kthiel
May 10th, 2002, 12:06 AM
What is a good source for explaining:
1) The use of the shift command (Siemens S7-200) in converting back and forth between integer (word) values and real (double word) values.
2) The use of tables and table find command (Siemens S7-200) in converting analog inputs into useful values with units (ie psi, temp, etc.). Why is this done instead of using floating point math to provide the conversion. I am in the process of converting some logic from the table find method into the floating point math conversion method and am looking for advantages and disadvantages I may not be aware of.
1) The use of the shift command (Siemens S7-200) in converting back and forth between integer (word) values and real (double word) values.
2) The use of tables and table find command (Siemens S7-200) in converting analog inputs into useful values with units (ie psi, temp, etc.). Why is this done instead of using floating point math to provide the conversion. I am in the process of converting some logic from the table find method into the floating point math conversion method and am looking for advantages and disadvantages I may not be aware of.