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TEMP-485 RS-485 Temperature Sensor
Description
The Temp-485 device is a temperature sensor which communicates over the RS-485 bus. The measured temperature is transmitted over a simple text protocol in °C. Up to 26 sensors can be connected on a 4-wire bus. Two wires are used for the RS-485 bus, the other two to power the sensor. The RS-485 bus line can be as long as 1200 m.
Product
TEMP-485 User Manual >>	Temperature range -10°C to +85°C. Indication of communication and state of sensor with a LED indicator. RS-485 2-wire communication. Simple communication protocol. Temperature data obtained by request or data can be automaticaly sent on a timed preset interval between 1 and 5000 seconds Up to 26 on a single RS485 bus Jumper selection of address - a to z Power - +8V...+18V DC, protection against polarity reversal Power consumption - Usually 10 mA, max. Protection type - IP 20 External dimensions of the box - 71 x 71 x 27 mm Temperature sensor in probe 72mm x 8mm diameter
Description
The Temp-485 device is a temperature sensor which communicates over the RS-485 bus. The sensor is designed for indoors vertical wall mounting. The measured temperature is transmitted over a simple text protocol in °C. Up to 26 sensors of this kind or 32 sensors at all can be connected on a 4-wire bus. Two wires are used for the RS-485 bus, the other two to power the sensor. The sensors can be powered from an external independent power source and can be connected only with the remaining wires of the RS-485 bus. The RS-485 bus line can be as long as 1200 m. The sensor uses a semi-conductive element situated inside the metal rod to measure the temperature. The element measures with an accuracy of ± 0,5°C. The sensor is equipped with an indicator, which blinks to signalize the measurement of the temperature in progress. To minimize the heat losses from the power supply and to have more possibilities of powering the sensor is equipped with a switching power supply, which makes possible to connect the sensor with a wide range of voltage supplies. The sensor is equipped with a termination resistor for the RS-485 line, but the connection with it is controlled by the built-in jumper „RS485 Terminator“. It is necessary to insert this jumper only in the last sensor, where the RS-485 line ends.
Communication protocol
The sensors operate in a question-answer mode. The maximum response time is 50 ms. Communication bus - 2-wire RS-485 Range of addresses“A” ... “Z” (except „T“) and “a” ...“z” (25 + 26 addresses) Communication - ASCII, described below Response time - max. 50 ms for a command Speed- 9600 baud Data bits- 8 Parity - none Stop bits - 1 Temperature reading Temperature request - T<address>I for example send "TAI" Answer from sensor (all OK) *<address><temp><CR> *A+025.51C Answer from sensor (error) *<address>Err<CR> *AErr where <address> is a character from „A“... „Z“ with exception of „T“ <CR> is the 0xD or 13 decimal - Carriage Return <temp> has the format *A+025.5C or *A+025.55C
Optional Accessories
RS485 Converters A wide range of converters to enable you to create an RS485 network from either RS232, USB or Ethernet connections SC-101 Budget level RS232 to RS422/485 Converter SC-101-I Industrial RS232 to RS422/845. 3000V Isolation USB-101 Budget level USB to RS422/485 Converter USB-101-I Industrial USB to RS422/845. 3000V Isolation eNET-232 Budget level Ethernet to RS422/485 Converter eNET-432 - 2-port Ethernet to RS422/485 Converter eNET-P132W Wireless Lan 802.11 Ethernet to RS422/485 Converter
Software
DAQFactory SCADA Package Control and monitoring software DAQFactory can be used with eDAM 9000 units. DAQFactory can be used to create an opertor interface, with plant mimics, chart recorders, provide automatic control, PID loops, alarms and datalogging and reporting functions. chart displays, bar charts and dynamic images create an operator HMI on-line statistical analysis and full maths capability automation sequences provide process control capability easy-to-use, no programming knowledge required versions with image library, web-server, and much more More Information >>
ProfiLab-Expert - graphical programming software package for data acquisition and control applications Low cost graphical programming software package Optimised for data acquisition and control applications Wide range of control, display and maths function blocks. Programs are “written” by wiring function blocks together Create multi-page operator interfaces LED, numeric, meter, bar, chart , button, switches, panel controls Compile programs to executables without any run-time penalty Talk to the eDAM-9000 range via Modbus TCP More Information >>
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