Agilent Technologies Agilent E5250A Guia do Utilizador descarregar pdf (Página 90)

2-70 Agilent 4155C/4156C VXIplug&play Driver User’s Guide, Edition 1

Driver Functions

hpe5250a_openList_Q

This function will query the instrument for the channels open given in the

’openchan_list’.

The parameter ’openchan_list’ is an array of integers with each integer representing

one channel. The last number of the ’openchan_list’ should be "0" (numeric zero)

to identify the end of the list. The maximum number of channels that can be

specified by the list is 100.

The ’open_status’ parameter is an array of integers containing the return values of

the query. The ’open_status’ array returned will correspond one to one with

’openchan_list’ parameter.

Syntax ViStatus _VI_FUNC hpe5250a_openList_Q(ViSession vi,

ViInt32_VI_FAR openchan_list[ ], ViInt32 _VI_FAR open_status[ ] );

Parameters vi Instrument handle returned from hpe5250a_init( ).

openchan_list[ ] Channel numbers to know the open status. 5 digits integer.

ABCDE. where A: card number, BC: input port number, DE:

output port number. Top zero(s) can be ignored. For example, if

A=0, BC=01, and DE=01, channel number should be 101

instead of 00101.

open_status[ ] Status of the channels given in the openchan_list.

1 (opened) or 0 (closed).

hpe5250a_readStatusByte_Q

This function returns the contents of the status byte register.

Syntax ViStatus _VI_FUNC hpe5250a_readStatusByte_Q(ViSession vi,

ViPInt16 statusByte);

Parameters vi Instrument handle returned from hpe5250a_init( ).

statusByte The contents of the status byte are returned in this parameter.

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Agilent Technologies Agilent E5250A Guia do Utilizador Página 90