Omron SYSMAC CS Series Instruction & Reference Manual page 625

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Table of Contents

Example Programming

In the following example, it is assume that an analog signal from 1 to 5 V is converted and input to D0

as 0000 to 0FA0 hexadecimal. SCL(194) is used to convert (scale) the value in CIO 200 to a value

between 0 and 300 BCD.

When CIO 0.00 is ON, the contents of D0 is scaled using the linear function defined by point A (0000,

0000) and point B (0FA0, 0300). The coordinates of these points are contained in D100 to D103, and

the result is output to D200.

Contents of D200 (R)

An Analog Input Unit actually inputs values from FF38 to 1068 hexadecimal for 0.8 to 5.2 V. SCL(194),

however, can handle only unsigned binary values between 0000 and FFFF hexadecimal, making it

impossible to use SCL(194) directly to handle signed binary values below 1 V (0000 hexadecimal), i.e.,

FF38 to FFFF hexadecimal. In an actual application, it is thus necessary to add 00C8 hexadecimal to

all values so that FF38 hexadecimal is represented as 0000 hexadecimal before using SCL(194), as

shown in the following example.

Contents of D 200 (R)

CS/CJ/NSJ Series Instructions Reference Manual (W474)

Contents of D0 (S)

The value in CIO

0200 plus 00C8

Point A (00C8 Hex → 0000 (BCD))

Point B (1068 Hex → 0300 (BCD))

Contents of D0 (S)

3. Instructions