Omron CJ - REFERENCE MANUAL 10-2009 Reference Manual page 703

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SCL(194) is used to convert the unsigned binary data contained in the source word S into unsigned

BCD data and place the result in the result word R according to the linear function defined by points

(As, Ad) and (Bs, Bd). The address of the first word containing the coordinates of points (As, Ar) and

(Bs, Br) is specified for the first parameter word P1. These points define by 2 values (As and Bs) before

scaling and 2 values (Ar and Br) after scaling.

The following equations are used for the conversion.

BCD conversion of (Bs – As)

Points A and B can define a line with either a positive or negative slope. Using a negative slope enables

reverse scaling.

• The result will be rounded to the nearest integer. If the result is less than 0000, 0000 will be output as

• If the result is greater than 9999, 9999 will be output.

R (unsigned BCD)

• SCL(194) can be used to scale the results of analog signal conversion values from Analog Input

Units according to user-defined scale parameters. For example, if a 1 to 5-V input to an Analog Input

Unit is input to memory as 0000 to 0FA0 hexadecimal, the value in memory can be scaled to 50 to

200 C using SCL(194).

• SCL(194) converts unsigned binary to unsigned BCD. To convert a negative value, it will be

necessary to first add the maximum negative value in the program before using SCL(194) (see

SCL(194) cannot output a negative value to the result word, R. If the result is a negative value, 0000

will be output to R.

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

• ON if the contents of C (Ar) or C+1 (Br) is not BCD.

• ON if the contents of C+1 (As) and C+3 (Bs) are equal.

• OFF in all other cases.

• ON if the result is 0.

• OFF in all other cases.

BCD conversion of (Bs – S)

Scaling is performed according

to the linear function defined by

points A and B.

S (unsigned binary)

Converted value

3. Instructions

Chapters

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