Ditel DC-20 User Manual
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Ditel DC-20 User Manual

Thermometer and hygrometer
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USER MANUAL
DC-20 and DC-21
Thermometer and hygrometer
1600K08J

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Summary of Contents for Ditel DC-20

  • Page 1 USER MANUAL DC-20 and DC-21 Thermometer and hygrometer 1600K08J...

  • Page 3: Table Of Contents

    Content INTRODUCTION AND GENERAL CHARACTERISTICS ................. 1-1 1.1. Characteristics of the DC-20 and DC-21 displays ................1-2 1.2. Temperature and humidity sensor characteristics................1-2 1.3. Weight of the displays........................1-3 1.4. Dimensions of the DC-20 and DC-21....................1-3 1.4.1.
  • Page 4 4.1.1. Displays DC-20/X. Read values from the display ..............4-2 4.1.2. Displays DC-21/X. Send values to the display ................. 4-2 4.2. PROTOCOL MODBUS RTU - ASCII for RS-485 ................4-4 4.3. PROTOCOL MODBUS RTU - Word for RS-485 ................4-6 4.4.

  • Page 5: Introduction And General Characteristics

    INTRODUCTION AND GENERAL CHARACTERISTICS 1. INTRODUCTION AND GENERAL CHARACTERISTICS Numerical displays DC-20 and DC.21 are displays for the accomplishment of the Real Decreto 1826/2009, in the section relative to the temperature and humidity displaying in the public access locals with air-conditioning.

  • Page 6: Characteristics Of The Dc-20 And Dc-21 Displays

    INTRODUCTION AND GENERAL CHARACTERISTICS CHAPTER 1 1.1. Characteristics of the DC-20 and DC-21 displays Supply Voltage........... 88 to 264 VAC 47 to 63Hz. Consumption DC-20S and DC-21S ..12VA. Consumption DC-20S and DC-21S ..24VA. Display ............7 segments, 100mm high + decimal point.

  • Page 7: Weight Of The Displays

    1.3. Weight of the displays. The weight of the DC-20S and DC-21S is 5kg. The weight of the DC-20D and DC-21D is 7kg. 1.4. Dimensions of the DC-20 and DC-21. 1.4.1. Dimensions of the DC-20S and DC-21S. °C Max. 21°C Min.

  • Page 8: Display Mounting

    Place the 2 upper screws, leaving their head outside for 4 mm. Hang the display using the upper-side zig-zag. Place the lower screws Tighten all the screws. Replace the methacrylate cover. The screws and plugs are provided with the display 4 Fixation Points Hanged: PARED 4 mm DC-20 and DC-21 operation manual...

  • Page 9: Mounting Of The Dc-20D And Dc-21D

    The power cables and the sensor can be fixed to the mounting elements without tightening them. IN ANY WAY THE POWER OR THE SENSOR CABLES CAN BE USED FOR HANGING THE DISPLAY DC-20 and DC-21 operation manual...

  • Page 11: Installation

    The degree of protection of displays DC-20 and DC-21 is IP41, meaning that they are protected against penetration by solid foreign objects of a diameter of about 1mm and against the vertical fall of water droplets.

  • Page 12: Serial Line Connection

    The temperature and humidity sensor should be placed at 1,7m high from the floor. Due to the fact that the display is expected to be in crowded places, it is recommended to protect the cable of the sensor using a tube. DC-20 and DC-21 operation manual...
  • Page 13 In case the sensor cable must be extended, the colours of the cables must be respected. The colour identification is = White MAR = Brown VER = Green AMA = Yellow The cable type must be YCY 4 x 0.22 shielded DC-20 and DC-21 operation manual...

  • Page 15: Operation

    "8", all of the digits with the value "0", all of the decimal points are lit up and finally the version code. From this point, the DC-20 displays show the active sensors (activated = 1, deactivated = 0) and then the current temperature and the humidity In the DC-21 displays, the version code is displayed until the first message with data is received.

  • Page 16: Modify Parameters Rs-485, Ethernet Or Wifi

    To increase the parameter value, press the “+” key. Select another parameter In order to select another parameter, the parameter number must be made to flash using the “*” key and then the new parameter may be selected using the “+” key. DC-20 and DC-21 operation manual...

  • Page 17: Rs-485 Parameters

    19200 Bauds 8 bits Even 4800 Bauds 7 bits 9600 Bauds 7 bits 19200 Bauds 7 bits 4800 Bauds 8 bits 9600 Bauds 8 bits 19200 Bauds 8 bits Table 1: RS-485 codes for configuration DC-20 and DC-21 operation manual...

  • Page 18: Parameter 3 For Rs-485: Sensor Control And Communication Protocol

    In the display that receives the data through serial line (DC-21), the sensor information must be disabled. 3.3.4. Parameter F: Exit menu Press the key “*” to exit the parameter menu. Before exiting the parameters are saved. DC-20 and DC-21 operation manual...

  • Page 19: Parameters Ethernet And Wifi

    During the load time, the digits “99” are flashing. When it has finished, the parameter 4 is displayed again. 3.4.5. Parameter F: Exit menu. Press the key “*” to exit the parameter menu. Before exiting the parameters are saved. DC-20 and DC-21 operation manual...

  • Page 21: Communcation Protocols

    The command VT is an order to the display to shoe temperature and humidity values that are sent. End of block: It is used to identify the complete arrival of the block. It is used the character “Carry return” (13d 0Dh) DC-20 and DC-21 operation manual...

