Standard Event Status Register ESR, Bit Name

2635A

Users Manual

For example, an IER byte of binary 10000000 (decimal 128) indicates Scan Complete. If the IEE register is set to binary 10000000 (using the command IEE 128), then a Scan Complete condition will cause the Logical OR gate to output a logic high. In a similar manner, parameters can be combined. An IER byte of binary 10000101 (decimal 133) and an IEE set to a corresponding binary 10000101 (using the command IEE 133), will cause the Logical OR gate to have a logic high output for any of three conditions: Scan Complete -or- Open Thermocouple -or- Alarm Limit Transition.

Other commands include IER?, which returns the decimal equivalent of the IER byte and then clears the register to zero, and IEE?, which returns the decimal equivalent of the IEE byte. The command *CLS will clear all event registers. (See Appendix E for an 8-bit binary-coded-decimal table.)

Bit

Name

ALT

TOB

OTC

CCB

Table 4-1. Instrument Event Register (IER)

Description

Alarm Limit Transition. Set high (1) when any measurement value has transitioned into or out of alarm. Alarms are defined through the front panel or the computer interface (ALARM_LIMIT). This bit is cleared when read with IER? and when alarms or review values are cleared.

Totalize Overflow. Set high (1) when the Totalizer overflows (65,535). This bit is cleared when read with IER? and when the Totalizer is zeroed from the front panel or set to some other non-overflow value (,65,535) with the computer interface TOTAL command.

Open Thermocouple. Set high (1) when open thermocouple checking is enabled (with TEMP_CONFIG command) and any thermocouple channel is measured with a source impedance greater than 1 to 4 kilohms.

Calibration Corrupted. Set high (1) when the instrument calibration data is corrupted. When a calibration data check shows a corruption of calibration data, the calibration alarm bit remains set in the Instrument Status Register until the instrument is recalibrated.

CNC

Configuration Corrupted. the instrument configuration stored in NVRAM has been found to be corrupted. The RAM CRC is no longer valid.

5,6

not used

SCB

Always set to 0.

Scan Complete. Set high (logic 1) when a measurement scan has been completed. This bit is cleared when read with IER?

NOTES

Whenever the Instrument Event Register is read, the condition bits are cleared.

This register is used in conjunction with the Instrument Event Enable Register to determine the conditions under which the Instrument Event Bit of the Status Byte is set.

Standard Event Status Register (ESR)

The inputs to the Standard Event Status Register (ESR) include Power On, Command Error, Execution Error, Device Dependent Error, Query Error and Operation Complete. Each input is described in Table 4-2. The output byte of the ESR is ANDed with the output byte of the corresponding Standard Event Status Enable (ESE) register. When there is logic high correlation between any of the bits of the ESR and ESE registers, the

4-16

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.

In terms of construction, the Fluke 2635A is built to withstand rigorous environments. It features a robust design that ensures reliability and durability, making it suitable for both laboratory settings and field operations. Furthermore, the device supports a wide temperature range, thus enabling usage in diverse conditions.

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.

Fluke 2635A user manual Standard Event Status Register ESR, Bit Name

Models: 2635A