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8.1.4 TEMPERATURE PROBES READINGS
The values of the readings of the temperature probes installed in the heater can be read by the Input
Registers 0x07 inlet water temperature and 0x08, water outlet temperature.
Specifically, to read inlet water temperature, Input Register 0x07 is to be read.
07 04 00 07 00 01 80 6D
Where:
07 is the slave address.
04 is the function used. Read Input Registers.
00 07 is the address of the first Input Register to be read.
00 01 is the number of records to be read.
80 6D is the CRC.
Received response is:
07 04 02 00 12 B1 3D
Where:
07 is the slave address.
04 is the function used. Read Input Registers.
02 is the quantity of bytes received.
00 12 is the temperature received in degrees (hexadecimal). Equivalent to 18° in decimal.
B1 3D is the CRC.
To read outlet water temperature, Input Register 0x08 is to be read.
07 04 00 08 00 01 B0 6E
Where:
07 is the slave address.
04 is the function used. Read Input Registers.
00 08 is the address of the first Input Register to be read.
00 01 is the number of records to be read.
B0 6E is the CRC.
Received response is:
07 04 02 00 15 F0 FF
Where:
07 is the slave address.
04 is the function used. Read Input Registers.
02 is the quantity of bytes received.
00 15 is the temperature received in degrees (hexadecimal). Equivalent to 21° in decimal.
F0 FF is the CRC.
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