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2800-2071 Field display for serial communication

2800-2071 Field display for serial communication
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2800-2071 Field display for serial communication - 1

Max. distancies: Number of displays in one loop: Data Addresses: Baud rate: General: Display Digit height Operating temp. Power supply Terminals Case material Case protection Weight • Serial inputs RS-232 and RS-485 • 6-digit processor-based LED display • Digit height 20 mm • Input galvanically isolated • Wide power supply range 85..240 VAC or 12..32 VDC / 24 VAC • Case protection IP65 The field display 2071 is designed for serial communication. It uses the simple Nokeval SCL protocol where only the address, value and check sum are sent. The display has both the serial inputs RS-232 and RS-485 as a standard. The serial bus is galvanically isolated from the processor and the power supply. In the configuration mode you can set the address, baud rate and the type of number value that you want to appear on the display after power connection. In industrial environments use of the addressable serial signal RS-485 is always recommended. 31 displays can be connected to one bus and by using a serial data converter (721R), another 31 displays can be added on. The maximum distance of the bus is 1 km. Serial input RS-232 only accepts one display connected to the bus the maximum distance being 15 m. The display has large 20-mm-high red LED digits, the readability of which is about 10 metres. Case protection rating is IP65. The display can be mounted onto a wall with or without the mounting brackets (removable) at the corners. The field display is part of the wide and flexible indicator series 2000 and is easy to modify by changing input cards for different kinds of sensors, such as temperature sensors, pulse sensors, serial inputs etc. The modification does not require any calibration. All the input and output cards of the series 2000 are available. Each display type has its own datasheet. The display is also available as a panelmeter, model 2071. Technical specifications: serial signal RS-485 and RS-232, selection with terminal connections, galvanically isolated 1000 m with RS-485 20 m with RS-232 1 with RS-232; 1-31 with RS-485 8 characters, 1 stop, no parity 0...99 300, 600, 1200, 2400, 4800, 9600 and 19200 baud 6 digits, bright red LED, brightness selectable 20 mm -20..+55 °C 85...240 VAC or 12..32 VDC/ 24VAC removable, wire 2,5 mm2 polycarbonate, colour light grey IP65 600 g Type Serial output card RS-232/485 Power supply 230VAC or 12..32 VDC/ 24 VAC

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2800-2071 Field display for serial communication - 2

Communication parameters Baud rate: 300, 1200, 2400, 4800, 9600 or 19200 8 data bits, None parity, 1 stop bit. Protocols The panelmeter 2071 and the field display 2071 can be controlled by two alternative protocols: either Nokeval SCL or Ascii. The protocol is selected in the configuration menu. Ascii protocol is very simple and there is no address involved, so every display will show the same reading. A detailed presentation of Ascii protocol is included in the manuals of the instruments. SCL protocol The SCL command packet consists of the actual command added by some control bytes....

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