Siemens S7-200PLC Especificaciones descargar pdf (Pagina 315)

100

101

SIMATIC Instructions

9-139

S7-200 Programmable Controller System Manual

C79000-G7076-C233-01

Figure 9-49 gives examples of values that are formatted using a decimal point (c =

0) with four digits to the right of the decimal point (nnn = 100).

in=-12

in=1234567

Out OutOutOutOut Out Out

+1 +2 +3 +4 +5 +6 +7

Out

01 2

123 45

FMT

Example:

Out Out OutOut

+8 +9 +10 +11

MSB

76543210

LSB

nnn0000c

c = comma (1) or decimal point (0)

nnn = digits to right of decimal point

Figure 9-49 FMT Operand for DTA Instruction

Real to ASCII

The Real to ASCI instruction converts a floating point

value (IN) to an ASCII string. The format (FMT) specifies

the conversion precision to the right of the decimal, and

whether the decimal point is shown as a decimal point or

a period, and the output buffer size. The resulting

conversion is placed in an output buffer beginning with

OUT. The length of the resulting ASCII string is the size

of the output buffer, and can be specified to a size

ranging from 3 to 15.

Error conditions that set ENO = 0: SM4.3 (run-time),

0006 (indirect address), no output (illegal format or buffer

too small)

Inputs/Outputs Operands Data Types

IN VD, ID, QD, MD, SD, SMD, LD, AC, *VD, *AC, *LD REAL

FMT VB, IB, QB, MB, SMB, LB, AC, Constant, *VD, *AC, SB, *LD BYTE

OUT VB, IB, QB, MB, SMB, LB, *VD, *AC, SB, *LD BYTE

RTA IN, OUT, FMT

RTA

FMT

ENO

OUT

222 224

333

221

1 2 ... 310 311 312 313 314 315 316 317 318 319 320 ... 503 504

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Siemens S7-200PLC Especificaciones Pagina 315

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