Communication Error With The Hmi Device Logged On In The Effective Range - Siemens Second Wind Function Manual

Operation
6.2 Typical applications
6.2.7.2

Communication error with the HMI device logged on in the effective range

Starting situation
The HMI device must be logged on at the effective range.
Action
A communication error occurs.
The F-CPU executes a shutdown. It stops the plant unit that belongs to the effective range.
The LED "SAFE" and the LED "RNG" go out. The operator is alerted that a secure connection is not
present.
Case 1:
Communication can be restored within 60
seconds.
Result case 1: Communication is restored.
The "Acknowledgment of communication error" dialog box opens. The operator acknowledges the
communication error in this dialog box.
The shutdown signal is revoked and the effective range is released for all HMI devices.
PROFIsafe communication is again possible.
Result case 2: Communication remains interrupted for more than 60 seconds
After 60 seconds the project is terminated.
The HMI device displays the Windows CE Desktop with the Loader.
If the operator enters the WLAN area again with the HMI device and WLAN communication is
reestablished, the operator has to acknowledge the communication error in the "Acknowledgment of
communication error" dialog box.
The shutdown signal is revoked.
The HMI device is fully functional again.
98
Case 2:
Communication remains continuously interrupted.
Fail-safe operation of the Mobile Panel 277F IWLAN
Function Manual, 08/2008, 6AV6691-1FQ01-2AB0