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10-4
[1] Read free memory size
Read free memory size.
[Write mode assignment]: None
[Communication format]
Command
Response
Ex. When reading the amount of free program memory (up to 7.5 k words). The data in the cells are
hexadecimal numbers.
Command
Response
[2] Monitor TMR, CNT, and MD
Read out the current value and attributed data from TMR, CNT, and MD in the specified area.
[Write mode assignment]: None
[Communication format]
Command
Response
(See page 10-3 for other symbols not described above)
[Ex.] Read the current value of TMR, CNT, and MD at addresses 000 to 002(8)
(The data in cells are in hexadecimal notation)
Command
Response
"+" "C" "L" "A" CMD SUB ATTR
"+" ACK "C" "L" "A" CMD SUB ATTR MODE
2B 43 4C 41 43 4D 00
"+" "C" "L" "A" CMD SUB ATTR
2B 00 43 4D 41 43 4D 00 07
ACK CMD SUB 7.5k word
Symbol Data Details
TA1
to
TAN
00
(H)
Not used as TMR,
CNT, or MD
Data 1 bytes
x
Number of reading
data
01
(H)
ZW/JW MD
02
(H)
ZW CNT
04
(H)
ZW TMR
08
(H)
DTMR (BCD)
09
(H)
DTMR (BIN)
0A
(H)
UTMR (BCD)
0B
(H)
UTMR (BIN)
0C
(H)
DCNT (BCD)
0D
(H)
DCNT (BIN)
0E
(H)
UCNT (BCD)
0F
(H)
UCNT (BIN)
Symbol Data Details
CMD 43
(H)
Function code
SUB 4D
(H)
Sub code
M
03
(H)
Program memory capacity: 3.5 k words
07
(H)
Program memory capacity: 7.5 k words
07
(H)
Program memory capacity: 15.5 k words
07
(H)
Program memory capacity: 31.5 k words
(Symbols other than the
left: See page 10-3.)
2B 43 4C 41 42 23 00 00 00 03 00
"+" "C" "L" "A" CMD SUB ATTR 000
(8)
3 pieces
2B 00 43 4C 41 42 23 00 00 00 03 00
ACK CMD SUB ATTR 000
(8)
3 pieces
65 38 32 60 14 73 08 0C 0E
No. 000
Current value:
3865
No. 001
Current value:
6032
No. 002
Current value:
7314
DTMR
000
(BCD)
DCNT
001
(BCD)
UCNT
002
(BCD)
"+" "C" "L" "A" CMD SUB ATTR TMR.NO. N
"+" ACK "C" "L" "A" CMD SUB ATTR TMR.NO. N
D1 DN TA1 TAN
Symbol Data Details
CMD 42
(H)
Function code
SUB 23
(H)
Sub code
TMR NO
When JW20/JW20H is
used: 000 to 777
(8)
TMR, CNT, MD number
(in order of 2 bytes data,
L and H.)
When JW30H is used:
0000 to 7777
(8)
(TMR, CNT, MD)
1000 to 1777
(8)
(TMR, CNT)
N 0000 to 0100
(8)
Number of reading data
(in order of 2 bytes data,
L and H.)
D1 to DN See the example
Reading current value
data
(Data 2 bytes x number
of reading data)