The Modbus Organization
User Manual for TERACOM models including: TSM400-4-CP, Modbus CO2 and Pressure Sensor, TSM400-4-CP Modbus CO2 and Pressure Sensor
Teracom TSM400-4-CP | Delmation
Prodotti - SARC ITALIA Srl - Teracom
File Info : application/pdf, 5 Pages, 647.01KB
DocumentDocument1. Short description TSM400-4-CP is a multi-parameter sensor that supports MODBUS RTU protocol over the RS-485 interface. The sensor measures barometric pressure and CO2 concentration. MODBUS device integrates an advanced non-dispersive infrared sensing element (NDIR) for CO2 measurements. The measurement principle is based on the absorption of infra-red (IR) light with specific wavelengths by CO2 molecules. The CO2sensing element is realized with built-in humidity and temperature for better accuracy. Self-calibration is available for carbon dioxide measurements. It is done if the sensor is left in fresh (around 400 ppm CO2 concentration) air. The basic sensing element for barometric pressure is factory calibrated and it does not require any lifetime recalibration. MODBUS CO2 and pressure sensor TSH400-4-CP is housed in a slim plastic enclosure. The bottom part of the enclosure is suitable for installation on standard flush-mounted/cavity wall boxes ø68mm, with installation openings on 61 mm. 2. Features · LED indicator for status of communication; · Long-term stability based on digital signal processing; · Self-calibration on fresh air for CO2 measurements; · RS-485 interface carrying up to 32 nodes; · Changeable bitrate and other communication parameters; · Firmware update via the interface. 3. Applications · Indoor air quality (IAQ); · CO2 storage facilities leakage control; · Smart ventilation systems; · Restaurants and breweries CO2 level monitoring. 4. Specifications · Physical characteristics Dimensions: 81 x 81 x 30 mm Weight: 66 g · Environmental limits Operating temperature range: -20 to 60°C Operating relative humidity range: 5 to 95% (non-condensing) Storage temperature range: -20 to 60°C Storage relative humidity range: 5 to 95% (non-condensing) Ingress protection: IP20 · Power requirements Operating voltage range (including -15/+20% according to IEC 62368-1): 4.5 to 26 VDC Current consumption: 25 mA@5VDC (Peak: 150 mA@5VDC) · CO2 measurements Range: 400 to 5000 ppm Accuracy: ± (40 ppm + 5 %) Resolution: 1 ppm TSM400-4-CP_R1.0 June 2022 Page 2 · Pressure measurements Range: 10 to 1200 hPa Accuracy (min): ±1.5 (25°C, 750 hPa) Accuracy (max): ±2.5 (-20°C to + 85°C, 300 to 1100 hPa) Resolution: 1 hPa · Warranty Warranty period: 3 years 5. Pinout Pin 1-W +5÷30V GND A+ BTERM Description Not used Positive power supply Ground (negative) supply Line A+ of RS-485 Line B- of RS-485 For termination, connect to B- UTP wires color Brown/White Tracer Brown Blue/White Tracer Blue 6. Installation Two-Wire MODBUS definition according to modbus.org: "A MODBUS solution over a serial line should implement a "Two-Wire" electrical interface in accordance with EIA/TIA-485 standard. On such a "Two-Wire" topology, at any time one driver only has the right to transmit. In fact, a third conductor must also interconnect all the devices of the bus the common." Attention: For proper operation of the interface, terminators (120 ohms resistors) must be installed at both ends of the bus. The device has a built-in 120-ohm resistor and to terminate the line, "B-" and "TERM" must be shortened. A daisy-chained (linear) topology for multiple sensors should be used. UTP/FTP cables are mandatory for interconnection. TSM400-4-CP_R1.0 June 2022 Page 3 7. Installation tips The location and the mounting position of sensors have a direct effect on the accuracy of monitoring humidity and temperature. The tips below will ensure good measuring results: · Sensor shall be installed about 1.2-1.4 m above the floor; · To avoid solar radiation, the sensor should not be installed next to windows or directly in the sunlight; · Sensors shall be installed in a place with sufficient air circulation. TSM400-4-CP sensor is intended for installation on a cavity wall box with 68mm diameter and 61 mm screw spacing. 