Chapter 3

External Control (Gate mode)

Aside from the GND and counter terminal, each channel has a gate terminal to connect to an external gate signal. The gate signal (high or low) can trigger the counter from start or stop counting. The gate mode can be among these three options, low, high or disabled (low means that counting starts when the gate signal is low. It stops once the gate signal becomes high)

Programmable Alarm Output

The ADAM-4080 module provides a configurable alarm for each counter. The ADAM-4080D provides high and low alarm functions for counter 0. When the counter reaches an alarm limit, it will trigger the built-in digital output of machine ON/OFF control. The alarm limits may be downloaded into the module's EEPROM by the host computer. The initial count value of ADAM-4080 module's counter can be configured in any values.

The alarm functions can be enabled or disabled remotely. When the alarm functions are enabled, digital output channels are used to indicate the alarm states. For ADAM-4080, digital output channel 0 equals to the alarm state of counter 0, and digital output channel 1 equals to the alarm state of counter 1. For ADAM-4080D, digital output channel 0 equals to the low alarm state of counter 0, and digital output channel 1 equals to the high alarm state of counter 0.

Every A/D conversion will be followed by a comparison of alarm limits. If the input value exceeds one of these limits, the corresponding alarm state is set to ON.

There are two alarm mode options, momentary and latching, for ADAM-4080D. If the alarm is in latching mode, the alarm will stay on even when the input value returns within the limits. An alarm in latching mode can be turned off by issuing a Clear Alarm command from the host computer. A latching alarm is cleared by the module when the opposite alarm is set. For example, the alarm is in latching mode and the high alarm is then turned ON. When the module receives a value that is lower than the low alarm limit, it will clear the high alarm and turn the low alarm ON.

When the alarm is in Momentary mode, the alarm will be turned OFF as soon as the input value returns within the limits.

The arrangement of coupling high and low alarm states with digital output lines may be utilized to build ON/OFF controllers that can operate without the host computer involvement.

Chapter 3 I/O Modules 3-73

Page 99 Page 101
Page 100
Image 100
Advantech ADAM 4000 user manual External Control Gate mode, Programmable Alarm Output
Page 99 Page 101

ADAM 4000 specifications

Advantech's ADAM 4000 series is a line of versatile distributed I/O devices designed to bridge the gap between field devices and control systems. Known for its robust design and flexible configurations, the ADAM 4000 series is ideally suited for various industrial applications, including process monitoring, automation control, and data acquisition.

One of the notable features of the ADAM 4000 series is its modular architecture. This flexibility allows users to customize their setup by selecting specific I/O modules tailored to their application needs. The series supports a wide range of input and output types, including analog, digital, and relay outputs, making it a comprehensive solution for monitoring and controlling various parameters in a system.

In terms of communication, the ADAM 4000 series boasts multiple connection options, including RS-232, RS-485, and Ethernet. These communication protocols ensure seamless integration with existing control systems and enhance the ability to deploy in various network configurations. Furthermore, the series supports several industrial protocols such as Modbus, enabling easy integration with SCADA systems or PLCs.

One of the standout technologies in the ADAM 4000 series is the use of advanced data acquisition methods. This allows users to capture precise data from sensors and other field devices, which can then be processed and analyzed to improve operational efficiency. The built-in diagnostics features help in quick troubleshooting, minimizing downtime and maintenance costs.

The ADAM 4000 devices are designed for rugged environments, featuring a wide operating temperature range and a high level of resistance to electromagnetic interference. This durability makes them suitable for various industrial conditions, from factory floors to remote monitoring stations.

Additionally, the ADAM.NET SDK provided by Advantech simplifies the development process for software applications. This toolkit allows engineers to build custom applications that effectively interact with the devices, thus enhancing the overall functionality and user experience.

In summary, the Advantech ADAM 4000 series stands out as a reliable and flexible solution for industrial automation needs. Its modular design, diverse communication protocols, advanced data acquisition capabilities, and rugged build quality make it an ideal choice for organizations looking to enhance their monitoring and control systems. Whether in manufacturing, energy management, or environmental monitoring, the ADAM 4000 series offers a robust foundation for any industrial application.
Top Page Image Contents