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Read Sequencer Register (G Dataflow)

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Last Modified: July 23, 2019

Reads the value of a pattern sequencer register.

Use pattern sequencer registers to pass numeric values between the pattern sequencer and a runtime test program. For example, you can use this node to read a register modified by the write_reg opcode during a pattern burst.

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session in

Instrument session obtained from the niDigital Initialize with Options node.

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sequencer register

The sequencer register to read from.

Name Description
reg0 Reads sequencer register 0.
reg1 Reads sequencer register 1.
reg2 Reads sequencer register 2.
reg3 Reads sequencer register 3.
reg4 Reads sequencer register 4.
reg5 Reads sequencer register 5.
reg6 Reads sequencer register 6.
reg7 Reads sequencer register 7.
reg8 Reads sequencer register 8.
reg9 Reads sequencer register 9.
reg10 Reads sequencer register 10.
reg11 Reads sequencer register 11.
reg12 Reads sequencer register 12.
reg13 Reads sequencer register 13.
reg14 Reads sequencer register 14.
reg15 Reads sequencer register 15.
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error in

Error conditions that occur before this node runs.

The node responds to this input according to standard error behavior.

Standard Error Behavior

Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

error in does not contain an error error in contains an error
If no error occurred before the node runs, the node begins execution normally.

If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

Default: No error

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session out

Handle that identifies the session in all subsequent NI-Digital node calls.

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value

Value read from the sequencer register.

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error out

Error information.

The node produces this output according to standard error behavior.

Standard Error Behavior

Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

error in does not contain an error error in contains an error
If no error occurred before the node runs, the node begins execution normally.

If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

Where This Node Can Run:

Desktop OS: Windows

FPGA: Not supported

Web Server: Not supported in VIs that run in a web application

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