NI SWITCH Scanning Configuration Attributes
- NISWITCH_ATTRIBUTE_CONTINUOUS_SCAN
- NISWITCH_ATTRIBUTE_MASTER_SLAVE_SCAN_ADVANCED_BUS
- NISWITCH_ATTRIBUTE_SCAN_DELAY
- NISWITCH_ATTRIBUTE_IS_WAITING_FOR_TRIG
- NISWITCH_ATTRIBUTE_IS_SCANNING
- NISWITCH_ATTRIBUTE_TRIGGER_MODE
- NISWITCH_ATTRIBUTE_PARSED_SCAN_LIST
- NISWITCH_ATTRIBUTE_TRIGGER_INPUT
- NISWITCH_ATTRIBUTE_SCAN_ADVANCED_POLARITY
- NISWITCH_ATTRIBUTE_SCAN_ADVANCED_OUTPUT
- NISWITCH_ATTRIBUTE_CABLED_MODULE_SCAN_ADVANCED_BUS
- NISWITCH_ATTRIBUTE_HANDSHAKING_INITIATION
- NISWITCH_ATTRIBUTE_MASTER_SLAVE_TRIGGER_BUS
- NISWITCH_ATTRIBUTE_CABLED_MODULE_TRIGGER_BUS
- NISWITCH_ATTRIBUTE_SCAN_LIST
- NISWITCH_ATTRIBUTE_DIGITAL_FILTER_ENABLE
- NISWITCH_ATTRIBUTE_TRIGGER_INPUT_POLARITY
- NISWITCH_ATTRIBUTE_SCAN_MODE
| Numeric Value | Data type |
Access | Applies to | Coercion | High Level Functions |
|---|---|---|---|---|---|
| 1150009 | ViInt32 | R/W | N/A | None | None |
This attribute has been deprecated and may be removed from a future release of NI-SWITCH. Use the niSwitch_RouteScanAdvancedOutput function instead.
NISWITCH_VAL_NONE
NISWITCH_VAL_TTL0
NISWITCH_VAL_TTL1
NISWITCH_VAL_TTL2
NISWITCH_VAL_TTL3
NISWITCH_VAL_TTL4
NISWITCH_VAL_TTL5
NISWITCH_VAL_TTL6
NISWITCH_VAL_TTL7
| Numeric Value | Data type |
Access | Applies to | Coercion | High Level Functions |
|---|---|---|---|---|---|
| 1150008 | ViInt32 | R/W | N/A | None | None |
This attribute has been deprecated and may be removed from a future release of NI-SWITCH. Use the niSwitch_RouteTriggerInput function instead.
NISWITCH_VAL_NONE
NISWITCH_VAL_TTL0
NISWITCH_VAL_TTL1
NISWITCH_VAL_TTL2
NISWITCH_VAL_TTL3
NISWITCH_VAL_TTL4
NISWITCH_VAL_TTL5
NISWITCH_VAL_TTL6
NISWITCH_VAL_TTL7
| Numeric Value | Data type |
Access | Applies to | Coercion | High Level Functions |
|---|---|---|---|---|---|
| 1250026 | ViBoolean | R/W | N/A | None | None |
When a switch is scanning, the switch can either stop scanning when the end of the scan (VI_FALSE) or continue scanning from the top of the scan list again (VI_TRUE).
Notice that if you set the scan to continuous (VI_TRUE), the Wait For Scan Complete operation will always time out and you must call Abort to stop the scan.
VI_TRUE
VI_FALSE
- niSwitch Properties
- Scanning
| Numeric Value | Data type |
Access | Applies to | Coercion | High Level Functions |
|---|---|---|---|---|---|
| 1150016 | ViBoolean | RO | N/A | None | None |
This attribute specifies whether to apply the pulse width filter to the Trigger Input. Set the property to TRUE to prevent the switch module from being triggered by pulses that are less than 150 ns on PXI trigger lines 0-7.
When this property is set to FALSE, noise on the PXI trigger lines might trigger the switch module. If the device triggering the switch module can send pulses greater than 150 ns, do not disable this property.
