User`s manual

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If the command should be sent to certain monitor only, the either of character ‘A’(41h) to ‘Z’(5Ah)
which is corresponding to monitor ID from No1 to No.26 should be set to this portion.
'0' (30h): Message sender is the controller
'C' (43h): Message Type is "Get parameter "
'0'-'6' (30h, 36h): Message length is 6 bytes
Message
STX (02h): Start of Message
'0'-'2' (30h, 32h): Operation code page number is 02h.
'7'-'9' (37h, 39h): Operation code is 79h (in the page 2)
ETX (03h): End of Message
Check code
BCC: Block Check Code
Refer to the section 4.5 “Check code” for a BCC calculation.
Delimiter
CR (0Dh): End of packet
Step 4. The monitor replies a temperature of selected sensor.
Header
SOH (01h): Start of Header
'0' (30h): Reserved
'0' (30h): Message receiver is the controller
'A' (41h): Monitor ID
This portion should depend on the monitor ID of Monitor.( ’A’(41h)-‘Z’(5Ah))
'D' (44h): Message Type is "Get parameter reply"
'1'-'2' (31h, 32h): Message length is 18 bytes
Message
STX (02h): Start of Message
'0'-'0' (30h, 30h): Result code. No error
'0'-'2' (30h, 32h): Operation code page number is 2
'7'-'9' (37h, 39h): Operation code is 79h (in the page 2)
'0'-'0' (30h, 30h): This operation is "Set parameter" type
'0'-'0'-'F'-'F' (30h, 30h, 46h, 46h): Maximum value.
'0'-'0'-'3'-'2' (30h, 30h, 33h, 32h): The temperature is 50 degrees Celsius.
Readout value is 2's complement.
ETX (03h): End of Message
Check code
BCC: Block Check Code
Refer to the section 4.5 “Check code” for a BCC calculation.
Delimiter
CR (0Dh): End of packet
Header Message Check code Delimiter
SOH-'0'-'0'-'A'-'D'-'1'-'2' STX-'0'-'0'-'0'-'2'-'7'-'9'-'0'-'0'
-'0'-'0'-'F'-'F'-'0'-'0'-'3'-'2'-ETX
BCC CR
Readout value
Temperature [Celsius]
Binary Hexadecimal
+125.0 0000 0000 0111 1101 007Dh
+ 25.0 0000 0000 0001 1001 0019h
+ 1.0 0000 0000 0000 0001 0001h
0 0000 0000 0000 0000 0000h
- 1.0 1111 1111 1111 1111 FFFFh
- 25.0 1111 1111 1110 0111 FFE7h
- 55.0 1111 1111 1100 1001 FFC9h