VISA
Libraries:
Instrument Control Toolbox
Alternative Configurations of VISA Block:
VISA Send | VISA Query | VISA Receive
Description
The VISA block communicates with a VISA resource. You can use this block to send or receive data, as well as query the VISA resource, depending on the configuration.
Ports
Input
Input — Data to send
vector | matrix | array
Data values to send from the block to your VISA resource, specified as a vector, matrix, or array.
Dependencies
To enable this port, set Send command type to Compose command from input data or Send input port data as is in the Send or Query tab.
Data Types: single | double | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64
Output
Data — Data received
vector | matrix | array
Data received by the block from your VISA resource, returned as a vector, matrix, or array.
Dependencies
To enable this port, set Use block to to Query instrument or Receive response in the Send or Query tab.
Data Types: single | double | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64
Status — Instrument status
1 | 0
Instrument status, returned as 1 or 0, where
1 represents success and 0 represents
failure.
Dependencies
To enable this port, set Action when error occurs to
Continue simulationin the Handle Error tab.
Data Types: double
Instrument error — Error message from instrument
string
Error message from instrument, returned as a string.
Dependencies
To enable this port, set Action when error occurs to
Continue simulationand select the Check instrument error parameter in the Handle Error tab.
Data Types: string
Parameters
To edit block parameters interactively, use the Property Inspector. From the Simulink® Toolstrip, on the Simulation tab, in the Prepare gallery, select Property Inspector.
Block parameters
Block sample time — Time interval between samples
-1 (default) | numeric
Sampling time of the block during the simulation. This is the rate at which the block is executed during simulation. For more information, see Timing in Hardware Interface Models.
Programmatic Use
To set the block parameter value programmatically, use
the set_param (Simulink) function.
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | SampleTime |
| Values: | "-1" (default) | number in quotes |
Example: set_param(gcb,"SampleTime","1")
Hardware Configuration
Select from resource listResource name — VISA resource name
available VISA resources
VISA resource on your machine that you want to connect to and communicate with. Each type of VISA interface has a different format. For more information, see ResourceName.
Dependencies
To enable this parameter, select the Select from resource list option from Select and configure hardware.
Programmatic Use
To set the block parameter value programmatically, use
the set_param (Simulink) function.
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | ResourceName |
| Values: | resource name |
Example: set_param(gcb,"ResourceName","ASRL4::INSTR")
Vendor — Instrument manufacturer
instrument manufacturer name
This parameter is read-only.
Instrument manufacturer. This parameter is empty if the VISA interface type does not provide information about the manufacturer.
Dependencies
To enable this parameter, select the Select from resource list option from Select and configure hardware.
Programmatic Use
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | VendorName |
| Values: | vendor name |
Example: get_param(gcb,"VendorName")
Model — Instrument model
instrument model name
This parameter is read-only.
Instrument model. This parameter is empty if the VISA interface type does not provide information about the model.
Dependencies
To enable this parameter, select the Select from resource list option from Select and configure hardware.
Programmatic Use
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | ModelName |
| Values: | model name |
Example: get_param(gcb,"ModelName")
Serial Number — Unique serial number associated with instrument
instrument serial number
This parameter is read-only.
Unique serial number associated with instrument. This parameter is empty if the VISA interface type does not provide information about the serial number.
Dependencies
To enable this parameter, select the Select from resource list option from Select and configure hardware.
Programmatic Use
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | SlNumber |
| Values: | serial number |
Example: get_param(gcb,"SlNumber")
VISA resource type — Type of VISA resource to configure
TCP/IP Socket (default) | TCP/IP HiSLIP | TCP/IP VXI-11
Type of VISA resource to manually configure to make a connection to. After you select a VISA resource type for the resource you want to connect to, you can specify the parameters for that resource and create a connection to it.
Dependencies
To enable this parameter, select the Configure new VISA resource option from Select and configure hardware.
Programmatic Use
To set the block parameter value programmatically, use
the set_param (Simulink) function.
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | Interface |
| Values: | "TCP/IP Socket" (default) | "TCP/IP HiSLIP" | "TCP/IP VXI-11" |
Example: set_param(gcb,"Interface","TCP/IP
VXI-11")
Board index — Board index to connect to
positive integer
Board index of VISA resource that you want to connect to. For VISA-TCP/IP resources, this is the index number of the network board associated with an instrument.
