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ioLogik MXIO DLL API Reference Direct I/O Command Sets

6-18

Digital Output Commands

DO_Reads

This function code is used to read the output statuses of contiguous

D/O channels.

C/C++

Arguments

Return Value

int DO_Reads ( int hConnection,

BYTE bytSlot,

BYTE bytStartChannel,

BYTE bytCount,

DWORD * dwValue);

hConnection: The handle for an I/O connection.

bytSlot: Slot number of the I/O module, from 1 to 32.

This parameter is inactive for the ioLogik

E2000 and R2000.

bytStartChannel: Specifies the starting channel.

bytCount: The number of channels to read.

dwValue: A pointer to the statuses of the contiguous D/O

channels; each bit holds the value of one

channel. A bit value of 0 represents the digital

output status of the start channel. A bit value of

1 represents the status of the second digital

output channel. The values of the unused bits

are random.

Succeed MXIO_OK.

Fail Refer

oRe

nCodes.

DO_Read

This function code is used to read the output status of a specific

D/O channel.

C/C++

Arguments

Return Value

int DO_Read ( int hConnection,

BYTE bytSlot,

BYTE bytChannel,

BYTE * bytValue);

hConnection: The handle for an I/O connection.

bytSlot: Slot number of the I/O module, from 1 to 32.

This parameter is inactive for the ioLogik

E2000 and R2000.

bytChannel: The desired channel.

bytValue: A pointer to the output value of the desired

channel.

Succeed MXIO_OK.

Fail Refer to Return Codes.

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Moxa M-1401 Manuale Pagina 55

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