Rockwell-automation 1771-DB BASIC MODULE Manual de usuario descargar pdf (Pagina 205)

100

101

Chapter

Call Routines 0–68

12 -15

Use CALL 24 to convert a BASIC floating-point number to an SLC 16-bit

signed integer SLC number and place result in the BASIC module output

buffer, DH-485 common interface file. This call is used with DH-485 calls

for BASIC module to SLC data conversion. See also CALL 14.

See Chapter 8 for more information.

The fractional part of the BASIC floating-point value is truncated. If the

BASIC floating-point value is less than -32768, the value placed in the

BASIC module output buffer is -32768. If the BASIC floating-point value

is greater than +32767, the value placed in the BASIC module output

buffer is +32767. You are responsible for checking the range of the

number before conversion.

Input and Output Arguments

This routine has two input and no output arguments. The first input value is

the data variable you want to convert to 16-bit integer. The second input

value is the address number (100 to 139) of the word that receives the

converted value in the BASIC module output buffer.

Syntax

PUSH

value to be converted

PUSH word location (100–139) that receives the converted value

CALL

Example

10 W = 17

40 PUSH W : REM THE VALUE TO BE CONVERTED

50 PUSH 120 : REM WORD 120 OF BASIC OUTPUT BUFFER GETS W.

60 CALL 24 : REM DO THE F.P. TO 16–BIT SIGNED CONVERSION

CALL

24:

BASIC Floating Point to SLC

16-Bit Signed Integer

Chapter

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