Safety Integrated - Industry - Siemens

Ex. No.
11 What is the F-I/O-module data block used for?
The following functions can be realized with the variables of
the F-I/O-module data block:
■ Checking whether current F-I/O-modules or individual
F-I/O-module channels are passivated.
■ Manual or automatic reintegration of F-I/O-modules after
error recovery.
■ Passivation and reintegration of F-I/O-modules via the
safety program.
■ Reconfiguration of fail-safe DP-standard slaves.
What is the structure of an F-I/O-module data block?
The two following tables explain the variables of the F-I/Omodule
data block. Both tables differ in the type of user access
to the variables:
■ Read and write access by the user: page 351
■ Read access by the user: page 352
The variables of the F-I/O-module data block can, for example,
be monitored with the variable table in STEP 7. The following
table gives examples:
Operand Symbol Comment
DB819.DBX 0.0 "F00001_4_8_F_DI_DC24V".PASS_ON Variable "PASS_ON" der F-DI
DB820.DBX 2.1 "F00007_4_F_DO_DC24V_2A".QBAD Variable "QBAD" der F-DO
350 Functional Example No. AS-FE-I-011-V10-EN