42
・
Data length:
Defines the number of data words that are inserted after CMD2 (0x0-0xF).
・
CMD 2:
Is the specific command to the recorder or the command return message from
the recorder, respectively.
・
DATA:
The number of data words and their contents are defined by the CMD2 command.
・
CHECKSUM:
The sum of the data (D0-D7) contained in each data word, from CDM
1/DATA COUNT to the last data word before the checksum.
4-2-5.
Disk Control Protocol Command Format
MFPR-3100 provides dedicated protocol for the disk recorder control. The extended
disc control command format is described as follows. It consists of the Extend code
(0x3E), Data length, CMD 1, CMD 2, DATA and CHECKSUM.
If Data count is zero,
no data is transmitted. If it is not zero, the data corresponding to the existing values are
inserted between CMD2 and CHECKSUM.
0x3E
Data
length
CMD
1
CMD
2
DATA
1
DATA N
N=
Max255
CHECKSUM
・
CMD 1:
CMD 1 assigns the command to the following main function groups that serve to
define the function, and the transfer direction of the data words that follows.
CMD 1
Function
Transfer Direction
Controller---Recorder
0x32
System control
0x33
System control-Return message
0x34
Recorder control
0x35
Setup and selection control
0x36
Data request
0x37
Data request-Return message
・
Data length:
Defines the number of data words that are inserted after CMD2 (0x0-0xF).
・
CMD 2:
Is the specific command to the recorder or the command return message from
the recorder, respectively.
・
DATA:
The number of data words and their contents are defined by the CMD2 command.
・
CHECKSUM:
The sum of the data (D0-D7) contained in each data word, from CDM
1/DATA COUNT to the last data word before the checksum.