8. Status indicator The status of the device is shown by a single LED, located inside the box: · If the LED blinks for a period of 1 second, the sensor works properly; · If the LED blinks for a period of 3 seconds, there isn`t communication with the controller; · If the LED doesn`t blink, there isn`t a power supply. 9. Factory default settings Disconnect the sensor from the bus (switch off the power supply). Press and hold the "config" button. Don't release the button, connecting the sensor to the bus (switch on the power supply). The "status" LED will be ON for 3 seconds and after this will flash for 7 seconds. After the 10-th second the LED will be ON. Release the button. The sensor will restart with factory default settings. 10. Firmware update The firmware of the sensor can be updated with a Teracom controller which supports MODBUS RTU or MBRTU-Config software. For more details, ask your dealer. TSM400-4-CP_R1.0 June 2022 Page 4 11. Modbus address table Register name RS-485 address Baud rate* R/W R/W R/W FC 03/06 03/06 PDU Address (Decimal) 10 11 Logical Address (Decimal) 40011 40012 Offset (Decimal) 40001 40001 Data size 16-bit uns. integer 16-bit uns. integer Parity, data, stop bits * Data order R/W 03/06 12 R/W 03/06 13 40013 40014 40001 40001 16-bit uns. integer 16-bit uns. integer Sub-family number R 3 14 FW version R 3 15 Vendor URL R 3 16 Float test value (MSWF) R 3 82 Float test value (LSWF) R 3 84 Signed integer test value R 3 86 Signed integer test value R 3 87 (MSWF) Signed integer test value R 3 89 (LSWF) Unsigned integer test value R 3 91 Unsigned integer test value R 3 92 (MSWF) Unsigned integer test value R 3 94 (LSWF) 40015 40016 40017 40083 40085 40087 40088 40090 40092 40093 40095 40001 40001 40001 40001 40001 40001 40001 40001 40001 40001 40001 16-bit uns. integer 16-bit uns. integer 64 bytes UTF-8 32-bit float 32-bit float 16-bit sig. integer 32-bit sig. integer 32-bit sig. integer 16-bit uns. integer 32-bit uns. integer 32-bit uns. integer CO2, ppm Pressure, hPa R 3 106 R 3 108 40107 40109 40001 40001 32-bit float 32-bit float CO2, ppm Pressure, mmHg R 3 206 R 3 208 40207 40209 40001 40001 32-bit float 32-bit float CO2, ppm Pressure, hPa R 3 603 R 3 604 40604 40605 40001 40001 16-bit uns. integer 16-bit uns. integer CO2, ppm R 3 703 Pressure High, mmHg x 100 R 3 704 Pressure Low, mmHg x 100 R 3 705 40704 40705 40706 40001 40001 40001 16-bit uns. integer 16-bit uns. integer 16-bit uns. integer Default 1 19200 1 1 1 Valid values 1-247 2400, 4800, 9600, 19200, 38400, 57600 1=E81, 2=O81, 3=N81 1=MSWF (MSW, LSW) 2=LSWF (LSW, MSW) 0xC9 teracomsystems.com -9.9(0xC11E6666) -9.9(0xC11E6666) -999(0xFC19) -99999(0xFFFE7961) -99999(0xFFFE7961) 999(0x03E7) 99999(0x0001869F) 99999(0x0001869F) MSWF - Most significant word first - (bits 31 ... 16), (bits 15 ... 0); LSWF - Least significant word first - (bits 15 ... 0), (bits 31 ... 16); PDU address - Actual address bytes used in a Modbus Protocol Data unit A "NaN" value is returned for unavailable floating-point values (e.g., in case of measurement error) * The settings will take effect after restarting the device by power-off, power-on. 12. Recycling Recycle all applicable material. Do not dispose of with regular household refuse. TSM400-4-CP_R1.0 June 2022 Page 5