DAQmx Switch Open Relays
Opens the relays you specify. If you set wait for settling to TRUE, this VI waits only after opening all relays. If you want to wait for settling after opening each relay, use this VI multiple times to open each relay separately.
When you operate relays directly, you circumvent the protection offered by channel usage types. Avoid using this VI when you use the DAQmx Switch Connect VI or the DAQmx Switch Disconnect VI. This VI does not pass relay changes to those VIs.
Place on the block diagram. |
Find on the Functions palette. |
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relays is the relay or set of relays to open. A DAQmx switch constant lists all relays available on devices installed in the system. Right-click the constant, and select Browse from the shortcut menu to select multiple relays. You also can supply a string that contains a comma-delimited list of relays. Refer to the switch module specifications for relay names and locations.
If you have an array of relays, use the DAQmx Flatten Channel String VI to convert the array to a list. |
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error in describes error conditions that occur before this VI or function runs. The default is no error. If an error occurred before this VI or function runs, the VI or function passes the error in value to error out. If an error occurs while this VI or function runs, the VI or function runs normally and sets its own error status in error out. Use the Simple Error Handler or General Error Handler VIs to display the description of the error code. Use error in and error out to check errors and to specify execution order by wiring error out from one node to error in of the next node.
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wait for settling specifies whether this VI waits for the switches to settle before returning. If wait for settling is FALSE, the VI returns immediately after the operation. Use the Settling Time property to control the settling time. | ||||||
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error out contains error information. If error in indicates that an error occurred before this VI or function ran, error out contains the same error information. Otherwise, error out describes the error status that this VI or function produces. Right-click the error out indicator on the front panel and select Explain Error from the shortcut menu for more information about the error.
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