Rockwell-automation 1771-DMC_DMC1_DMC4_DXPS Control Coprocessor User M Manual de usuario descargar pdf (Pagina 188)

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Appendix B

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B-57

Puts a floating point value into a byte array. You can use this array to write

to a data item whose PLC data type is FLOAT and whose coprocessor data

type is RAW.

C Syntax

#include <copro.h>

unsigned DTL_PUT_FLT (in_val, out_buf)

float in_val;

unsigned char *out_buf;

Parameters

in_val

The control-coprocessor floating-point value.

out_buf

Specifies an array of four bytes that will receive the floating-

point value.

Returns

Status Symbolic Name Meaning

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Description

Use the DTL_PUT_FLT to convert a control-coprocessor float to a 4-byte

array in IEEE 32-bit binary format and place it into the byte array.

C Example

unsigned status;

unsigned char untyped_data[50];

float flt_val;

status = DTL_PUT_FLT (flt_val, &untyped_data[10]);

DTL_PUT_FLT

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Rockwell-automation 1771-DMC_DMC1_DMC4_DXPS Control Coprocessor User M Manual de usuario Pagina 188