Dependencies
To enable this parameter, select the Configure new VISA resource option from Select and configure hardware.
Programmatic Use
To set the block parameter value programmatically, use
the set_param (Simulink) function.
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | BoardNumber |
| Values: | positive number in quotes |
Example: set_param(gcb,"BoardNumber","5")
IP address — IP address to connect to
IP address
IP address of VISA resource that you want to connect to. For VISA-TCP/IP resources, this is the TCP/IP address of the socket in dot-decimal notation.
Dependencies
To enable this parameter, select the Configure new VISA resource option from Select and configure hardware.
Programmatic Use
To set the block parameter value programmatically, use
the set_param (Simulink) function.
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | IPAddress |
| Values: | IP address in dot-decimal notation in quotes |
Example: set_param(gcb,"IPAddress","127.0.0.1")
Port number — Port number to use for connection
4880 (default) | positive integer
Port number that your VISA-TCP/IP resource is connected through, specified as a number between 1 and 65535, inclusive.
Dependencies
To enable this parameter, select the Configure new VISA resource option from Select and configure hardware.
To enable this parameter, VISA resource type must be
TCP/IP SocketorTCP/IP HiSLIP.
Programmatic Use
To set the block parameter value programmatically, use
the set_param (Simulink) function.
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | Port |
| Values: | "4880" (default) | positive number in quotes |
Example: set_param(gcb,"Port","80")
Device ID — ID of device to connect to
positive integer
Device ID number of the VISA-TCP/IP resource that you want to connect to.
Dependencies
To enable this parameter, select the Configure new VISA resource option from Select and configure hardware.
To enable this parameter, VISA resource type must be
TCP/IP HiSLIPorTCP/IP VXI-11.
Programmatic Use
To set the block parameter value programmatically, use
the set_param (Simulink) function.
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | DeviceID |
| Values: | positive number in quotes |
Example: set_param(gcb,"DeviceID","1")
Resource name — VISA resource name
VISA resource name
VISA resource on your machine that you want to connect to and communicate with. Each type of VISA interface has a different format. For more information, see ResourceName.
Dependencies
To enable this parameter, select the Specify resource name option from Select and configure hardware.
Programmatic Use
To set the block parameter value programmatically, use
the set_param (Simulink) function.
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | ResourceString |
| Values: | resource name in quotes |
Example: set_param(gcb,"ResourceString","GPIB0::5::INSTR")
EOI Mode — EOI mode
on (default) | off
Whether the EOI (end or identify) line is asserted at the end of a write operation.
Dependencies
To enable this parameter, select the Configure new VISA resource option from Select and configure hardware.
Programmatic Use
To set the block parameter value programmatically, use
the set_param (Simulink) function.
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | EOIMode |
| Values: | "on" (default) | "off" |
Example: set_param(gcb,"EOIMode","off")
Byte order — Sequential order of bytes
little-endian (default) | big-endian
Sequential order in which bytes are arranged into larger numerical values.
Dependencies
To enable this parameter, select the Configure new VISA resource or Specify resource name option from Select and configure hardware.
Programmatic Use
To set the block parameter value programmatically, use
the set_param (Simulink) function.
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | ByteOrder |
| Values: | "little-endian" (default) | "big-endian" |
Example: set_param(gcb,"ByteOrder","big-endian")
Read terminator — Terminator character for reading data
off (default) | LF | CR | CR/LF | 0 to 255
Terminator character for reading ASCII-terminated data, specified as
off, LF, CR,
CR/LF, or a number from 0 to 255, inclusive. When reading from
the remote host with a terminator value of CR/LF, the read
terminates on an occurrence of CR and LF
together. If the terminator value is off, read operations ignore
terminator characters.
Programmatic Use
To set the block parameter value programmatically, use
the set_param (Simulink) function.
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | ReadTerminator |
| Values: | "off" (default) | "LF" | "CR" | "CR/LF" | 0 to 255 in quotes |
Example: set_param(gcb,"ReadTerminator","CR")
Write terminator — Terminator character for writing data
LF (default) | CR | CR/LF | 0 to 255
Terminator character for writing ASCII-terminated data, specified as
LF, CR, CR/LF, or a number
from 0 to 255, inclusive. When writing to the remote host with a terminator value of
CR/LF, the write terminates by adding both CR
and LF.
