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4 external i/o pin statuses (dio diagnosis), Communication functions – MITSUBISHI ELECTRIC MR-J2S- A User Manual

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14. COMMUNICATION FUNCTIONS

14.12.4 External I/O pin statuses (DIO diagnosis)

(1) External input pin status read

Read the ON/OFF statuses of the external input pins.

(a) Transmission

Transmit command [1][2] and data No. [4][0].

Command

Data No.

[1][2]

[4][0]

(b) Reply

The ON/OFF statuses of the input pins are sent back.

b31

b0

0: OFF

1: ON

b1

Command of each bit is transmitted to the master
station as hexadecimal data.

bit

External input pin

bit

External input pin

bit

External input pin

bit

External input pin

0

CN1B-16

8

CN1B-9

16

24

1

CN1B-17

9

17

25

2

CN1B-15

10

18

26

3

CN1B-5

11

19

27

4

CN1B-14

12

20

28

5

CN1A-8

13

21

29

6

CN1B-7

14

22

30

7

CN1B-8

15

23

31

(2) External output pin status read

Read the ON/OFF statuses of the external output pins.

(a) Transmission

Transmit command [1][2] and data No. [C][0].

Command

Data No.

[1][2]

[C][0]

(b) Reply

The slave station sends back the ON/OFF statuses of the output pins.

b31

b0

0: OFF

1: ON

b1

Command of each bit is transmitted to the master
station as hexadecimal data.

bit

External output pin

bit

External output pin

bit

External output pin

bit

External output pin

0

CN1A-19

8

16

24

1

CN1A-18

9

17

25

2

CN1B-19

10

18

26

3

CN1B-6

11

19

27

4

CN1B-4

12

20

28

5

CN1B-18

13

21

29

6

CN1A-14

14

22

30

7

15

23

31