6 PROGRAMMING

6.1.2 Programming example

Digital output value read processing

MELSEC-Q

X11

X0

X0E

0

 

 

Read

Module

A/D

digital

READY

conversion

values

 

completed

 

 

flag

Error code display and reset processing

X10 X0F 26

Error Error

reset flag signal

Y0F X0F 49

Error Error

reset flag request

52

MOV

D11

D101

 

CH1 Digital

 

output

 

MOV

D12

D102

 

CH2 Digital

 

output

 

MOV

D13

D103

 

CH3 Digital

 

output

 

BCD

D14

K3Y20

 

Error code

 

SET

Y0F

 

 

Error clear

 

 

request

 

RST

Y0F

 

 

Error clear

 

 

request

END

Transfer digital output values D11 to D13 read using automatic

refresh to D101 to D103 after A/D conversion is completed.

Output the error code to Y20 to Y2B by BCD code.

Clear the error code.

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Mitsubishi Electronics Q68ADI, Q68ADV, Q64AD user manual Programming example, Ready

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.

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