Safety Integrated - Industry - Siemens

Ex. No.
11 Process: F-communication error
Note
For "F-communication error" automatic reintegration
is not possible!
Precondition
In the safety program the user acknowledges the reintegration
by providing ACK_REI with a positive edge.
State
F-I/O not passivated (1)
Error occurs
F-I/O passivated (2)
Error occurs
F-I/O remains passivated (3)
User acknowledged
F-I/O reintegrated (4)
Explanations for the table:
(*1): BF-LED at IM 151 HF is on. BF-LED at F-CPU is blinking.
(*2): The BF-LEDs are off.
360 Functional Example No. AS-FE-I-011-V10-EN
Process sequences
At F-communication error (e.g. due to disconnecting F-CPU
and ET200) the entire affected F-I/O is passivated. If the error
has been removed the F-I/O is only reintegrated after acknowledgement
by the user. This applies irrespective of the
ACK_NEC value. The following figure and table illustrates the
process sequence.
Numbers in brackets indicate the state.
Description of status and events F-I/O data block
F-DI and F-DO / SF-LED
A: ACK_NEC
B: ACK_REI
C: PASS_OUT
D: QBAD
E: ACK_REQ
F: SF-LED
A B C D E F
1 F-I/O is not passivated.
Event: Error occurs.
x 0 0 0 0 0
2 F-module is passivated.
Event: Error removed.
x 0 1 1 0 0 (*1)
3 F-I/O has recognized that the error has been removed. x 0 1 1 1 0 (*2)
Event: User acknowledges (positive edge). 0->1
4 F-system has reintegrated the F-I/O. x x 0 0 0 0