Simex TRS-02a, Руководство пользователя, Страница: 13 / 16

User manual for - TEMPERATURE TRANSDUCER TRS-02a
1. Read of the measurement value, the device address = 01h:
ADDR FUNC REG H,L COUNT H,L CRC L,H
01 03 00 01 00 01 D5 CA
a) The answer (we assume that input signal is not out of range):
ADDR FUNC BYTE C DATA H,L CRC L,H
01 03 02 00 FF F8 04
DATA H, L - measurement value = 255 (25,5 °C) , no decimal point. Decimal point position
can be read from reg. 03h.
b) The answer (if an error occur):
ADDR FUNC ERROR CRC L,H
01 83 40 40 C0
ERROR - error code = 40h, bottom border of the measurement range is exceeded
2. Read of ID code
ADDR FUNC REG H,L COUNT H,L CRC L,H
01 03 00 21 00 01 D4 00
The answer:
ADDR FUNC BYTE C DATA H,L CRC L,H
01 03 02 00 76 39 A2
DATA - identification code (007676h)
3. Change of the device address from 1 to 2 (write to reg. 20h)
ADDR FUNC REG H,L DATA H,L CRC L,H
01 06 00 20 00 02 09 C1
DATA H - 0
DATA L - new device address (2)
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