMI device communicates with other
communication nodes over a wireless local area network.
①
②
③
When the PROFIsafe communication between the controller and operator panel is
established in the WLAN range, the emergency stop button on the HMI device becomes
active.
Effective range
An effective range is the range in which sections of the system, for example a machine, can
be operated with the enabling buttons of the HMI device. A requirement for fail-safe
operation is that the HMI device is logged onto an effective range within the WLAN range.
Mobile Panel 277F IWLAN
Operating Instructions, 12/2007, A5E01003940-01
Access point is the network transition from WLAN to LAN
WLAN range in which communication with the access point is possible
Mobile panel in the WLAN range; the emergency stop button is active, the enabling buttons
are without function.
Overview
1.5 Ranges in the plant
27