Computer Operations 4

Computer Interface Commands and Operation

Table 4-5. Command and Query Reference (cont)

DIO_LEVELS? Digital I/O State Query

Returns an integer between 0 and 255 that summarizes the logical state of the rear panel DIGITAL I/O lines 0 to 7. A logical 0 (low) means the line is asserted. Since the lines can be used as alarm outputs of digital inputs or outputs, the return represents the actual conditions at time of query. There are 256 possibilities, as shown in Appendix E.

 

Example: DIO_LEVELS? returns 145 [DIGITAL I/O lines 1, 2, 3, 5 and 6 are asserted

 

(logic low).]

 

 

 

 

 

 

 

 

DIR

Memory Card Files Directory

 

 

 

 

Print a formatted listing of files on the memory card. This includes number of files, bytes

 

used, and bytes free. While the directory is printing, all other operations in the

 

instrument are suspended. If hardware or software flow control stall this output, the

 

instrument waits for the output to be unstalled.

 

 

Example; DIR returns:

 

 

 

 

DAT00.HYD 826

07-21-1994

16:20

 

DAT01.HYD 1082

07-21-1994

16:50

 

SET00.HYD 730

07-21-1994

17:10

 

SET01 HYD 730

07-21-1994

18:30

 

4 FILE (S)

3368

BYTES

 

 

 

1030656

BYTES FREE

 

 

 

 

 

DO_LEVEL

Set Digital Output Level

 

 

 

 

Configures the eight rear panel DIGITAL I/O connector lines, I/O connector lines, I/O 0

 

to I/O 7.

 

 

 

DO_LEVEL <DO_line>,<DO_state> <DO_line> = (0 .. 7) <DO_state> = 1 0

The rear panel DIGITAL I/O connector has eight lines, 0 to 7. Each line can be assigned to an I/O function. With this command, the line may be set to a logical low (nominal +0.7V DC), or set to a logical high (nominal +5.0V DC). DIGITAL I/O lines are asserted while scanning. When scanning stops, the I/O lines set logic low remain low unless values have been cleared by a new DO_LEVEL command, REVIEW_CLR, or by changing any parameter on any channel. Since I/O lines are shared with the alarm outputs of channels 4 to 20, verify DO_LEVEL commands will not cause ambiguities. (See the ALARM_ASSOC_CLR command to disassociate an alarm with an I/o line.) If this command is entered during scanning while logging to the memory card, an Execution Error is generated.

Example: DO_LEVEL 4, 0 [Set I/o line 4 to a logical 0 (low).]

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Fluke 2635A user manual DIOLEVELS? Digital I/O State Query, Dir
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2635A specifications

The Fluke 2635A is a highly advanced multichannel data acquisition system designed for engineers and technicians requiring precision and versatility in their measurement tasks. This instrument excels in monitoring and capturing data from various sources, making it a valuable tool in laboratories, production environments, and field applications.

One of the standout features of the Fluke 2635A is its ability to support up to 20 measurement channels. Users can simultaneously monitor multiple signals, which is crucial for complex testing scenarios where numerous variables need to be tracked. The device is equipped with a 6.5-digit precision measurement capability that ensures high accuracy and resolution in readings. This level of precision is particularly beneficial in applications such as environmental monitoring, research and development, and industrial process control.

The unit incorporates a variety of measurement modes, including voltage, current, temperature, and resistance, making it exceptionally versatile. The Fluke 2635A not only handles standard signals but also integrates with various transducers, providing extensive compatibility for users engaged in diverse testing applications.

To enhance data management, the Fluke 2635A offers advanced data logging capabilities. Data can be stored internally or transferred to external devices for further analysis. The internal memory can accommodate extensive datasets, which can be crucial in long-term monitoring tasks. Integration with external software enables users to analyze and visualize data effectively, allowing for informed decision-making based on comprehensive results.

The user interface is designed for ease of use, featuring a large, bright LCD display that clearly presents measurements and status information. The device is also equipped with a simple navigation system, allowing users to switch between channels and measurement types without hassle.

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Overall, the Fluke 2635A is a powerful and flexible instrument that provides precise measurements across multiple channels, supporting a wide range of applications. Its advanced technology, combined with user-friendly features, makes it an essential tool for professionals in various fields. The combination of accuracy, flexibility, and durability solidifies its standing as a trusted choice for data acquisition and monitoring tasks.
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