Siemens SIMATIC HMI Operating Instructions Manual page 114

Operator controls and displays
5.6 Using a memory card with the HMI device
Instructions
CAUTION
Malfunctions
If the HMI device is resting on its front, the following can be activated:
• The emergency stop button
• The key-operated switch or an illuminated pushbutton
ESD
When working in the open housing, ensure that current-carrying conductors do not come
into contact with electrical circuits.
Note the ESD instructions.
CAUTION
Possibility of shutdown while logging onto the effective range
If the HMI device no longer recognizes the transponder and, therefore, the measuring
range, it triggers a shutdown.
To remove or insert the memory card, rest the HMI device on its front. Align the HMI device
so that it is still possible to measure the distance between the HMI device and the
transponder. Distance measurement between HMI device and transponder (Page 61)
If possible, log the HMI device off from the effective range.
CAUTION
Shutdown or rampdown of the system
When you insert or remove the memory card, remove the main battery. This failure of the
main battery is bridged by the bridge battery, if fitted. The maximum buffer time is 5
minutes. If you do not replace the main battery after 5 minutes, the HMI device will switch
off. If the HMI device has been integrated, this will lead to a shutdown or rampdown of the
system.
Do not exceed the buffer time!
NOTICE
Multimedia card
The multimedia card of the SIMATIC S7 PLC cannot be used.
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This can bring the system to a standstill unintentionally.
This can result in malfunctions.
Mobile Panel 277F IWLAN
Operating Instructions, 12/2007, A5E01003940-01