  • Page 22: Displays Dc-20/X. Read Values From The Display

    COMMUNICATION PROTOCOLS CHAPTER 4 4.1.1. Displays DC-20/X. Read values from the display To read the current values of the temperature and humidity, the following message must be sent: Header Address Code End of block Characters High Carry return Decimal 80d 84d...
  • Page 23 56h 54h The address returned is the one of the display Example: Frame returned when data has been sent Header Address Code End of block Characters Carry return Decimal 86d 84d Hexadecimal 30h 34h 56h 54h DC-20 and DC-21 operation manual...

  • Page 24: Protocol Modbus Rtu - Ascii For Rs-485

    (20h) so the byte number is even. If the display detects an error in the received block, the error code with the following data code is sent Address. Error Error code Low CRC High CRC The possible errors are: 02 = CRC error. DC-20 and DC-21 operation manual...
  • Page 25 In the response message, the received code is repeated until the control code (V). If the display detects an error in the received block, the error code with the following data code is sent Addr. Error Error code Low CRC High CRC The possible errors are: 02 = CRC error. DC-20 and DC-21 operation manual...

  • Page 26: Protocol Modbus Rtu - Word For Rs-485

    High CRC Addr. H Addr. L Reg. H. Reg. L. If the block is correctly received, the display responds with the temperature value in 16- bit Word format. Remember that the temperature is multiplied per 10. DC-20 and DC-21 operation manual...
  • Page 27 Data Low CRC High CRC 00h 34h If there is an error in the reception, the display responds with an error detection block with the following data. Addr. Error Error code CRC low CRC high DC-20 and DC-21 operation manual...

  • Page 28: Tcp/Ip, Udp/Ip Protocol

    In protocol ModBus/TCP the characters PT are not returned Code Temperature Space Humidity End of Block Characters 24,7 Carry return Decimal 80d 84d 50d 52d 44d 55d 54d 51d Hexadecimal 50h 5h4 32h 34h 2Ch 37h 36h 33h DC-20 and DC-21 operation manual...

  • Page 29: Send Values To The Display. Displays Without Sensor

    Example with the values 23.6ºC temperature and 58% humidity. Code Temperature Space Humidity End of Block Characters 23,6 Carry return Decimal 86d 84d 50d 51d 44d 54d 53d 56d Hexadecimal 56h 54h 32h 33h 2Ch 36h 35h 38h DC-20 and DC-21 operation manual...

  • Page 30: Modbus/Tcp Protocol

    06h 18h 00h 00h 00h 06h 00h 02h 00h 02h Response from the display Number Number of Data Identifier Protocol Unit Function of bytes registers 06h 18h 00h 00h 00h 07h 00h CDh 00h 2Ah DC-20 and DC-21 operation manual...

  • Page 31: Send Temperature And Humidity

    Frame to send: Identifier Protocol Num. Bytes Unit Function Start address Num. registers 00h 32h 00h 00h 00h 06h 00h 02h 00h D3h Response from the display: The response from the display is the same block sent. DC-20 and DC-21 operation manual...
  • Page 32 The response from the display is the same frame received from the identifier until the number of registers. Identifier Protocol Number of Unit Function Start Number bytes address registers 00h 37h 00h 00h 00h 0Bh 00h 00h 00h 04h DC-20 and DC-21 operation manual...

  • Page 33: Ip Address. Ethernet Option

    To access the setup you must first select the unit clicking on the XPort-03 that you wish to modify. Then press Web Configuration and the GO key placed at the right side of IP address. DC-20 and DC-21 operation manual...

  • Page 34: Udp/Ip Configuration

    Remote Port = Port of the equipment that will be connected. Remote Host = IP address of the equipment that will be connected. Click OK in the bottom of the page. Click Apply Settings in the left menu. DC-20 and DC-21 operation manual...

  • Page 35: Ip Address. Wifi

    DB9 o SAP12 Hembra Hembra Ordenador Visualizador The configuration of the Hyperterminal must be:  Baud rate: 9600 Bauds  Data Bits: 8  No parity  Stop Bits: 1  Hardware flow control: None. DC-20 and DC-21 operation manual...
  • Page 36 4-16 COMMUNICATION PROTOCOLS CHAPTER 4 The attached Hyperterminal set up have been verified and work correctly, but any other set up may work also correctly. DC-20 and DC-21 operation manual...

  • Page 37: Accessing Wifi Module Configuration

    5– Keep pushed the lower case letter x before the display counters equals 0. Remain pushing until the following screen is displayed. The maximum delay since pushing the advance key (step 4) until to push x key is 10 seconds. DC-20 and DC-21 operation manual...
  • Page 38 4-18 COMMUNICATION PROTOCOLS CHAPTER 4 6– At this time you have 3 seconds to push the Intro key on your keyboard. 7– The following screen is shown. DC-20 and DC-21 operation manual...
  • Page 39 Example of Server Set up Ask your network administrator the IP and Gateway address. Example of WLAN Set up Ask your network administrator the correct values To exit select 8 (Exit without save) or 9 (Save and exit). DC-20 and DC-21 operation manual...

  • Page 40: Set Up Ip Address Using The Deviceinstaller

    If there are no network problems, the same screen for configuring an IP address should be displayed. See 4.1 “IP Address.” To access the setup you must first select the unit clicking on the XPort-03 that you wish to modify. DC-20 and DC-21 operation manual...
  • Page 41 Poligon Industrial Les Guixeres C/ Xarol 8C 08915 BADALONA España As the builder of the equipment of the DITEL brand: Model : DC-20 in all versions. Model: DC-21 in all versions. We declare under our sole responsibility that the aforementioned product complies with the following European directives: Directive: LVD 2006/95/CEE Low Voltage Directive.

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Dc-21

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