Programmatic Use
To set the block parameter value programmatically, use
the set_param (Simulink) function.
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | WriteTerminator |
| Values: | "LF" (default) | "CR" | "CR/LF" | 0 to 255 in quotes |
Example: set_param(gcb,"WriteTerminator","CR")
Data bits — Number of bits to represent one character of data
8 (default) | 5 | 6 | 7
Number of data bits to transmit over your VISA resource.
Dependencies
To enable this parameter, select the Select from resource list option from Select and configure hardware.
Programmatic Use
To set the block parameter value programmatically, use
the set_param (Simulink) function.
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | DataBits |
| Values: | "8" (default) | "5" | "6" | "7" |
Example: set_param(gcb,"DataBits","5")
Parity — Parity bit type
none (default) | even | odd
Parity bit type added to data transmitted by your VISA resource. You can use this parameter to add a parity bit (also referred to as a check bit) to your data. Adding a parity bit to a string of binary code is a method of detecting errors in data transmission by ensuring that the total number of 1-bits is even or odd.
The value of the parity bit is determined by the number of 1s in a given set of bits and is set as follows.
| Parity Bit Type | Parity Bit Value | |
|---|---|---|
| If number of 1s is even | If number of 1s is odd | |
none | No parity bit set | No parity bit set |
even | 0 | 1 |
odd | 1 | 0 |
Dependencies
To enable this parameter, select the Select from resource list option from Select and configure hardware.
Programmatic Use
To set the block parameter value programmatically, use
the set_param (Simulink) function.
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | Parity |
| Values: | "none" (default) | "even" | "odd" |
Example: set_param(gcb,"Parity","even")
Stop bits — Pattern of bits that indicates the end of a character
1 (default) | positive scalar
Number of bits used to indicate the end of a byte. This parameter depends on the
value you select for the Data bits parameter. If you select data
bits 6, 7, or
8, the default value is 1 and the
other available choice is 2. If you select data bit
5, the default value is 1 and the
other available choice is 1.5.
Dependencies
To enable this parameter, select the Select from resource list option from Select and configure hardware.
Programmatic Use
To set the block parameter value programmatically, use
the set_param (Simulink) function.
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | StopBits |
| Values: | "1" (default) | positive scalar |
Example: set_param(gcb,"StopBits","2")
Flow control — Mode for managing data transmission rate
none (default) | hardware | software
Process of managing the rate of data transmission on your VISA resource. Select
none to have no flow control,
hardware to let your hardware determine the flow control,
or software to let your software determine the flow
control.
Dependencies
To enable this parameter, select the Select from resource list option from Select and configure hardware.
Programmatic Use
To set the block parameter value programmatically, use
the set_param (Simulink) function.
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | FlowControl |
| Values: | "none" (default) | "hardware" | "software" |
Example: set_param(gcb,"FlowControl","hardware")
Baud rate — Communication speed
9600 (default) | positive integer
Rate at which bits are transmitted for your VISA resource, in bits per second.
Dependencies
To enable this parameter, select the Select from resource list option from Select and configure hardware.
Programmatic Use
To set the block parameter value programmatically, use
the set_param (Simulink) function.
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | BaudRate |
| Values: | "9600" (default) | positive integer |
Example: set_param(gcb,"BaudRate",14400)
Timeout — Allowed time to complete operations
10 (default) | numeric
Allowed time in seconds to complete read and write operations.
Dependencies
To enable this parameter, select the Configure new VISA resource or Specify resource name option from Select and configure hardware.
Programmatic Use
To set the block parameter value programmatically, use
the set_param (Simulink) function.
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | TimeOut |
| Values: | 10 (default) | numeric |
Example: set_param(gcb,20)
Instrument identification command — SCPI command to send to your instrument
*IDN? (default) | SCPI command
Instrument identification SCPI command that you send to your instrument to see its response. Use this command to test that you are able to successfully establish a connection with your VISA resource.
Programmatic Use
To set the block parameter value programmatically, use
the set_param (Simulink) function.
