Sony BKM-FW50, Service Manual

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5-9
BKM-FW50
Response from BKM-FW50 to command
Enquiry answer (In case of abnormality)
No. Item Value Remarks
1 Header 0x70 The answer of an FWD series
protocol is used.
2 Answer 0x03 0x03: Command Canceled
3 CheckSum * 0x73 Checksum for detection of
data destruction
* Checksum: If the value of a sum total of 1 to 2 exceeds 255 (1 byte), the
data of 1 lower byte is effective.
Error answer (In case of abnormality)
No. Item Remarks
1 Header 0xE0: Answer
2 Answer * 1 0x00: No Function Error
0x01: Check Sum Error
0x02: Data Length Error
3 CheckSum * 2 0xXX
* 1 0x00: No Function Error A packet header, category, or function code is
not contained in this protocol.
0x01: Check Sum Error The checksum value of the received packet is
incorrect.
0x02: Data Length Error The data size of the received packet is
incorrect.
* 2 Checksum: If the value of a sum total of 1 to 2 exceeds
255 (1 byte), the data of 1 lower byte is
effective.
Enquiry answer (In case of normality)
No. Item Value Remarks
1 Header 0x70 The answer of an FWD series
protocol is used.
2 Answer 0x00 0x00: Command Completed
3 Length 0x03 Data size
4 Data1 0x20 Fixed
5 Data2 0xXX Command type (Refer to the
normal command list and data
command list.)
6 CheckSum * 0xXX Checksum for detection of
data destruction
* Checksum: If the value of a sum total of 1 to 5 exceeds 255 (1 byte), the
data of 1 lower byte is effective.
Data replay
No. Item Value Remarks
1 Header 0x70 The answer of an FWD series
protocol is used.
2 Answer 0x00 0x00: Command Completed
3 Length 0xXX Data size
4 Data1 0x10 Fixed
5 Data2 0xXX Data number
6 Data3 0xXX First data
: : : :
X Data(X _ 4) 0xXX X _ 6th data value
X + 1 CheckSum * 0xXX Checksum for detection of
data destruction
* Checksum: If the value of a sum total of 1 to X exceeds 255 (1 byte), the
data of 1 lower byte is effective.
Notification of data termination
No. Item Value Remarks
1 Header 0x70 The answer of an FWD series
protocol is used.
2 Answer 0x00 0x00: Command Completed
3 Length 0x03 Data size (Fixed)
4 Data1 0x20 Fixed
5 Data2 0xXX Command type (Refer to the
normal command list and data
command list.)
6 CheckSum * 0xXX Checksum for detection of
data destruction
* Checksum: If the value of a sum total of 1 to 5 exceeds 255 (1 byte), the
data of 1 lower byte is effective.
Data transmission to BKM-FW50
Control
No. Item Value Remarks
1 Header 0x8C The control of an LX1 protocol
is used.
2 Category 0xDX Command type 1
(Refer to the category list.)
3 Function 0xXX Command type 2
4 Length 0xXX Data size
0xff (maximum)
(Size of No. 5 to No. X
+
1)
5 Data1 0xXX Data number (from 0)
6 Data2 0xXX First data value
: : 0xXX :
X Data(X _ 4) 0xXX X _ 5th data value
X + 1 CheckSum * 0xXX Checksum for detection of
data destruction
*
Checksum: If the value of a sum total of 1 to X exceeds 255 (1 byte), the
data of 1 lower byte is effective.