Root (Root) - IDEC FC4A-C10R2 User Manual

Fc4a series microsmart micro programmable logic controller

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ROOT (Root)

Applicable CPU Modules

FC4A-C10R2/C

FC4A-C16R2/C

Valid Operands

S1 (Source 1)

D1 (Destination 1)

For the valid operand number range, see pages 6-1 and 6-2.

Since the ROOT instruction is executed in each scan while input is on, a pulse input from a SOTU or SOTD instruction

should be used as required.

The ROOT instruction cannot be used in an interrupt program. If used, a user program execution error will result, turning

on special internal relay M8004 and the ERR LED on the CPU module.

Valid Data Types

Examples: ROOT

When input is on, the square root of operand designated by S1 is extracted and

is stored to the destination designated by D1.

Valid values are 0 to 65535. The square root is calculated to two decimals, omit-

ting the ﬁgures below the second place of decimals.

FC4A-C24R2/C

Destination to store results

When a word operand such as D (data register) is designated as the source or destination, 1

point (word data type) is used.

FC4A-D20K3/S3

Before Execution

FC4A-D20RK1/RS1 & FC4A-D40K3/S3

After Execution

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