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DT SampleChannelThruModem.vi

LabVIEW DataTaker Driver >> DataTaker High Level Modem >> DT SampleChannelThruModem.vi

Uses serial modem communications. Given a channel number and type, initiates serial modem connection, configures dataTaker for acquisition, performs an immediate schedule of specified channel, reads the value acquired from the channel, then disconnects from serial port.

Notes

- Assumes that no job is currently running on dataTaker.

Error Message Generated

- DT HIGHLEVEL ERROR: Unable to sample channel(s) thru modem.


DT SampleChannelThruModem.vi


Controls and Indicators

cstr

phone number is the phone number used to connect to a dataTaker using a modem connection.

cenum

DT type shows the type of dataTaker that is connected (DT800 or the DT500 family).

cvsrn

VISA resource name is the VISA resource used for serial communications (ignore when using DARTS protocol).

cclstb

port config: serial port configuration options (data bits, stop bits, parity, and flow control are ignored when using DARTS protocol).

    cenum

    parity is the parity used for the connection. The DT 500 uses none, while the DT800 uses none, odd, or even parity.

    cu16

    stop bits specifies the number of stop bits used to indicate the end of a frame.

    cu16

    data bits is the number of bits in the incoming data.

    cu32

    baud rate is the rate of transmission

    cenum

    flow control sets the type of control used by the transfer mechanism.

cenum

protocol specifies whether to use standard serial communications, or the DARTS protocol (DT500 only).

cclstp

The error in cluster can accept error information wired from VIs previously called. Use this information to decide if any functionality should be bypassed in the event of errors from other VIs.

The pop-up option Explain Error (or Explain Warning) gives more information about the error displayed.

    cbool

    The status boolean is either TRUE (X) for an error, or FALSE (checkmark) for no error or a warning.

    ci32

    The code input identifies the error or warning.

    cstr

    The source string describes the origin of the error or warning.

cclst

channel config is a cluster that contains details on the channels configuration.

    cstr

    channel number is the number or name of the dataTaker channel.

    cenum

    channel type is the type of sensor connected to the channel.

    cenum

    channel wiring is the type of wiring configuration used to connect the sensor to the channel.

    c1dstr

    channel option list is the channel option of the particular channel.

    NOTE Multiple channel options can be entered in each element of the array, or in a single array element, separated by comma's. No brackets, "()", are required.


idbl

channel data is the acquired sample data

ibool

timeout? is true if the acquisition timed out

iclst

The error out cluster passes error or warning information out of a VI to be used by other VIs.

The pop-up option Explain Error (or Explain Warning) gives more information about the error displayed.

    ibool

    The status boolean is either TRUE (X) for an error, or FALSE (checkmark) for no error or a warning.

    ii32

    The code input identifies the error or warning.

    istr

    The source string describes the origin of the error or warning.

(C) 2003 dataTaker Pty Ltd & ICON Technologies Pty Ltd

www.dataTaker.com

www.icon-tech.com.au


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