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | TestCommand |
| Values: | "*IDN?" (default) | SCPI command in quotes |
Example: set_param(gcb,"TestCommand","*IDN?")
Validate and test connection — VISA resource connection verification
button
Click this button to send your VISA resource the SCPI command specified in Instrument identification command and return a value in Response.
Response — Instrument query response
string scalar
This parameter is read-only.
Instrument response to SCPI command specified in Instrument identification command. This field is populated after you click Validate and test connection.
Programmatic Use
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | Response |
| Values: | instrument response in quotes |
Example: get_param(gcb,"Response")
Instrument Initialization
Initialization commandsInitialization commands — SCPI command to send to your instrument
*RST;*CLS (default) | SCPI command
Instrument initialization SCPI commands that you send to your instrument. If you
have multiple commands, separate each with a semicolon (;). Each
command is sent one after another. These commands are executed once during simulation.
Click the Upload initialization commands and check instrument error
status button to send these commands to your instrument.
Dependencies
To enable this parameter, select the Initialization commands option from Send initialization commands.
Programmatic Use
To set the block parameter value programmatically, use
the set_param (Simulink) function.
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | SendString |
| Values: | "*RST;*CLS" (default) | SCPI command in quotes |
Example: set_param(gcb,"SendString","SOURce1:FUNCtion
SQU")
MATLAB Code — MATLAB® code to send to your instrument
MATLAB code
Instrument initialization MATLAB script to send to your instrument. When writing this code, use
visaObj as the VISA object that represents a connection to your
instrument. You can use the write function to send your
instrument ASCII initialization commands. Click the Upload initialization
commands and check instrument error status button to send this code to
your instrument.
Dependencies
To enable this parameter, select the MATLAB Code option from Send initialization commands.
Programmatic Use
To set the block parameter value programmatically, use
the set_param (Simulink) function.
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | ExecuteFunction |
| Values: | MATLAB code in quotes |
Example: set_param(gcb,"ExecuteFunction","write(visaObj,'SOURce1:FUNCtion
SQU')")
Instrument error check command — SCPI command to send to your instrument
SYSTem:ERRor? (default) | SCPI command
Instrument error check SCPI command that you send to your instrument to see its response. If you have specified any initialization SCPI commands or MATLAB code, this command is sent after them.
Programmatic Use
To set the block parameter value programmatically, use
the set_param (Simulink) function.
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | InitTestCommand |
| Values: | "SYSTem:ERRor?" (default) | SCPI command in quotes |
Example: set_param(gcb,"InitTestCommand","SYSTem:ERRor?")
Upload initialization commands and check instrument error status — Initialization and error check commands upload
button
Click this button to send your instrument any initialization commands that you specified in either Initialization commands or MATLAB Code, followed by the error check command specified in Instrument error check command. Depending on the status of the instrument, the instrument sends a response that is displayed in the Instrument status field.
Programmatic Use
To set the block parameter value programmatically, use
the set_param (Simulink) function.
To get the block parameter value
programmatically, use the get_param (Simulink) function.
Instrument status — Instrument initialization response
string scalar
This parameter is read-only.
Instrument response to the initialization commands specified in either Initialization commands or MATLAB Code. If the commands are accepted by the instrument this field displays a success message. If the instrument is in an error state, the status reflects that.
Programmatic Use
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | initStatus |
| Values: | instrument response in quotes |
Example: get_param(gcb,"initStatus")
Send or Query
Send commandSCPI Command — SCPI command to send to your instrument
SCPI command
Data to send to your instrument as a SCPI command. The SCPI command you send must be supported by your instrument.
Dependencies
To enable this parameter, select the SCPI command option from Send command type.
Programmatic Use
To set the block parameter value programmatically, use
the set_param (Simulink) function.
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | StaticCommand |
| Values: | SCPI command in quotes |
Example: set_param(gcb,"StaticCommand","SYST:PON:TIME?")
Binary command — Binary command to send to your instrument
binary values
Data to send to your instrument as binary data. The values must be between 0 and 256.
Dependencies
To enable this parameter, select the Binary option from Send command type.
Programmatic Use
To set the block parameter value programmatically, use
the set_param (Simulink) function.
