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FP2/FP2SHI/O Allocation

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3.6 I/O Numbers of Free Slots

3.6.1 I/O Numbers of Free Slots

I/O numbers are also assigned to modules (slots) where no units are installed. Program-

ming and system construction can be made more efficient by using an appropriate

manner of assigning I/O numbers.

3.6.2 Differences Due to Allocation Methods

The manner of assigning I/O numbers differs depending on the I/O allocation method.

3.6.2.1 When Arbitrary Allocation is Used

I/O point numbers can assigned as desired.

Advantage

When designing a system with the intention of adding units in the future, you can use

arbitrary allocation to assign ahead of time the I/O point numbers of the units to be add-

ed.

If no assignment is made, 0 is assigned.

By using I/O number assignments that take into account future expansion when creat-

ing the program, no discrepancies will occur when the new units are added on. Planning

ahead for expansion improves efficiency.

Panasonic fp2/fp2sh User Manual

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