xLadder user manual-V2.0.0.6

6.5.14 Real number to ASCII code

Input/output Operand

Data type

IN

VD, ID, QD, MD, SD, SMD, LD, AC, constant, *VD, *LD, *AC

Real number

FMT

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

Byte

OUT

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

Byte

RTA:The instruction converts the real number to ASCII

characters. (FMT) format specifies the conversion

accuracy of the right of the decimal point.

The conversion result is placed in the output buffer from

the OUT.The length of the output buffer is 3 to 15

characters.

Error conditions:

nnn > 5

ssss < 3

ssss < Number of characters in OUT

The following is the RTA instruction format (FMT) operand definition:

The length of the output string is specified by the SSSS field.0, 1, or 2 bytes are not

valid.The effective range of the NNN is from 0 to 5.NNN is equal to 0, the output

shows no decimal point.When the NNN value is greater than 5 or when the specified

output string length is too small to store the conversion value, the output string is

filled with ASCII space characters.The C bit specifies using a comma (C = 1) or a

decimal point (C = 0).

The output according to the following rules:

1.Positive number is written to output buffer without a sign.

2.Negative number is written to the output buffer with “ - ” .

3.The starting zero on the left of the decimal point is compressed.

4. The number of characters of the right of the decimal point is equal to the value of “nnn”.

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