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10-3
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.
[Communication format, basic pattern]
Command
Response (normal)
- Response on error: See page 10-14.
Optional command Reference page
[1] Read free memory size 10-4
[2] Monitor TMR, CNT, and MD 10-4
[3] Reading PC mode 10-5
[4] Setting PC mode 10-5
[5] Reading system memory 10-6
[6] Writing system memory 10-6
[7] Reading date 10-7
[8] Setting date 10-7
[9] Reading time 10-8
[10] Setting time 10-8
[11] Correct clock time 10-9
[12] Monitor step status 10-9
[13] Read the optional parameters 10-10
[14] Set the optional parameters 10-10
[15] Read the special I/O parameters 10-11
[16] Set the special I/O parameters 10-11
[17] Set the secret function 10-12
[18] Release the secret function, register a password 10-12
[19] Check the secret status 10-13
"+" "C" "L" "A" CMD SUB ATTR C.TEXT
"+" ACK "C" "L" "A" CMD SUB ATTR C.TEXT
*1, *2, and *3
See each optional
command (10-4 to 10-13)
Symbol Data Details
"+" 2B
(H)
Optional command
"C" 43
(H)
SHARP manufacturer
Identification code
"L" 4C
(H)
"A" 41
(H)
Model code (PC)
CMD *1 Function code
SUB *2 Sub code
ATTR 00
(H)
Always set to 00
(H)
C.TEXT
*3
Assignment detail of
each optional code
R.TEXT
ACK 00
(H)
Response (when normal)
JW20/JW20H only
JW30H only