Specifications

* Data length : (12 Bit)
This is data length of data portion (unit:: byte).
Command :
This sets data length of data added to a command to send it.
( See each command description.)
Response :
This sets data length of data added to a response to send it.
( See each command description.)
CAUTION :
Data length is specified using total of 12 bits ( 0 - 4095) of 4 bits
of the 4th byte and 8 bits of the 5th byte.* The upper ranking 4 bits
of the 4th byte is model code.
* Data portion
This becomes data of data length specified in the data length portion.
Command :
This sets data added to a command to send it.
( See each command description.)
Response :
This sets data added to a response to send it.
( See each command description.)
* Checksum
This is lower ranking 8 bits of the sum total of the header and data
portions of one transmit and receive data frame.
4-2. Data portion of response
**********************************************************************
For ACK
This returns ACK without adding data portion to the command that does
not request data.
This returns ACK with adding data to the data portion for the command
that requests data.
For NAK
This adds a cause of not accepting the command to data portion to
return it.
(Example) Power On
Command:
02H 00H FFH F0H 00H CKS
NAK:
A2H 00H 01H 20H 02H DATA01 DATA02 CKS
Data Contents
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