Configuration
4.4 S7 Distributed Safety
Fail-safe operation of the Mobile Panel 277F IWLAN
Function Manual, 08/2008, 6AV6691-1FQ01-2AB0
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F_FB_RNG_n reacts as follows:
– The HMI device is supplied with user data, such as the effective range ID and the
status of the HMI device in the effective range, if it is located in the effective range.
– If no other HMI device is logged on in the effective range, the operator can log on the
HMI device in the effective range.
– The outputs of F_FB_RNG_n are set according to the state of the enabling button of
the logged on HMI device.
The setting for E-STOP output depends on whether or not the HMI device is logged on
in the effective range.
– The RNG_BUSY output of F_FB_RNG_n is set to "1" if the HMI device is logged on in
the effective range.
– The operator can activate the "Override" mode if needed.
– If the operator wants to exit the effective range, he can log the HMI device off from the
effective range.
● Removed with communication error
PROFIsafe communication with the HMI device was interrupted without explanation.
The following outputs are set in F_FB_RNG_n:
– GLOB_RD, if the HMI device was not logged on in the effective range.
– SHUTDOWN, if the HMI device was logged on in the effective range.
The corresponding signal is reset following acknowledgment of the communication
error or the MP status reset is set. The allocated effective range is enabled again by
F_FB_RNG_n for logging on of an HMI device .
● Integrated with communication error
PROFIsafe communication with the HMI device is resumed after a brief interruption,
enabling user data to be exchanged again between the HMI device and F CPU. As long
as communication error in not acknowledged, F_FB_RNG_n reacts as follows:
– The HMI device is supplied with user data (effective range ID, status of the HMI device
in the effective range), if it is located in the effective range.
– If the emergency stop of the HMI device is pressed, the E_STOP output of
F_FB_RNG_n is set to "0".
Override in the safety program
The override switch should only be active as long as the protective mechanism is active.
Connect the following in the safety program to ensure this reaction:
● The switch position of the override switch with the evaluation signals of the protective
device
● The result of the first link with the OVERRIDE input of F_FB_RNG_n
Addresses of PII and PIQ
You can find the start address of the PII and PIQ AA in HW Config in the PROFIsafe settings
for the HMI device.
