I/O AllocationFP0
5-3Matsushita Automation Controls
5.1 I/O Number
5.1 I/O Number
Expression of numbers for input/output relays
Since input relay (X) and output relay (Y) are handled in units of 16 points, they are
expressed as a combination of decimal and hexadecimal numbers as shown below.
Decimal
1,2,3 .....
Hexadecimal
0, 1, 2, 3 A,B F..... ...
X0, X1 XF...........................
X10, X11 X1F........................
X20, X21 X2F........................
<Example> External input relay (X)
Specifying X and Y numbers
On the FP0, the same numbers are used for input and output.
Example: The same number “X20 and Y20” can be used for input and output
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