3 SPECIFICATIONS

MELSEC-Q

3.4.7A/D conversion completed flag (buffer memory address 10: Un\G10)

(1)When A/D conversion for the channels enabled for conversion is complete, the A/D conversion completed flag is set to 1. The A/D conversion completed flag (XE) is set to ON when the conversion for all A/D conversion enabled channels is complete.

(2)When the operating condition setting request (Y9) is set to ON, the flag returns to the default setting of 0 and changes to 1 when A/D conversion is complete.

(3)In the case of the Q64AD module, b4 to b7 (CH5 to CH8) are invalid.

b15

b14

b13

b12

b11

b10

b9

b8

b7

b6

b5

b4

b3

b2

b1

b0

0

0

0

0

0

0

0

0 CH8 CH7 CH6 CH5 CH4 CH3 CH2 CH1

For the Q64AD, information for b4 to b15 is fixed at 0,

1

: A/D conversion completed

0

: A/D conversion in

and for the Q68AD, information for b8 to b15 is fixed at 0.

 

progress or not used

 

 

Example

When A/D conversion is enabled for channels 1, 2 and 6 and all conversions for these channels are complete, 0023H (35) is stored in buffer-memory address 10 (Un\G10).

b15

0

b14

b13

b12

b11

b10

b9

b8

b7

b6

 

b5

b4

b3

b2

 

b1

b0

0

0

0

0

0

0

0

0

0

 

1

0

0

0

 

1

1 0023H (35)

 

 

 

 

 

 

 

CH8 CH7 CH6 CH5 CH4 CH3 CH2 CH1

0

 

 

 

0

 

 

 

 

2

 

 

 

 

3

 

 

3.4.8Digital output values (buffer memory addresses 11 to 18: Un\G11 to Un\G18)

(1)The digital output values after A/D conversion are stored in the buffer memory addresses from 11 to 18 (Un\G11 to Un\G18) for each channel.

(2)The digital output values are expressed with 16-bit signed binary values.

b15b14b13b12b11b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0

Data section

Resolution 1/400012 bits Resolution 1/12000, 1/16000 14 bits

For other than the data section and a signed bit, it becomes

1 for a negative (when b15 is 1) and 0 for a positive (when b15 is 0).

Signed bit

1:Negative

0:Positive

3 - 22

3 - 22

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Mitsubishi Electronics Q68ADI, Q68ADV, Q64AD user manual Conversion

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.