Sharp JW-21MN manual Reading time, Setting time, 10-8

"+" ACK "C"

[9] Reading time

Read out time (hour, minute, second) of clock. However, when JW-21CU or JW-31CUH/H1 is used as PC, these PC do not have clock function and the read out data will be unsettled.

[Write mode assignment]: None

[Communication format]

Command "+" "C" "L" "A" CMD SUB ATTR

Response

"L

"A"

CMD SUB ATTR

H

M

S

Symbol	Data	Details
CMD	45(H)	Function code
SUB	A3(H)	Sub code	(Symbols other than the
H	00 to 23(H)	00 to 23 o'clock
			left: See page 10-3.)
M	00 to 59(H)	00 to 59 minutes
S	00 to 59(H)	00 to 59 seconds

[Example] Reading a time of 8 : 30 : 30 AM. (The data in cells are in hexadecimal notation)

Command

Response

2B

43

4C

41

45

A3

00

"+"

"C"

"L"

"A"

CMD

SUB

ATTR

2B

00

43

4C

41

45

A3

00

08

30

30

ACK

CMD

SUB

8:

30:

30AM

10

[10] Setting time

Set time (hour, minute, second) of clock. However, when JW-21CU or JW-31CUH/H1 is used as PC, these PC do not have clock function and date cannot be set.

[Write mode assignment]: 1 or 2

[Communication format]

Command

"+"

"C"

"L"

"A"

CMD

SUB

ATTR

H

M

S

CTRL

Response

"+"

ACK

"C"

"L"

"A"

CMD

SUB

ATTR

Symbol

Data

Details

CMD

45(H)

Function code

SUB

B3(H)

Sub code

H, M, S

Same as the "Reading out time" above.

00(H)

Start operation of the clock

01(H)

Stop operation of the clock

CTRL

02(H)

Reset digits lower than the second

08(H)

Correct 30 seconds (Round off 0 to

29 sec., and round up 30 to 59 sec.)

[Example] When the time is 13 : 30 : 00. (The data in cells are in hexadecimal notation)

Command	2B	43	4C	41	45	B3	00	13	30	00		00
	"+"	"C"	"L"	"A"	CMD	SUB	ATTR	13	30	00	At operation
Response
	2B	00	43	4C	41	45	B3	00
		ACK				CMD	SUB

10-8