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4.11 Digital Output:
The Digital Output is a 9600bps N 81 serial interface.
The RX is a 5V normal high input port.
The TX is a 5V normal high output port.
The command of Digital Output is list below.
RS232 command
Function
K(ASC 4BH)
Ask for model No.
H(ASC 48H)
Hold button
T(ASC 54H)
TIMER button
M(ASC 4DH)
AVG/MAX/MIN button
N(ASC 4EH)
Exit AVG/MAX/MIN mode
R(ASC 52H)
REL button
°C/°F
C(ASC 43H)
button
A(ASC 41H)
Inquire all encoded data
Command K:
Return 4 bytes. For example, when sends command "K" to meter,
it will return "3","0","3", ASCII(13) .
(0x13) represent T1,- 199.9°C, The total byte number should be
7+1+7+1+5+chr(13)=22Bytes
Command T:
Equivalent to one pushing on the HOLD button.
Command M:
Equivalent to one pushing on the HOLD AVG/MAX/
MIN button and no message is returned.
Type K J Thermometer
Remarks
Send 4 bytes
Send encoded 8 byte
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