VI_TRUE
VI_FALSE
| Numeric Value | Data type |
Access | Applies to | Coercion | High Level Functions |
|---|---|---|---|---|---|
| 1150013 | ViInt32 | R/W | N/A | None | None |
- Handshaking
- niSwitch Properties
- Scanning
| Numeric Value | Data type |
Access | Applies to | Coercion | High Level Functions |
|---|---|---|---|---|---|
| 1150016 | ViBoolean | RW | N/A | None | None |
This attribute indicates whether the switch has completed the scan operation. If VI_TRUE, the switch module is currently scanning through the scan list (i.e. it is not in the Idle state). If VI_FALSE, the switch module is not currently scaning through the scan list (i.e. it is in the idle state). The value VI_TRUE indicates that the scan is complete.
VI_TRUE
VI_FALSE
- niSwitch Properties
- Scanning
| Numeric Value | Data type |
Access | Applies to | Coercion | High Level Functions |
|---|---|---|---|---|---|
| 1150004 | ViBoolean | RO | N/A | None | None |
In a scan list, a semicolon (;) is used to indicate that at that point in the scan list, the scan engine should pause until a trigger is received from the trigger input. If that trigger is user generated through either a hardware pulse or the Send SW Trigger operation, it is necessary for the user to know when the scan engine has reached such a state.
VI_TRUE
VI_FALSE
- niSwitch_ConfigureScanList
- niSwitch Properties
- Scanning
| Numeric Value | Data type |
Access | Applies to | Coercion | High Level Functions |
|---|---|---|---|---|---|
| 1150012 | ViString | RO | N/A | None | None |
This attribute has been deprecated and may be removed from a future release of NI-SWITCH.
| Numeric Value | Data type |
Access | Applies to | Coercion | High Level Functions |
|---|---|---|---|---|---|
| 1150007 | ViInt32 | R/W | N/A | None | None |
This attribute has been deprecated and may be removed from a future release of NI-SWITCH. Use the niSwitch_RouteScanAdvancedOutput function instead.
NISWITCH_VAL_NONE
NISWITCH_VAL_TTL0
NISWITCH_VAL_TTL1
NISWITCH_VAL_TTL2
NISWITCH_VAL_TTL3
NISWITCH_VAL_TTL4
NISWITCH_VAL_TTL5
NISWITCH_VAL_TTL6
NISWITCH_VAL_TTL7
| Numeric Value | Data type |
Access | Applies to | Coercion | High Level Functions |
|---|---|---|---|---|---|
| 1250023 | ViInt32 | R/W | N/A | None | None |
This attribute specifies the method you want to use to notify another instrument that all signals going through the switch have settled following the processing of one entry in the scan list.
NISWITCH_VAL_NONE
NISWITCH_VAL_EXTERNAL
NISWITCH_VAL_TTL0
NISWITCH_VAL_TTL1
NISWITCH_VAL_TTL2
NISWITCH_VAL_TTL3
NISWITCH_VAL_TTL4
NISWITCH_VAL_TTL5
NISWITCH_VAL_TTL6
NISWITCH_VAL_TTL7
NISWITCH_VAL_PXI_STAR
NISWITCH_VAL_REARCONNECTOR
NISWITCH_VAL_REARCONNECTOR_MODULE1
NISWITCH_VAL_REARCONNECTOR_MODULE2
NISWITCH_VAL_REARCONNECTOR_MODULE3
NISWITCH_VAL_REARCONNECTOR_MODULE4
NISWITCH_VAL_REARCONNECTOR_MODULE5
NISWITCH_VAL_REARCONNECTOR_MODULE6
NISWITCH_VAL_REARCONNECTOR_MODULE7
NISWITCH_VAL_REARCONNECTOR_MODULE8
NISWITCH_VAL_REARCONNECTOR_MODULE9
NISWITCH_VAL_REARCONNECTOR_MODULE10
NISWITCH_VAL_REARCONNECTOR_MODULE11
NISWITCH_VAL_REARCONNECTOR_MODULE12
NISWITCH_VAL_FRONTCONNECTOR
NISWITCH_VAL_FRONTCONNECTOR_MODULE1
NISWITCH_VAL_FRONTCONNECTOR_MODULE2
NISWITCH_VAL_FRONTCONNECTOR_MODULE3
NISWITCH_VAL_FRONTCONNECTOR_MODULE4
NISWITCH_VAL_FRONTCONNECTOR_MODULE5
NISWITCH_VAL_FRONTCONNECTOR_MODULE6
NISWITCH_VAL_FRONTCONNECTOR_MODULE7
NISWITCH_VAL_FRONTCONNECTOR_MODULE8
NISWITCH_VAL_FRONTCONNECTOR_MODULE9
NISWITCH_VAL_FRONTCONNECTOR_MODULE10
NISWITCH_VAL_FRONTCONNECTOR_MODULE11
NISWITCH_VAL_FRONTCONNECTOR_MODULE12
 |
