Safety Integrated - Industry - Siemens

Process: Channel / module error (manual reintegration)
Precondition
In the safety program the user acknowledges the reintegration
by providing ACK_REI with a positive edge.
Process sequences
If an error is pending at the F-module (channel or module error),
the F-module is passivated by the F-system. If the error
has been removed and "ACK_NEC = 1"(default value), the
State
F-module not passivated (1, 2)
Error occurs
F-module passivated (3)
Error removed
F-module remains passivated (4, 5)
User acknowledged
F-module reintegrated (6)
F-module is only reintegrated after acknowledgement by the
user.
The following figure and table illustrates the process sequence.
Number in brackets indicates the state
Description of status and events F-I/O-module data block / 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-module is not passivated.
Event: error occurs at the F-module.
1 0 0 0 0 0
2 F-module has recognized the error.
Event: F-system recognizes the error at the F-module.
1 0 0 0 0 1
3 F-system has passivated the F-module.
Event: Removing the error at the F-module.
1 0 1 1 0 1
4 F-module has recognized that the error has been removed.
Event: F-system recognizes that the error at the F-module has been removed.
1 0 1 1 0 0
5 F-module remains passivated F-system requests user acknowledgement. 1 0 1 1 1 0
Event: User acknowledges (positive edge) 0->1
6 F-system has reintegrated the F-module 1 x 0 0 0 0
Functional Example No. AS-FE-I-011-V10-EN 359
Ex. No.
11