The Modbus Organization
User Manual for TERACOM models including: TST320 2-Channel Thermocouple Module, TST320, 2-Channel Thermocouple Module, Thermocouple Module, Module
Teracom TST320 | Delmation
File Info : application/pdf, 5 Pages, 613.00KB
DocumentDocument1. Short description TST320 is a versatile and reliable solution for temperature monitoring and control, supporting two thermocouples. With its MODBUS RTU interface, it seamlessly integrates into industrial systems, enabling easy communication and data exchange with other devices. It offers precise temperature readings for various applications and industries, ensuring accurate process control and optimization. Its compact design and user-friendly interface make it a practical choice for industrial automation and monitoring needs. 2. Features · 24-bit ADC with DSP processing · Compatibility with all types of thermocouples · RS-485 interface supporting up to 63 nodes · Integrated 120-ohm termination resistor · LED indicator displaying communication status · Firmware update capability via the interface 3. Applications · Industrial temperature monitoring - Enables accurate temperature measurement in industrial processes, catering to diverse applications with various thermocouple types. · HVAC system control - Integrates precise temperature regulation for efficient heating and cooling in residential, commercial, and industrial HVAC systems. · Laboratory and research applications - Facilitates stable and accurate temperature monitoring in scientific experiments and research, including chemical reactions and material testing. 4. Specifications · Physical characteristics Dimensions: 35x86x59mm (2 module enclosure) Weight: 75g Mounting: On 35 mm DIN top-hat rail · Environmental limits Operating temperature range: -20 to 60°C Operating relative humidity range: 10 to 90% (non-condensing) Storage temperature range: -25 to 65°C Storage relative humidity range: 5 to 95% (non-condensing) Ingress protection: IP40 (connections IP20) · Power supply Operating voltage range (including -15/+20% according to IEC 62368-1): 5 to 30VDC Current consumption: 15mA@12V · Thermocouples Thermocouple types supported: J, K, T, N, E, B, R, and S Temperature resolution: 0.01° ADC conversation accuracy (max): ±0.1% CJC accuracy (max): ±0.19% Input conversion rate for both channels: 1 sample per second With DSP (Digital Signal Processing) over 76865 samples for low-pass filtering and 50/60Hz notch filtering Thermocouple break detection: Available · Interface Protocol: Modbus RTU Physical layer: RS-485 serial line Number of bus transceivers: up to 63 Bus cable: Twisted, shielded, 2×0.5mm² Response time 50ms Master response time-out Response time + Answer time The answer time depends on the number of bits and the baud rate. Connectors Type: 3.81mm pitch screwless pluggable for 28 to 16 (AWG) / 0.081 to 1.31 (mm²) wires · Isolation Maximum working isolation voltage: 1500Vrms · Warranty Warranty period: 3 years TST320-R1.0 August 2023 Page 2 5. Status indicator The device status is indicated through a single LED positioned behind the semitransparent front panel: · Steady blinking of the LED for 1 second indicates proper sensor functionality. · A 3-second blink pattern signals a lack of communication with the controller. · If the LED remains off, it indicates a lack of power supply to the device. 6. Pinout · 5-pins connector 1 +VDD (5 to 30) 2 GND 3 RS485+ 4 RS4855 Terminator · 6-pins connector 1 SGND (Shield) 2 TC23 TC2+ 4 TC15 TC1+ 6 SGND (Shield) 7. 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 for transmitting. In fact, a third conductor must also interconnect all the devices of the bus - the common." It is highly advisable to use a daisy-chain (linear) topology along with UTP/FTP cables when connecting multiple sensors. To ensure the interface functions correctly, terminators (120-ohm resistors) must be installed at both ends of the bus. The device comes equipped with a built-in 120-ohm resistor, and for bus termination, the terminals "485-" and "Term" should be shortened. TST320-R1.0 August 2023 Page 3 8. Factory default settings To reset the device to its factory default settings, follow these steps: · Disconnect the power supply. · Press and hold the "Setup" button. · While holding the button, reconnect the power supply. · The status LED will remain ON for 3 seconds, then flash for 7 seconds, and finally turn ON again. · Release the button. The device will restart with the factory default settings. 