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Agilent 4155B/4156B VXIplug&play Driver User’s Guide, Edition 4
Driver Functions
hpe5250a_openList_Q
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.
