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Wall-mounted temperature transmitter with Output 4-20mA(THM100-02M-YC)

Wall-mounted temperature transmitter with Output 4-20mA(THM100-02M-YC)
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Wall-mounted temperature transmitter with Output 4-20mA(THM100-02M-YC) - 1

Wall-mounted temperature transmitter with Output RS485 (THM 100-02M-YC) Sending and Receiving Data Command Format storages, HVAC and various kinds of areas which are needed The sixth byte temperature decimal places high byte(0×00) The seventh byte temperature decimal places low byte The eighth byte CRCH---16 bits CRC check high byte try, environmental protection, medicine, hotel, food and logistic The fifth byte temperature integer bit low byte The seventh byte CRCL---16 bits CRC check low byte scientific research, post and communications, chemical indus- The fourth byte temperature integer bit high byte(0×00) The sixth byte data number (0×02)---(low byte) which makes it widely used in meteorology, national defense, The third byte data byte number (0×08)---return to 8 data bytes The fifth byte data number (0×00)---(high byte) range, high precision, fast response and long-term stability, The second byte function code (0×03) The fourth byte data starting address(0×02)---(low byte) Its major features are small size, light weight, wide measuring The first byte device address The third byte data starting address (0×00)---(high byte) epistatic machine system. The second byte function code (0×03)---(read holding registers) can reliably collect and distribute and control the signals with Slave returning terminal The first byte device address adopts the imported high quality digital integrated sensor . It Host sending terminal E.g. 01 03 00 00 00 02 CRCL CRCH The wall-mounted temperature transmitter with output RS485 The eighth byte CRCL--16 bits CRC check low byte The ninth byte CRCH---16 bits CRC check high byte to measure and control the temperature of the air. Technical data Operating voltage24VDC Operating environment Humidity Temperature calculation method 1.Determine the highest digits of temperature integer bits of low byte.when it equals to 0, it is positive temperature ; when it equals to 1, it Input SignalDS18B20 digital temperature sensor Measuring range-55 means negative temperature. It starts to calculate after choosing the highest digits of temperature integer bits of low byte contrary. 2.Temperature value =temperature integer bits after processing + temperature decimal places divided by 100 Output SignalRS-485 communication signal, Modbus RTU Nodes32 nodes(max) Physical Interface Information transmission starting bit 1 bit, data bit 8bits, parity check ,stop bit 1 bit Baud rate range 1200 2400 4800 9600 Device address range 1~32 Factory default baud rate 1200 address01 A Address, Baud rate setting use the accessary serial debugging software, pick ModbusRTU,choose check CRC16(ModbusRTU),input and display HEX format. Change parameter command format 00 16+Baud rate+Device Address E.g change Baud rate to 9600,device address is NO.32 ,debugging software Sending 00 16 96 20 Returning 00 16 04 96 20 CRCL CRCH Error ! No found reference source Among 00 16 changing command Note VCC--Power Supply + GND--Power Supply-/mARH--Humidity mA+ TH--Temperature mA+ 04 return to 4 bytes 20 device address setting NO.32 96 Baud rate 9600 CRCL 16 bits CRC Check low byte CRCH 16 bits CRC Check high byte Note It is necessary to know the current baud rate before changing. After changing, power on again. It works.

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