Formal parameters and actual parameters, Mbs basics – Pilz PSS SB FT, Basic license User Manual
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5-2
MBS Basics
Modular Block System: Burner Management
Formal parameters and actual parameters
Parameters can be set on the MBS standard function blocks. Formal
parameters are established in the block header. The user must assign a
corresponding actual parameter to each formal parameter. When the
standard function block is called up in the user program, the formal
parameters will be replaced by the user-specific actual parameters.
Further information is available in the PSS WIN-PRO “Progamming Manu-
al”.
Formal parameters
PSS WIN-PRO: Pilz IL
X
B
W
D
Z
Actual parameters
PSS WIN-PRO: Pilz IL
Input bit E
Output bit A
Flag bit M
Input byte EB
Output byte AB
Flag byte MB
Constant KB
Input word EW
Output word AW
Flag byte MW
Constant KW
Data block DB
Timer or counter