[SENSe:]DIGital:MEMory[:DATA]:ALL?
Syntax
[SENSe:]DIGital:MEMory[:DATA]:ALL? (@<channel>)
Description
This command performs a non-destructive read of all data stored in memory from a buffered input operation on the 34950A Digital I/O Module. The width of the first channel in each bank (i.e., channels 101 and 201) controls the width of the memory operations (64K x 8 Bits, 64K x 16 Bits, or 32K x 32 Bits). The first channel on the specified bank must be configured as an input prior to starting a buffered read (see CONFigure:DIGital command).
This command is not valid while buffered operations are enabled (see [SENSe:]DIGital:MEMory:ENABle command).
Used With:
34950A Digital I/O Module
Parameters
|
Name |
Type |
Range of Values |
Default Value |
|
<channel> |
Numeric |
One channel in the form (@sccc). |
This is a required parameter |
Remarks
Depending on the width specified (see CONFigure:DIGital:WIDTh command), the channel numbering is modified as shown below. For example, if you specify the width as a 16-bit WORD, channels 101 and 102 are combined and addressed collectively as channel 101.
|
|
Bank 2 |
Bank 1 |
||||||
|
BYTE (8 Bits): |
Ch 204 |
Ch 203 |
Ch 202 |
Ch 201 |
Ch 104 |
Ch 103 |
Ch 102 |
Ch 101 |
|
WORD (16 Bits): |
Ch 203 |
Ch 201 |
Ch 103 |
Ch 101 |
||||
|
LWORd (32 Bits): |
Ch 201 |
Ch 101 |
||||||
To read a specific number of samples from memory, use the [SENSe:]DIGital:MEMory[:DATA]? command.
To clear the memory, use the [SENSe:]DIGital:MEMory:CLEar command.
When reading data from memory, you can specify the byte order (NORMal or SWAPped) using the FORMat:BORDer command.
Return Format
This command returns all data stored in memory on the specified channel. Use [SENSe:]DIGital:MEMory[:DATA]:FORMat command to select a comma-separated ASCII ("LIST") format or a floating-point IEEE-488.2 Binary Block ("BLOCk") format.
Example
The following program segment enables a buffered read on channel 101 on the module in slot 3 and then reads the data from memory.
CONF:DIG:WIDTH
WORD,(@3101) !Width
= 16 bits
DIG:MEM:SAMP:COUN 20,(@3101) !Sample
count = 20
DIG:MEM:FORM LIST !Format
= ASCII list
DIG:MEM:ENAB ON,(@3101) !Enable
buffered read
DIG:MEM:STAR (@3101) !Start
buffered read
<Wait for sample count to be satisfied>
DIG:MEM:ENAB OFF,(@3101) !Disable
buffered read
DIG:MEM:ALL? (@3101) !Read
all samples from memory
Typical Response: 61440,65280, ...
See Also
[SENSe:]DIGital:MEMory[:DATA]?
[SENSe:]DIGital:MEMory[:DATA]:FORMat
[SENSe:]DIGital:MEMory[:DATA]:POINts?