MC DAQ Start Stop.vi
- Updated2023-02-21
- 4 minute(s) read
MC DAQ Start Stop.vi
Purpose
Starts or stops transmission of the DAQ lists for the specified Measurement task.
Format
Input
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DAQ ref in is the task reference from the previous Measurement task VI. The task reference is originally returned from MC DAQ Initialize.vi, and then wired through subsequent Measurement task VIs. | ||||||
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mode indicates the type of function to be performed.
Stop DAQ List Configures the ECU to stop transmitting a DAQ task. If stopped, properties of the DAQ task can be changed using MC Set Property.vi. This function is performed automatically before MC DAQ Clear.vi. Start DAQ List Configures the ECU to start sending data for a DAQ task. Ensure that the DAQ list has not yet been transferred to the ECU first. Once started, properties of the DAQ list can no longer be changed using MC Set Property.vi. This function is performed automatically before the first read of the DAQ list with MC DAQ Read.vi. Transmit DAQ List to ECU Transfers the DAQ list to the ECU, but does not start it. For example, use this mode if you want to change the session status before starting the DAQ list. For some ECUs, this is necessary. Prepare For Start All Prepares DAQ or STIM lists to be started by only one command. This is useful when multiple DAQ or STIM lists are used with the same ECU. After preparing the DAQ/STIM lists with this command, use the same VI with the mode Start All DAQ Lists to start all lists at the same time. Start All DAQ Lists Starts all previously prepared DAQ or STIM lists at the same time. Stop All DAQ Lists Stops all running DAQ or STIM lists on the same ECU with one command. |
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Error in is a cluster which describes error conditions occurring before the VI executes. If an error has already occurred, the VI returns the value of the error in cluster to error out.
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Output
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DAQ ref out is the same as DAQ ref in. Wire the task reference to subsequent VIs for this task. | ||||||
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Error out describes error conditions. If the Error in cluster indicated an error, the Error out cluster contains the same information. Otherwise, Error out describes the error status of this VI.
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Description
MC DAQ Start Stop.vi is optional to start or stop transmission of the DAQ lists for an M&C Measurement task to use MC DAQ Read.vi. If you do not specify MC DAQ Start Stop.vi (Start DAQ List) before your first Read VI, it is implicitly performed by the first MC DAQ Read.vi call.
After you start the transmission of the DAQ lists, you can no longer change the configuration of the task with MC Set Property.vi. You must call MC DAQ Start Stop.vi (Stop DAQ List) first.