9. Firmware update The device's firmware can be updated either by a Teracom controller with MODBUS RTU support or through MBRTU-Update software. To activate the sensor's update mode, follow these steps: · Disconnect the sensor from the bus and disconnect the power supply. · Press and hold the "Setup" button. · While holding the button, reconnect the power supply without releasing the button. · The status LED will be ON for 3 seconds. If, within these 3 seconds, the button is released and pressed 3 times, the device will enter update mode. · In update mode, the status LED will remain ON continuously. Important: The sensor can only be updated when it is the only device on the bus. 10.Modbus address table Register name Holding registers RS-485 address PDU Logical decimal decimal R/W FC address address Data size R/W 3,6,16 10 40011 16-bit uns. integer Baud rate * Parity, data, stop bits * R/W 3,6,16 11 R/W 3,6,16 12 Data order Device code FW version Vendor URL Float test value (MSW) Float test value (LSW) Signed integer test value Signed integer test value (MSW) Signed integer test value (LSW) Unsigned integer test value Unsigned integer test value (MSW) Unsigned integer test value (LSW) TC1 temperature °C TC2 temperature °C TC1 min. temperature °C TC2 min. temperature °C TC1 max. temperature °C TC2 max. temperature °C TC1 temperature °F TC2 temperature °F TC1 min. temperature °F R/W 3,6,16 13 R 3 14 R 3 15 R 3 18 R 3 82 R 3 84 R 3 86 R 3 87 R 3 89 R 3 91 R 3 92 R 3 94 R 3 100 R 3 102 R 3 120 R 3 122 R 3 140 R 3 142 R 3 200 R 3 202 R 3 220 40012 40013 40014 40015 40016 40019 40083 40085 40087 40088 40090 40092 40093 40853 40101 40103 40121 40123 40141 40143 40201 40203 40221 16-bit uns. integer 16-bit uns. integer 16-bit uns. integer 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 32-bit float 32-bit float 32-bit float 32-bit float 32-bit float 32-bit float 32-bit float 32-bit float 32-bit float Default Valid values 1 19200 1 1 1 to 247 2400, 4800, 9600, 19200, 38400, 57600 1=E81, 2=O81, 3=N81 1=MSWF (MSW, LSW) 2=LSWF (LSW, MSW) 0x0101 teracomsystems.com 2 -9.9(0xC11E6666) 2 -9.9(0xC11E6666) 1 -999(0xFC19) 2 -99999(0xFFFE7961) 2 -99999(0xFFFE7961) 1 999(0x03E7) 2 99999(0x0001869F) 2 99999(0x0001869F) 2 2 2 2 2 2 2 2 2 TST320-R1.0 August 2023 Page 4 TC2 min. temperature °F R 3 222 40223 32-bit float 2 TC1 max. temperature °F R 3 240 40241 32-bit float 2 TC2 max. temperature °F R 3 242 40243 32-bit float 2 TC1 temperature °C x 10 R 3 400 40401 16-bit sig. integer 1 TC2 temperature °C x 10 R 3 401 40402 16-bit sig. integer 1 TC1 min. temperature °C x 10 R 3 420 40421 16-bit sig. integer 1 TC2 min. temperature °C x 10 R 3 421 40422 16-bit sig. integer 1 TC1 max. temperature °C x 10 R 3 440 40441 16-bit sig. integer 1 TC2 max. temperature °C x 10 R 3 441 40442 16-bit sig. integer 1 TC1 temperature °F x 10 R 3 500 40501 16-bit sig. integer 1 TC2 temperature °F x 10 R 3 501 40502 16-bit sig. integer 1 TC1 min. temperature °F x 10 R 3 520 40521 16-bit sig. integer 1 TC2 min. temperature °F x 10 R 3 521 40522 16-bit sig. integer 1 TC1 max. temperature °F x 10 R 3 540 40541 16-bit sig. integer 1 TC2 max. temperature °F x 10 R 3 541 40542 16-bit sig. integer 1 TC1 temperature °C x 100 R 3 600 40601 16-bit sig. integer 2 TC2 temperature °C x 100 R 3 602 40603 16-bit sig. integer 2 TC1 min. temperature °C x 100 R 3 620 40621 32-bit sig. integer 2 TC2 min. temperature °C x 100 R 3 622 40623 32-bit sig. integer 2 TC1 max. temperature °C x 100 R 3 640 40641 32-bit sig. integer 2 TC2 max. temperature °C x 100 R 3 642 40643 32-bit sig. integer 2 TC1 temperature °F x 100 R 3 700 40701 32-bit sig. integer 2 TC2 temperature °F x 100 R 3 702 40703 32-bit sig. integer 2 TC1 min. temperature °F x 100 R 3 720 40721 32-bit sig. integer 2 TC2 min. temperature °F x 100 R 3 722 40723 32-bit sig. integer 2 TC1 max. temperature °F x 100 R 3 740 40741 32-bit sig. integer 2 TC2 max. temperature °F x 100 R 3 742 TC1 type R/W 3,6 800 40743 32-bit sig. integer 2 40801 16-bit uns. integer 1 0=J type,1=K type,2=T type, 3=N type, 4=E type, 5=B type, 6=R type, 7=S type TC1 multiplier R/W 3,6,16 801 40802 32-bit float 2 TC1 offset TC2 type R/W 3,6,16 803 R/W 3,6 810 40804 32-bit float 2 40811 16-bit uns. integer 1 0=J type,1=K type,2=T type, 3=N type, 4=E type, 5=B type, 6=R type, 7=S type TC2 multiplier R/W 3,6,16 811 40812 32-bit float 2 TC2 offset R/W 3,6,16 813 40814 32-bit float 2 Reset min and max values R/W 3,6 1000 41001 16-bit uns. integer 1 * The settings will take effect after restarting the device by power off, power on. The shown logic decimal addresses are calculated with offsets 10001 (discrete inputs) and 40001 (holding registers). MSW - Most significant word first - (bits 31 ... 16), (bits 15 ... 0); LSW - Least significant word first - (bits 15 ... 0), (bits 31 ... 16); PDU address - Actual address bytes used in a Modbus Protocol Data unit; When TC is not available or in case of measurement error, for: - a floating-point, the returned value is "NaN"; - a 16-bit signed integer, the returned value is "-32768"(0x8000); - a 32-bit signed integer, the returned value is "-2147483648"(0x80000000). 11. Recycling Recycle all applicable material. Do not dispose of in the regular household refuse. TST320-R1.0 August 2023 Page 5