Pilz PSS SB FT, Basic license - Manual (Page 163)

7-3 Modular Block System: Burner Management
• Create OB101
- Reset all enable flags ( ENBL/FG) at the start of OB or at the start of
the cycle. This way you can be sure that the FG/ENBL flags are
indeed set
INFORMATION
On some blocks (e.g. E-STOP) the input parameter “
SSNR” is monitored
(see relevant SB descriptions in chapter 6). These blocks must be run
through as part of each PSS-cycle. The following commands should
therefore be inserted once only at the end of OB101:
DB015 A
DW1015 I
- Call up the E-STOP standard function blocks directly in OB101 or, for
example, initialise a global call-up in an FB.
- Check:
Have all the blocks required for the application been called up?
• Things to note when starting up the program
Tip:
The PSS clears all flag words, outputs, timers and counters in the FS
section on start-up. All the necessary constants should therefore be
set when starting up the program.
• Link project
INFORMATION
- Check all safety devices to ensure that they function correctly.
- Short-circuits and wire breaks should be simulated.