Notes - (0) NISWITCH_VAL_NONE The switch does not produce a Scan Advanced Output trigger. - (2) NISWITCH_VAL_EXTERNAL External Trigger. The switch produces the Scan Advanced Output trigger on the "trigger out" connector. - (111) NISWITCH_VAL_TTL0 The switch produces the Scan Advanced Output on the SCXI or PXI_TRIG0 line. - (112) NISWITCH_VAL_TTL1 The switch produces the Scan Advanced Output on the PXI_TRIG1 line. - (113) NISWITCH_VAL_TTL2 The switch produces the Scan Advanced Output on the SCXI or PXI_TRIG2 line. - (114) NISWITCH_VAL_TTL3 The switch produces the Scan Advanced Output on the PXI_TRIG3 line. - (115) NISWITCH_VAL_TTL4 The switch produces the Scan Advanced Output on the PXI_TRIG4 line. - (116) NISWITCH_VAL_TTL5 The switch produces the Scan Advanced Output on the PXI_TRIG5 line. - (117) NISWITCH_VAL_TTL6 The switch produces the Scan Advanced Output on the PXI_TRIG6 line. - (118) NISWITCH_VAL_TTL7 The switch produces the Scan Advanced Output on the PXI_TRIG7 line. - (125) NISWITCH_VAL_PXI_STAR The switch produces the Scan Advanced Output on the PXI STAR trigger bus. - (1001) NISWITCH_VAL_FRONTCONNECTOR This indicates that the switch will send its SCANNER ADVANCED output to the front connector. When using SCXI switches as scanners, all the devices that are part of the scanner will send their SCANNER ADVANCED output to their respective front connectors. |
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- niSwitch Properties
- Scanning
| Numeric Value | Data type |
Access | Applies to | Coercion | High Level Functions |
|---|---|---|---|---|---|
| 1150011 | ViInt32 | R/W | N/A | None | None |
NISWITCH_VAL_RISING_EDGE
NISWITCH_VAL_FALLING_EDGE
- niSwitch Properties
- Scanning
| Numeric Value | Data type |
Access | Applies to | Coercion | High Level Functions |
|---|---|---|---|---|---|
| 1250025 | ViReal64 | R/W | N/A | None | None |
This attribute specifies the minimum amount of time the switch waits before it asserts the scan advanced output trigger after opening or closing the switch. The switch always waits for debounce before asserting the trigger. The units are seconds.
|
Note PXI-2501/2503/2565/2590/2591 Users—the actual delay will always be the greater value of the settling time and the value you specify as the scan delay. |
|---|
- niSwitch Properties
- Scanning
| Numeric Value | Data type |
Access | Applies to | Coercion | High Level Functions |
|---|---|---|---|---|---|
| 1250020 | ViString | R/W | N/A | None | None |
This attribute contains a scan list)—a string that specifies channel connections and trigger conditions. The niSwitch_InitiateScan function makes or breaks connections and waits for triggers according to the instructions in the scan list. A scan list is comprised of channel names that you separate with special characters. These special characters determine the operations the scanner performs on the channels when it executes this scan list.
- To create a path between two channels, use the following character between the two channel names: -> (a dash followed by a '>' sign) Example: \CH1->CH2\ tells the switch to make a path from channel CH1 to channel CH2.
- To break or clear a path, use the following character as a prefix before the path: ~ (tilde) Example: ~CH1->CH2\ tells the switch to break the path from channel CH1 to channel CH2.
- To tell the switch to wait for a trigger event, use the following character as a separator between paths: ; (semicolon) Example: \CH1->CH2;CH3->CH4\ tells the switch to make the path from channel CH1 to channel CH2, wait for a trigger, and then make the path from CH3 to CH4.