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | StaticBinary |
| Values: | binary values in quotes |
Example: set_param(gcb,"StaticBinary","[83 89 83 84 58 80 79 78 58 84
73 77 69 63]")
Binblock data — Binblock command to send to your instrument
binblock values
Data to send to your instrument as a binblock.
Dependencies
To enable this parameter, select the Binblock option from Send command type.
Programmatic Use
To set the block parameter value programmatically, use
the set_param (Simulink) function.
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | BinBlockCommand |
| Values: | binblock values in quotes |
Example: set_param(gcb,"BinBlockCommand","[83 89 83 84 58 80 79 78 58
84 73 77 69 63]")
Data type — Size and format of each value
uint8 (default) | single | double | int8 | int16 | uint16 | int32 | uint32 | uint64 | int64
Data type to send data as to your instrument. This parameter determines the number of bytes to write for each value and the interpretation of those bytes as a MATLAB data type.
Dependencies
To enable this parameter, select the Binary or Binblock option from Send command type.
Programmatic Use
To set the block parameter value programmatically, use
the set_param (Simulink) function.
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | DataType |
| Values: | "uint8" (default) | "single" | "double" | "int8" | "int16" | "uint16" | "int32" | "uint32" | "int64" | "uint64" |
Example: set_param(gcb,"DataType","double")
Command header — SCPI command header to send with input port data
SCPI command
SCPI command header that is prepended to the input port data to send to your instrument.
Dependencies
To enable this parameter, select the Compose command from input data option from Send command type.
Programmatic Use
To set the block parameter value programmatically, use
the set_param (Simulink) function.
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | Header |
| Values: | SCPI command in quotes |
Example: set_param(gcb,"Header","SOUR1:VOLT")
Numeric format — Format of numeric data
Integer, signed (%d) (default) | Integer, unsigned (%u) | Floating-point (%f) | Characters (%c) | Enter numeric format
Format of the input port data. You can specify a format other than the options
provided if you select Enter numeric format.
Dependencies
To enable this parameter, select the Compose command from input data option from Send command type.
Programmatic Use
To set the block parameter value programmatically, use
the set_param (Simulink) function.
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | NumFormat |
| Values: | "Integer, signed (%d)" (default) | "Integer, unsigned (%u)" | "Floating-point (%f)" | "Characters (%c)" | "Enter numeric format" |
Example: set_param(gcb,"NumFormat","Characters
(%c)")
Enter numeric format — Custom format of numeric data
%2f (default) | numeric formats
Customized format of input port data.
Dependencies
To enable this parameter, select the
Enter numeric formatoption from Numeric format.
Programmatic Use
To set the block parameter value programmatically, use
the set_param (Simulink) function.
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | CustomNumericFormat |
| Values: | "%2f" (default) | numeric format in quotes |
Example: set_param(gcb,"CustomNumericFormat","%2f")
delimiter — Delimiting character
, (default)
Delimiting character that is appended to the numeric format to create the command string to send to your instrument.
Dependencies
To enable this parameter, select the Compose command from input data option from Send command type.
Programmatic Use
To set the block parameter value programmatically, use
the set_param (Simulink) function.
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | delimiter |
| Values: | "," (default) | delimiting character in quotes |
Example: set_param(gcb,"delimiter",",")
Data type — Size and format of each value
uint8 (default) | single | double | int8 | int16 | uint16 | int32 | uint32 | uint64 | int64
Data type to read data as from your instrument. This parameter determines the number of bytes to read for each value and the interpretation of those bytes as a MATLAB data type.
Dependencies
To enable this parameter, select the Read numeric data option from Data format.
Programmatic Use
To set the block parameter value programmatically, use
the set_param (Simulink) function.
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | ReceiveDatatype |
| Values: | "uint8" (default) | "single" | "double" | "int8" | "int16" | "uint16" | "int32" | "uint32" | "int64" | "uint64" |
Example: set_param(gcb,"ReceiveDatatype","double")
Determine data size automatically — Allow block to automatically detect data size
on (default) | off
Select this parameter to let the block determine the size of the received data. If you want to manually specify the data size, clear this parameter, and set the value of the Data size parameter accordingly.
Dependencies
To enable this parameter, select the Read string response and convert to numeric value or Binblock option from Data format.
Programmatic Use
To set the block parameter value programmatically, use
the set_param (Simulink) function.
