USER GUIDE FOR AMBIENT & PROCESS HUMIDITY & TEMPERATURE SENSOR WITH MODBUS OUTPUT MBRTU-ATH MBRTU-ATH-MN-EN-01 JUN-2021 This document is applied for the following products SKU MBRTU-ATH HW Ver. 2.5 FW Ver. 5.1 Item Code MBRTU-ATH-15-300 PROCESS HUMIDITY AND TEMPERATURE SENSOR, -40 .. +120 C, 300MM PROBE, ALL 304SS MATERIAL, SLIDING-FLANGE, RS485/MODBUSRTU, 7..48VDC SUPPLY, M12-M CONNECTOR 1. Functions Change Log HW Ver. FW Ver. Release Date Function Change 2.5 5.1 -2020 Innitial FW 2. Introduction MBRTU-ATH Humidity and Temperature Sensor utilizes digital temperature sensor delivers high accuracy measurement in range -40℃ to + 85℃ for ambient version or -40℃ to + 120℃ for Process version. Output is Modbus RTU for easily integrating with any PLC, controller, SCADA, BMS or IoT gateway. Digital sensor technology; High accuracy; Standard ModbusRTU output; Plug & Play. 3. Specification SENSOR SPECIFICATION for AMBIENT VERSION Sensor Digital type, factory calibrated, output both Humidity & Temperature values Humidity measuring range 0 .. 100 %RH Humidity accuracy +/- 3.0% Humidity resolution 0.1% Temperature measuring range -40 .. + 85 ℃ Temperature accuracy +/- 1.0 ℃ Temperature resolution 0.1 ℃ Sensor Filter PA (for integrated version) OR 20um Alloy sintered filter (for sensor with cable) SENSOR SPECIFICATION for PROCESS VERSION Sensor Digital type, factory calibrated, output both Humidity & Temperature values Humidity measuring range 0 .. 100 %RH Humidity accuracy +/- 1.8% RH typical in 30-70%RH range and 0-80 oC Humidity resolution 0.1% Temperature measuring range -40 .. + 120 ℃ Temperature accuracy +/- 0.5 ℃ in 0-100 ℃ range Temperature resolution 0.1 ℃ Sensor Filter 20um Alloy sintered filter (for sensor with cable) Sensor Probe 12mm diameter, 304SS with sliding flangeProbe length: 300mm, 600mm, 900mm Working pressure atmosphere SENSOR SPECIFICATION for OUTDOOR AMBIENT VERSION -ATHP Sensor Digital type, factory calibrated, output both Humidity & Temperature values Humidity measuring range 0 .. 100 %RH Humidity accuracy +/- 1.8% RH typical in 30-70%RH range and 0-80 oC Humidity resolution 0.1% Temperature measuring range -40 .. + 120 ℃ Temperature accuracy +/- 0.5 ℃ in 0-100 ℃ range Temperature resolution 0.1 ℃ Barometric Pressure range 300 .. 1200 mbar abs. (in -20 .. + 85 ℃) Pressure accuracy +/- 4 mbar (in full measurement range as above) Pressure resolution 0.1 mbar Outdoor protection IP67 electronics housing with Radiation shield with filter for sensor parts TRANSMITTER SPECIFICATION Communication Port RS485, ModbusRTU protocol, max 19200 baud Power supply 7..48VDC, avg. < 200mA Connector M12-male 4-pin Code A Working temperature -40 .. 85 ℃ Working humidity 0 .. 100% RH Housing 304SS Rating IP67 Dimension H100xD30 (without sensor cable) Mounting AMBIENT: SS304 L type bracket for wall mountingPROCESS: integral on probe Net weight <200 grams 4. Product components 5. Dimensions 6. Wiring 6.1 Electrical connector 6.2 Pinout Because the sensor uses an M12 electrical connector, please look closely at the pinouts of the M12 electrical connector as shown below. A - B: RS485/ModbusRTU Output PWR+: Power supply 7..48VDC GND: Ground, 0VDC 7. Configuration 7.1 Offline Configuration You can download Daviteq Modbus Configuration Tool with the following link: https://filerun.daviteq.com/wl/?id=yDOjE5d6kqFlGNVVlMdFg19Aad6aw0Hs Template File: https://filerun.daviteq.com/wl/?id=pTlOMMJNK1wF9JBszKybiupqoeWapD58 How to use the Modbus configuration software Unzip file and run file application "Daviteq Modbus Configuration Tool Version" Choose COM Port (the Port which is USB cable plugged in) Set the BaudRate: 9600, Parity: none Click “ Connect “ untill the Status displays “disconnected” to “connected“. It means the modbus sensor is being connected with computer; Next, we need to import the configuration file. Go to MENU: FILE / Import New / => select the template file. Step 3: Configure parameters of the sensor. 