- To tell the switch module to create multiple paths as quickly as possible, use the & (ampersand) or && (double ampersand) as a separator between the paths. The & in 'CH0->CH1;CH2->CH3&CH4->CH5' instructs the scanner to make the path between channels CH0 and CH1, wait for a trigger, and then make the paths between channels CH2 and CH3 and between channels CH4 and CH5 in no particular order without waiting for settling or waiting for a trigger. If wait for settling is desired, replace & with &&. The && in 'CH0->CH1;CH2->CH3&&CH4->CH5' instructs the scanner to make the path between channels CH0 and CH1, wait for a trigger, and then make the path between channels CH2 and CH3, wait for settling, then make the path between channels CH4 and CH5.
Refer to Scan Lists) for additional information.
- niSwitch Properties
- Scan Lists
- Scanning
| Numeric Value | Data type |
Access | Applies to | Coercion | High Level Functions |
|---|---|---|---|---|---|
| 1250021 | ViInt32 | R/W | N/A | None | None |
This attribute specifies what happens to existing connections that conflict with the connections you make in a scan list. For example, if CH1 is already connected to CH2 and the scan list instructs the switch to connect CH1 to CH3, this attribute specifies what happens to the connection between CH1 and CH2. If the value of this attribute is NISWITCH_VAL_NONE, the switch takes no action on existing paths. If the value is NISWITCH_VAL_BREAK_BEFORE_MAKE, the switch breaks conflicting paths before making new ones. If the value is NISWITCH_VAL_BREAK_AFTER_MAKE, the switch breaks conflicting paths after making new ones. Most switches support only one of the possible values. In such cases, this attribute serves as an indicator of the device's behavior.
NISWITCH_VAL_NONE
NISWITCH_VAL_BREAK_BEFORE_MAKE
NISWITCH_VAL_BREAK_AFTER_MAKE
- niSwitch Properties
- Scanning
| Numeric Value | Data type |
Access | Applies to | Coercion | High Level Functions |
|---|---|---|---|---|---|
| 1150006 | ViInt32 | R/W | N/A | None | None |
This attribute has been deprecated and may be removed from a future release of NI-SWITCH. Use the niSwitch_RouteTriggerInput function instead.
NISWITCH_VAL_NONE
NISWITCH_VAL_TTL0
NISWITCH_VAL_TTL1
NISWITCH_VAL_TTL2
NISWITCH_VAL_TTL3
NISWITCH_VAL_TTL4
NISWITCH_VAL_TTL5
NISWITCH_VAL_TTL6
NISWITCH_VAL_TTL7
NISWITCH_VAL_FRONTCONNECTOR
| Numeric Value | Data type |
Access | Applies to | Coercion | High Level Functions |
|---|---|---|---|---|---|
| 1250022 | ViInt32 | R/W | N/A | None | None |
This attribute specifies the source of the trigger for which the switch can wait when processing a scan list. The switch waits for a trigger when it encounters a semicolon in a scan list. When the trigger occurs, the switch advances to the next entry in the scan list.
NISWITCH_VAL_IMMEDIATE
NISWITCH_VAL_EXTERNAL
NISWITCH_VAL_SOFTWARE_TRIG
NISWITCH_VAL_TTL0
NISWITCH_VAL_TTL1
NISWITCH_VAL_TTL2
NISWITCH_VAL_TTL3
NISWITCH_VAL_TTL4
NISWITCH_VAL_TTL5
NISWITCH_VAL_TTL6
NISWITCH_VAL_TTL7
NISWITCH_VAL_PXI_STAR
NISWITCH_VAL_REARCONNECTOR
NISWITCH_VAL_REARCONNECTOR_MODULE1
NISWITCH_VAL_REARCONNECTOR_MODULE2
NISWITCH_VAL_REARCONNECTOR_MODULE3
NISWITCH_VAL_REARCONNECTOR_MODULE4
NISWITCH_VAL_REARCONNECTOR_MODULE5
NISWITCH_VAL_REARCONNECTOR_MODULE6
NISWITCH_VAL_REARCONNECTOR_MODULE7
NISWITCH_VAL_REARCONNECTOR_MODULE8
NISWITCH_VAL_REARCONNECTOR_MODULE9
NISWITCH_VAL_REARCONNECTOR_MODULE10
NISWITCH_VAL_REARCONNECTOR_MODULE11
NISWITCH_VAL_REARCONNECTOR_MODULE12
NISWITCH_VAL_FRONTCONNECTOR
NISWITCH_VAL_FRONTCONNECTOR_MODULE1
NISWITCH_VAL_FRONTCONNECTOR_MODULE2
NISWITCH_VAL_FRONTCONNECTOR_MODULE3
NISWITCH_VAL_FRONTCONNECTOR_MODULE4
NISWITCH_VAL_FRONTCONNECTOR_MODULE5