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | AutoSize |
| Values: | "on" (default) | "off" |
Example: set_param(gcb,"AutoSize","off")
Data size — Number of values read
[1,1] (default) | [10000,1] (default) | numeric array
Manually specify the number of values that should be read at each simulation time step. Define the size as a multidimensional numeric array. The data size does not include the header or terminator values.
Dependencies
To enable this parameter, either:
Select the Read numeric data option from Data format. This case uses the
Sizeprogrammatic parameter with a default value of[1,1].Select the Read string response and convert to numeric value or Binblock option from Data format, and clear Determine data size automatically. This case uses the
OutputSizeprogrammatic parameter with a default value of[10000,1].
Programmatic Use
To set the block parameter value programmatically, use
the set_param (Simulink) function.
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | Size |
| Values: | "[1,1]" (default) |
Example: set_param(gcb,"Size","[1,2]")
| Parameter: | OutputSize |
| Values: | "[10000,1]" (default) |
Example: set_param(gcb,"OutputSize","[10000,2]")
Handle Error
Action when error occurs — Action to take when instrument errors
Stop simulation (default) | Continue simulation
Action the block should take when your instrument returns an error during
simulation. If you select Stop simulation, the diagnostic
viewer window displays the error. This error can be a visadev error
or an instrument error. If you select Continue simulation,
and a read error occurs, then the status bits are set to 1. If an instrument error
occurs, the instrument error port outputs the error message text as a string.
Programmatic Use
To set the block parameter value programmatically, use
the set_param (Simulink) function.
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | ActionWhenerror |
| Values: | "Stop simulation" (default) | "Continue simulation" |
Example: set_param(gcb,"ActionWhenerror","Continue
simulation")
Check instrument error — Output error message
off (default) | on
Select this option to output any error to the instrument error port of the block at each timestep using the SCPI command specified in Error check command.
Programmatic Use
To set the block parameter value programmatically, use
the set_param (Simulink) function.
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | Checkerror |
| Values: | "off" (default) | "on" |
Example: set_param(gcb,"Checkerror","on")
Error check command — SCPI command to send to your instrument
SYSTem:ERRor? (default) | SCPI command
Instrument error check SCPI command that you send to your instrument to see its response.
Dependencies
To enable this parameter, set the Check instrument error parameter to
on.
Programmatic Use
To set the block parameter value programmatically, use
the set_param (Simulink) function.
To get the block parameter value
programmatically, use the get_param (Simulink) function.
| Parameter: | CheckCommand |
| Values: | "SYSTem:ERRor?" (default) | SCPI command in quotes |
Example: set_param(gcb,"InitTestCommand","SYSTem:ERRor?")
Alternative Configurations
VISA Send — Send data to VISA resource
The VISA Send block differs from the VISA block in name only. This block is configured as the VISA Send block when you select the Send command option for Use block to in the Send or Query tab.
VISA Query — Query VISA resource
The VISA Query block differs from the VISA block in name only. This block is configured as the VISA Query block when you select the Query instrument option for Use block to in the Send or Query tab.
VISA Receive — Receive data from VISA resource
The VISA Receive block differs from the VISA block in name only. This block is configured as the VISA Receive block when you select the Receive response option for Use block to in the Send or Query tab.
Version History
Introduced in R2023b
MATLAB Command
You clicked a link that corresponds to this MATLAB command:
Run the command by entering it in the MATLAB Command Window. Web browsers do not support MATLAB commands.
Select a Web Site
Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select: .
You can also select a web site from the following list
How to Get Best Site Performance
Select the China site (in Chinese or English) for best site performance. Other MathWorks country sites are not optimized for visits from your location.
Americas
- América Latina (Español)
- Canada (English)
- United States (English)
Europe
- Belgium (English)
- Denmark (English)
- Deutschland (Deutsch)
- España (Español)
- Finland (English)
- France (Français)
- Ireland (English)
- Italia (Italiano)
- Luxembourg (English)
- Netherlands (English)
- Norway (English)
- Österreich (Deutsch)
- Portugal (English)
- Sweden (English)
- Switzerland
- United Kingdom (English)
Asia Pacific
- Australia (English)
- India (English)
- New Zealand (English)
- 中国
- 日本Japanese (日本語)
- 한국Korean (한국어)