Function of each device
3-3. Data Disposal of Programmable Controller
According to different usage and purpose, XC series programmable controllers use 5 types of
count format. For their usage and function, see the following：
《DEC》（DEC：DECIMAL NUMBER）
¾ The set value of timer and counter（K constant）
¾ The ID of auxiliary relay（M），timer（T），counter（C），status（S）（Soft
unit’s number）
¾ Assign the value in the operands and instruction’s action（K constant）
《HEX》（HEX：HEXADECIMAL NUMBER）
¾ The same with DEC data，it is used to assign the value in the operands and
instruction’s action（H constant）
《OCT》（OCT：OCTAL NUMBER）
¾ The input relay, output relay’s soft units’ ID of XC series PLC are allocate in
the format of OCT data. So, it can go on carry of [1-7，10-17，．．．70-77，
100-107].
《BCD code》（BCD： BINARY CODE DECIMAL）
¾ BCD is the method which use 4 bits binary to denote decimal 0~9. It’s easy to
despose bit. So, BCD is available to denote digital switch or 7 segments display
control.
《Other data（float）》
¾ XC series PLC has the function of high precision floating point operation. Use binary
floating point data to execute floating point operation, use decimal floating value to
execute monitor.
《BIN》（BIN：BINARY NUMBER）
¾ Just as said before，carry on data allocation to timer, counter or data register in
the format of DEC. or Hex., But in the PLC, these data are all be put in the
format of binary data. And, when carry on monitor on the peripherial device,
these soft units will auto switch to be DEC. data as shown in the graph.（they
can also switch to be Hex. Data.）.
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