Prosoft-technology AN-X-PB Manual do Utilizador descarregar pdf (Página 35)

AN-X-PBCAPT Page

TIP

Use parentheses freely in your equations to avoid problems associated

with precedence of operators.

Keywords

The equation can include the following keywords, which are described in

detail below.

Keyword Description

STS Frame status

Len Date length, does not include the checksum

SD Start delimiter

DA Frame destination

SA Frame source

FC Frame control

DSAP Destination SAP

SSAP Source SAP

DataByte[ofs] Data byte at byte offset ‘ofs’ into the frame data

DataWord[ofs]

Data word at byte offset ‘ofs’ into the frame data

CmdArg[num] Passed parameters, see page 35

GapTme Gap time, in microseconds, see page 21

Frame Status, STS

The frame status can be one of the following:

Symbolic name Value Description

STSSTP 0x01 Stop bit error

STSPAR 0x02 Parity bit error

STSSD 0x04 Invalid Start Delimiter

STSRPT 0x08 Start Delimiter Repeat error

STSUND 0x10 Frame Underrun

STSOVR 0x20 Frame Overrun

STSCHK 0x40 Checksum Incorrect

STSED 0x80 Invalid End Delimiter

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Prosoft-technology AN-X-PB Manual do Utilizador Página 35