Safety Integrated - Industry - Siemens

Ex. No.
11 Description of the network function:
The PASSIVATION_ON indicator light indicates that at least
one channel of F DO and/or F-DI is passivated. Basically, there
are two different methods to test whether at least one channel
of a module is passivated:
Method Advantage
1 Polling all channels of the F-module:
• for F-DI: via the "QBAD_I_xx" variables
• for F-DO: via the "QBAD_O_xx" variables
2 Polling the entire F-module:
• via the "QBAD" variable.
In the sample code both methods are used for demonstration
purposes. "Method 2" can also be used here to detect whether
the F-DO is passivated.
FB3 / Network 2
DB818.DBX 36.3
Overview of the signals of the network:
The F-Global data block (F_GLOBDB) is a fail-safe data block
which contains all global data of the safety program as well as
additional information for the F-system.
Amongst other things, VKE0 and VKE1 provided there.
Description of the network function:
The passivated channels
can be identified
individually.
Polling only possible
once.
Channel or module errors at the F-DI cause passivation of the
F-DI at the entire module. After removing the error, the F-DI is
automatically reintegrated.
340 Functional Example No. AS-FE-I-011-V10-EN
DB819.DBX 0.1
Signal Source / Target Meaning
F_GLOBDB.VKE0 From F-Global-DB Result of logic operation "0"
F00001_4_8_F_DI_DC24V.ACK_NEC To F-I/O-module data block of F-DI F-DI is automatically reintegrated
Warning
Automatic reintegration is only permitted if an automatic
startup of the plant is not possible after the error
has been removed.