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10-3 Optional commands
The JW-21MN optional commands are any commands not specified in the ME-NET specifications.
These are commands specific to the JW-21MN. The host computer may use these optional
commands for communication between JW-21MNs and PCs (JW20/JW20H/JW30H) with a JW-21MN
installed. The table below shows optional commands (1) to (19) for the JW-21MN.
Optional command
[1] Read free memory size
[2] Monitor TMR, CNT, and MD
[3] Reading PC mode
[4] Setting PC mode
[5] Reading system memory
[6] Writing system memory
[7] Reading date
[8] Setting date
[9] Reading time
[10] Setting time
[11] Correct clock time
[12] Monitor step status
[13] Read the optional parameters
[14] Set the optional parameters
[15] Read the special I/O parameters
[16] Set the special I/O parameters
[17] Set the secret function
[18] Release the secret function, register a password
[19] Check the secret status
[Communication format, basic pattern]
Command
"+"
"C"
Response (normal)
"+"
ACK
- Response on error: See page 10-14.
Symbol
Data
"+"
2B
"C"
43
"L"
4C
"A"
41
CMD
SUB
ATTR
00
C.TEXT
R.TEXT
ACK
00
"L"
"A"
CMD
SUB
"C"
"L"
"A"
CMD
Details
Optional command
(H)
SHARP manufacturer
(H)
Identification code
(H)
Model code (PC)
(H)
*1
Function code
*2
Sub code
Always set to 00
(H)
(H)
Assignment detail of
*3
each optional code
Response (when normal)
(H)
Reference page
10-4
10-4
10-5
10-5
10-6
10-6
10-7
10-7
10-8
10-8
10-9
10-9
10-10
10-10
10-11
10-11
10-12
10-12
10-13
ATTR
C.TEXT
SUB
ATTR
C.TEXT
*1, *2, and *3
See each optional
command (10-4 to 10-13)
10-3
JW20/JW20H only
JW30H only
10
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