NISWITCH_VAL_FRONTCONNECTOR_MODULE6
NISWITCH_VAL_FRONTCONNECTOR_MODULE7
NISWITCH_VAL_FRONTCONNECTOR_MODULE8
NISWITCH_VAL_FRONTCONNECTOR_MODULE9
NISWITCH_VAL_FRONTCONNECTOR_MODULE10
NISWITCH_VAL_FRONTCONNECTOR_MODULE11
NISWITCH_VAL_FRONTCONNECTOR_MODULE12
|
Notes - (1) NISWITCH_VAL_IMMEDIATE Immediate Trigger. The switch does not wait for a trigger before processing the next entry in the scan list. - (2) NISWITCH_VAL_EXTERNAL External Trigger. The switch waits until it receives a trigger from an external source through the "trigger in" connector. - (3) NISWITCH_VAL_SOFTWARE_TRIG The switch waits until you call the niSwitch_SendSWTrigger function. - (111) NISWITCH_VAL_TTL0 The switch waits until it receives a trigger on the SCXI or PXI_TRIG0 line before processing the next entry in the scan list. - (112) NISWITCH_VAL_TTL1 The switch waits until it receives a trigger on the PXI_TRIG1 line before processing the next entry in the scan list. - (113) NISWITCH_VAL_TTL2 The switch waits until it receives a trigger on the SCXI or PXI_TRIG2 line before processing the next entry in the scan list. - (114) NISWITCH_VAL_TTL3 The switch waits until it receives a trigger on the PXI_TRIG3 line before processing the next entry in the scan list. - (115) NISWITCH_VAL_TTL4 The switch waits until it receives a trigger on the PXI_TRIG4 line before processing the next entry in the scan list. - (116) NISWITCH_VAL_TTL5 The switch waits until it receives a trigger on the PXI_TRIG5 line before processing the next entry in the scan list. - (117) NISWITCH_VAL_TTL6 The switch waits until it receives a trigger on the PXI_TRIG6 line before processing the next entry in the scan list. - (118) NISWITCH_VAL_TTL7 The switch waits until it receives a trigger on the PXI_TRIG7 line before processing the next entry in the scan list. - (125) NISWITCH_VAL_PXI_STAR The switch waits until it receives a trigger on the PXI STAR trigger bus before processing the next entry in the scan list. - (1000) NISWITCH_VAL_REARCONNECTOR The switch waits until it receives a trigger on the Rear connector before processing the next entry in the scan list. This value is valid for SCXI scanners that consist of a single device. If more than one device is used, you must use niSwitch_RouteTriggerInput or niSwitch_RouteScanAdvancedOutput functions to route a trigger from the connector on another module to one of the TTL lines instead. - (1001) NISWITCH_VAL_FRONTCONNECTOR The switch waits until it receives a trigger on the front connector before processing the next entry in the scan list. When using SCXI scanners, this variable is valid for scanners that consist of a single device. If more than one device is used, you must use the niSwitch_RouteTriggerInput or niSwitch_RouteScanAdvancedOutput functions to route a trigger from the connector on another module to one of the TTL lines instead. |
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- niSwitch_ConfigureScanList
- niSwitch Properties
- Scanning
| Numeric Value | Data type |
Access | Applies to | Coercion | High Level Functions |
|---|---|---|---|---|---|
| 1150010 | ViInt32 | R/W | N/A | None | None |
Determines the behavior of the trigger input.
NISWITCH_VAL_RISING_EDGE
NISWITCH_VAL_FALLING_EDGE
- niSwitch Properties
- Scanning
| Numeric Value | Data type |
Access | Applies to | Coercion | High Level Functions |
|---|---|---|---|---|---|
| 1150005 | ViInt32 | R/W | N/A | None | None |
This attribute has been deprecated and may be removed from a future release of NI-SWITCH. Use the niSwitch_RouteTriggerInput and/or niSwitch_RouteScanAdvancedOutput functions instead.
NISWITCH_VAL_SINGLE
NISWITCH_VAL_MASTER
NISWITCH_VAL_SLAVE