Why are FB parameters defined as register and not as constant?
FAQ #100033
Some of the parameters of the FB's for programming the H-Modules are defined as registers that have to be loaded before the call of the FB.
A constant can have a value up to 16383 (
14 bit). Unlike a constant, a register can hold a 31 bit value (signed). Since the values of the parameters can be up to 31 bits, it is required to use registers to hand over the parameters to the FB
Categories
PCD2 / Hxxx
PCD3 / Hxxx
PCD4 / Hxxx
Last update: 29.05.2015 07:17
First release: 08.06.2004 12:05
Views: 10600
