Basics Of I/O Allocation; How To Count The I/O Numbers; Concept Of I/O Number Allocation - Panasonic FP7 Series User Manual

3.1 Basics of I/O Allocation

3.1 Basics of I/O Allocation

3.1.1 How to Count the I/O Numbers

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Counting and expression of the I/O numbers
Since I/O numbers are handled in units of 16 points, they are expressed as a combination of a
device type code and the lowest-digit of a decimal or hexadecimal number.
E.g. In the case of an external input, X0 to X9 and XA to XF are used.

3.1.2 Concept of I/O Number Allocation

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Examples of I/O Number Allocation
I/O numbers are determined by the status of unit attachment and the occupied I/O points
allocated to respective units.
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Starting word numbers of input/output units and intelligent units
● By default, the starting word number for the unit attached next to the CPU unit is set at "10",
and the I/O numbers start with X100 or Y100.
● The starting word number for each unit can be freely changed in the "FP7 Configuration"
menu of the tool software FPWIN GR7.
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How to count I/O numbers for units that have both inputs and outputs
In the case of a unit that has both inputs and outputs (e.g. mixed input/output units, intelligent
units), input numbers and output numbers start with the same value.
E.g. If input numbers for a mixed input/output unit are X100 to X11F, the unit's output numbers
are set at Y100 to Y11F.
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