Begin Program Storage Begins a program storage session. Subsequent calls are stored as part of the onboard program. Details

Device Compatibility Device Compatibility 7330 N 7340 Y 7344 Y 7350 Y 7390 N NI SoftMotion Controller for CANopen—Accelnet N NI SoftMotion Controller for CANopen—Xenus N

	Board ID is a unique number assigned by Measurement & Automation Explorer (MAX) used to send and receive commands and data to or from a specific NI motion controller.
	Program (1) is the onboard program to read the status of.
	error in (no error) describes error conditions that occur before this VI runs. The default input of this cluster is no error. If an error already occurred, this VI returns the value of error in in error out. The VI runs normally only if no incoming error exists. Otherwise, the VI passes the error in value to error out. The error in cluster contains the following parameters: status is TRUE if an error occurred before this VI was called, or FALSE if not. If status is TRUE, code is a nonzero error code. If status is FALSE, code is zero or a warning code. code is a number identifying an error or warning. If status is TRUE, code is a nonzero error code. If status is FALSE, code is zero or a warning code. Use the error handler VIs to look up the meaning of this code and display the corresponding error message. source is a string that indicates the origin of the error, if any. Typically, source is the name of the VI in which the error occurred.
	Bd ID Out is provided for flow control. You can string together NI-Motion VIs by wiring the Bd ID Out terminal of one VI to the Board ID terminal of the next VI.
	Resource Out is the Axis, Vector Space, ADC, or Encoder you wired into the VI. Use Resource Output to pass the resource to another VI and/or to display information about the device.
	error out contains error information. If error in indicates an error, error out contains the same error information. Otherwise, it describes the error status that this VI produces. status is TRUE if an error occurred, or FALSE if not. If status is TRUE, code is a nonzero error code. If status is FALSE, code is zero or a warning code. code is a number identifying an error or warning. If status is TRUE, code is a nonzero error code. If status is FALSE, code is zero or a warning code. Use the error handler VIs to look up the meaning of this code and display the corresponding error message. source is a string that indicates the origin of the error, if any. Typically, source is the name of the VI in which the error occurred.

Using This VI

The Begin Program Storage VI initiates program storage in RAM. After they begin, all subsequent VIs are stored in an object buffer and not executed until the program is run with the Run Program VI. This memory storage continues until you execute the End Program Storage VI. You can store only one program at a time.

The size and number of programs is completely flexible. It is ultimately limited by the 32 total memory objects in the Object Registry or by total available memory, whichever is reached first.

The 7350 and 7340 have the following onboard memory:

	RAM	ROM
7340	1 64 k sector	2 64 k sectors
7350	2 64 k sectors	4 64 k sectors

You can run programs from either RAM or ROM, but you cannot split programs between the two, and you cannot split programs between the two 64 KB ROM sectors. With an average command size of 10 bytes, a single program can be as large as 6,400 commands. As another example, the 7350 and 7340 controllers can execute 10 programs simultaneously, five from RAM and five from ROM, with each program up to 1,280 commands long.

Notes   Attempting to store more than 32 programs generates an error. Similarly, an error is generated if you run out of memory during program storage. Both of these cases are extremely unlikely. Do not store onboard programs while other NI-Motion VIs are running. Doing so can result in incorrect program storage. To prevent unexpected interference, other applications running with different processes are not able to communicate with the controller during program storage.

If you run two onboard program VIs with the same program number, the second onboard program overrides the first. No error message is generated when this happens.