7.2 Memmap registers Modbus Register (DEC) Modbus Register (HEX) FuncCode (Read) FuncCode (Write) # of Registers Description Range Default Format Property Comment 2 2 3 4 Firmware version string Read 6 6 3 2 Hardware version string Read 9 9 3 2 Humidity  (prm1) 0..100% float Read Value from sensor. This value is parameter 1 of a wireless sensor node 11 B 3 1 uint16 Read Hi-Byte is error code, Lo-Byte is sensor type 12 C 3 2 Temperature  (prm 2) float Read Value from sensor. This value is parameter 2 of a wireless sensor node 14 E 3 1 Logic status of parameters uint8 Read Hi-Byte is Logic status of parameter 1, Lo-Byte is Logic status of parameter 2 15 F 3 2 Up-Timer 1 uint32 Read Total time when Hi-Byte of Logic status = 1 17 11 3 2 Down-Timer 1 uint32 Read Total time when Hi-Byte of Logic status = 0 19 13 3 2 Rising-Edge Counter 1 uint32 Read Counter value when Hi-Byte of Logic status changes from 0 to 1 21 15 3 2 Falling-Edge Counter 1 uint32 Read Counter value when Hi-Byte of Logic status changes from 1 to 0 23 17 3 2 Up-Timer 2 uint32 Read Total time when Lo-Byte of Logic status = 1 25 19 3 2 Down-Timer 2 uint32 Read Total time when Lo-Byte of Logic status = 0 27 1B 3 2 Rising-Edge Counter 2 uint32 Read Counter value when Lo-Byte of Logic status changes from 0 to 1 29 1D 3 2 Falling-Edge Counter 2 uint32 Read Counter value when Lo-Byte of Logic status changes from 1 to 0 256 100 3 16 1 Modbus address 1-247 1 uint16 Read/Write Modbus address of device 257 101 3 16 1 Modbus baudrate 0-1 0 uint16 Read/Write Baudrate: 0: 9600, 1: 19200 258 102 3 16 1 Modbus parity 0-2 0 uint16 Read/Write Parity: 0: none, 1: odd, 2: even 280 118 3 16 2 a1 1 float Read/Write Scale value of parameter_1 = (a1 * Raw sensor value of parameter_1) + b1. For sensor value scale 282 11A 3 16 2 b1 0 float Read/Write Scale value of parameter_1 = (a1 * Raw sensor value of parameter_1) + b1. For sensor value scale 284 11C 3 16 2 a2 1 float Read/Write Scale value of parameter_2 = (a2 * Raw sensor value of parameter_2) + b2. For sensor value scale 286 11E 3 16 2 b2 0 float Read/Write Scale value of parameter_2 = (a2 * Raw sensor value of parameter_2) + b2. For sensor value scale 290 122 3 16 2 High_threshold_1 float Read/Write High threshold value for parameter 1 292 124 3 16 2 Low_threshold_1 float Read/Write Low threshold value for parameter 1 294 126 3 16 2 High_threshold_2 float Read/Write High threshold value for parameter 2 296 128 3 16 2 Low_threshold_2 float Read/Write Low threshold value for parameter 2 8. Installation 8.1 Height adjustment The flange can be moved throughout the sensor body and can be fixed with the M2 countersunk hex nut. 8.2 Accessory installation The accessories are installed as shown 8.3 Filter Please avoid contaminating the sensor filter when installing to get the most accurate measurement 9. Applications 10. Support contacts Manufacturer Daviteq Technologies Inc No.11 Street 2G, Nam Hung Vuong Res., An Lac Ward, Binh Tan Dist., Ho Chi Minh City, Vietnam.Tel: +84-28-6268.2523/4 (ext.122) Email: info@daviteq.com | www.daviteq.com