7 ONLINE MODULE CHANGE

MELSEC-Q

(2)Reference table for user range settings offset/gain values (buffer memory addresses 218 to 233: Un\G218 to 233)

Example: When the offset value and gain value of channel 1 are 1V and 5V, respectively, in the Q68ADV, the reference value of the CH1 user range settings offset value (buffer memory address 218: Un\G218) is approx. 8C46H and that of the CH1 user range settings gain value (buffer memory address 220: Un\G220) is approx. BD64H.

Offset/gain value

 

Reference value (Hexadecimal)

 

 

0V

Approx. 800CH

Voltage

 

1V

Approx. 8C46H

 

5V

Approx. BD38H

 

 

 

 

10V

Approx. FA64H

 

 

0mA

Approx. 800CH

Current

 

4mA

Approx. 8C46H

 

 

20mA

Approx. FA64H

7.5 Precautions for Online Module Change

The following are the precautions for online module change.

(1)Always perform an online module change in the correct procedure. A failure to do so can cause a malfunction or failure.

(2)If an online module change is made with the user range setting, the accuracy after that will fall to about less than three times of the accuracy before that. Re-set the offset/gain values as necessary.

7 - 31

7 - 31

Page 114
Image 114
Mitsubishi Electronics Q68ADI Precautions for Online Module Change, Reference value Hexadecimal, 10V Approx. FA64 H 0mA

Q68ADV, Q68ADI, Q64AD specifications

Mitsubishi Electronics, a renowned leader in automation technology, has developed advanced analog input modules that play a crucial role in numerous industrial applications. Among them, the Q64AD, Q68ADI, and Q68ADV models stand out with their impressive features and capabilities tailored for precise data acquisition and control.

The Q64AD module is designed for high-performance analog signal processing. It offers up to 16 channels of differential input, making it suitable for applications requiring multiple sensor readings simultaneously. The resolution of 16 bits enables accurate data capture, ensuring that subtle variations in process variables, such as temperature or pressure, are detectable. One of its key advantages is the high-speed sampling capability, allowing data collection at rates of up to 100 milliseconds per channel, essential for real-time monitoring in fast-paced environments.

In contrast, the Q68ADI model enhances the versatility of the analog input system. It includes built-in isolators, providing additional protection against noise and interference commonly found in industrial settings. This isolation feature improves the reliability of sensor readings, especially in harsh environments where electrical noise can impact performance. Furthermore, the Q68ADI supports both voltage and current input types, making it adaptable to various sensor configurations, such as thermocouples and RTDs, expanding its usability across different applications.

The Q68ADV module takes versatility a step further by integrating advanced diagnostic features. This model offers a range of additional functions, including built-in fault detection and self-diagnosis capabilities that identify issues before they escalate into significant problems. It also features temperature compensation and linearization algorithms, which enhance the accuracy of reading from thermocouples and other temperature sensors. The Q68ADV module is ideal for applications demanding high reliability and stringent performance standards, making it indispensable in industries like pharmaceuticals and food processing.

All three models are designed to seamlessly integrate with Mitsubishi's PLC systems, ensuring smooth communication and data exchange. They support various protocols, making them compatible with a wide range of devices and systems. Collectively, the Q64AD, Q68ADI, and Q68ADV modules exemplify Mitsubishi Electronics' commitment to delivering high-quality, reliable, and innovative solutions in industrial automation, empowering businesses to achieve greater efficiency and operational excellence.