Martel 306 Dataloger Dokumentacja Pobierz pdf (Strona 7)

MARTEL 306

GND

4.13 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 Remarks

K(ASC 4BH) Ask for model No. Return 4 bytes

A(ASC 41H) Inquire all encoded data Return encoded 10 byte

H(ASC 48H) Hold button

M(ASC 4DH) MAX/MIN button

N(ASC 4EH) Exit MAX/MIN mode

T(ASC 52H) TIME button

C(ASC 43H) C/F button

U(ASC 55H) Dump all memory of thermometer return 32768 bytes

P(ASC 50H) Load recorded data

•Command K:

Return 4 bytes. For example, when sending command "K" to the meter, it will return "3","0","6",

ASCII(13) .

•Command U:

Return 32,768 bytes .

•Command P:

Instead of returning all 32,768 bytes, only recorded data is returned .

•Command H:

Equivalent to pushing the HOLD button and no message is returned.

•Command M:

Equivalent to pushing the MAX/MIN button and no message is returned.

•Command N:

Equivalent to pushing and holding the MAX/MIN button for two seconds to exit MAX/MIN mode.

•Command T:

Equivalent to pushing the TIME button and no message is returned.

•Command C:

Equivalent to pushing the °C/°F button and no message is returned.

•Command A:

BYTE:

The first byte is the start byte , its value is 2.

BYTE:

bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0

C/F Low Bat Hold TIME MAX/MIN REC

bit 0: 1→recording mode, 0→not recording

bit 2 bit 1

0 0 →normal mode

0 1 →MAXIMUM mode

1 0 →MINIMUM mode

1 1 →calculate MAX/MIN in background mode .

1 2 3 4 5 6 7 8 9 10 11

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Martel 306 Dataloger Dokumentacja Strona 7

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