Sony FWD-50PX3 Protocol Manual page 4

(c) Answer message
1 Control answer
No. Item
1 Header
*
2 Answer
3 Check Sum
* 0x00: Completed
Packet is correctly received and process
is also correctly completed.
0x01: Limit Over Packet is correctly received, but the data
value is over the upper limit.
0x02: Limit Under Packet is correctly received, but the data
value under the lower limit.
0x03: Command Canceled Packet is correctly received, but the data
value is not correct or the request cannot
be accepted in the current host state.
* Check Sum:
Sum total of 1 to X. Lower one-byte data
is validated when a value exceeds 255
(1byte).
2 Enquiry answer (Complete)
No. Item
1 Header
2 Answer
3 Return Data Size
4 Return Data1
: :
: :
X Return DataX
X+1 Check Sum
* 0x00: Completed
Packet is correctly received and process is also
correctly completed.
* Return Data:
Returns the read value.
* Check Sum:
Sum total of 1 to X. Lower one-byte data is validated
when a value exceeds 255 (1byte).
3 Enquiry answer (Command cancel)
No. Item
1 Header
2 Answer
3 Check Sum
0x03: Command Canceled Packet is correctly received, but the data
value is not correct or the request cannot
be accepted in the current host state.
2
Value
0x70: Answer
0x00: Completed
0x01: Limit Over
0x02: Limit Under
0x03: Command Canceled
0xXX
Value
0x70: Answer
0x00: Completed
0xXX
0xXX
0xXX
0xXX
0xXX
0xXX
Value
0x70: Answer
0x03: Command Canceled
0x73
4 Error answer
No. Item
1 Header
*
2 Answer
3 Check Sum
* 0x00: No Function Error
Packet header,category or function code are
not included in this protocol.
0x01: Check Sum Error Check sum value or received packet is not
correct.
0x02: Data Length Error Packet is correctly received,but the data size
is over the upper limit.
Value
0xE0: Answer
0x00: No Function Error
0x01: Check Sum Error
0x02: Data Length Error
0xXX
FWD-50PX3