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SMI2-M three-color Modbus display

SKU: SMI2-M

The SMI2-M is a universal display unit for monitoring industrial processes. It has an RS485 interface and the measured values can be displayed up to four digits. Imagine streamlining multiple devices without the usual technical problems.

Main features of SMI2-M

  • Three-color seven-segment indicator (green\red\yellow)
  • RS-485 interface with galvanic isolation from power supply.
  • Supports Modbus RTU/ASCII protocols in Master/Slave/Spy mode.
  • Programming via MicroUSB.
  • Displaying values like INT, DINT, WORD, DWORD, REAL, STRING, Portrait , Time.
  • Standardised design and fits into a standard 22.5 mm borehole for signal lamps

LED colorModbus RTU/ASCII protocolsRS485 interfaceMaster/Slave/Spy modestandard 22.5 mm boreholeUSBpower supply 24 V DCIP65 rated enclosureCharacter height 14 mmAmbient temperature

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Product Description
    Details

    Functionality of SMI2-M:

    • Configurable byte/register order for all operating modes.
    • Displaying values like INT, DINT, WORD, DWORD, REAL, STRING, Portrait (bit mask of indicator segments), Time (value in the “xx:yy” format).
    • Customizable number of leading zeros and decimal places
    • Supports blinking and creeping modes.
    • Possibility of linear scaling of the obtained value.
    • Control of color, blinking and other parameters via Modbus registers.
    • The presence of a built-in logic mode for changing the color and blinking mode in case of values outside the specified range.
    • LED brightness control.
    • Supports Modbus RTU/ASCII protocols in Master/Slave/Spy modes.

    • Master - the indicator acts as a master device, polling another device and displaying the value of one of its parameters. This allows displaying data from a device that can only operate in slave mode such as TRM. The indicator's color changes and blinking are controlled by the indicator's built-in logic, as set by the user.
    • Slave - the indicator displays a value received from the master device (e.g. PLC or PR). The indicator's color changes and blinking can occur either by command from the master device (according to its program), or by the SMI2-М's built-in logic. Multiple indicators can be connected to one RS-485 bus.
    • Spy - mode allows the indicator to connect to the bus, where a master device is already present, and "listen in" on the traffic, waiting for requests or responses with specified parameters (device address, function code, register address). This enables the device to be used in existing systems where reconfiguration of the equipment is not possible. Another use case for this mode is synchronous data updating on multiple indicators using a broadcast from the master device to address 0. Each indicator is assigned an individual register number in the listened request, allowing each device to extract their own data from the broadcasted request.

    Parameter

    Meaning

    Frame

    Dimensions

    48×26×65,4 mm

    Ambient temperature

    -40…70 °C

    Protection class

    III

    IP Code

    front IP65, rear IP20

    Display

    Display type

    4-digit, 7-segment display

    Character height

    14 mm

    Display color

    Red\Green\Yellow

    Interface

    Interface

    RS-485 (2-wire bus)

    Protocols

    ModBus RTU / ASCII, akYtec

    Baud rate

    2.4...115.2 kBit/s

    Galvanic isolation

    Yes

    Configuration Interface

    MicroUSB

    Power supply

    Power supply

    24 (18...36) V DC

    Power consumption, max.

    1,5 W

    FEEDBACK
Additional Information
FAQ

    FAQ

    What software do I need to configure the SMI2? Do I need a specialized cable?

    To program this RS485 Display you have to use SMI2 Configurator.

    You can find it either on the product page or on the CD that is delivered together with the device.

    To connect the SMI2 to the PC you need a USB cable and a USB-RS485 interface converter, for example, the IC4 from akYtec.

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    I have successfully connected the SMI2 to my PC several times, but this time, an error message appeared. What should I check?

    If you receive an error message saying ‘Port could not be opened. The port ‘COMX’ does not exist.’, you should check the connection between the SMI2 and the PC. Check the wiring, maybe a wire is loose or not connected to the terminals.

    You may also encounter the following message:

    error message Configurator SMI2

    If a message like that appears, it means that the SMI2 and SMI2 Configurator have different network parameters. For a successful connection, they must be the same.

    Option 1:

    Open SMI2 Configurator, use Device > Port configuration and set all the parameters to the same as those of your device.

    Option 2:

    If you don’t know the SMI2’s network parameters for some reason, you can use the Factory Settings mode. This mode allows the device to temporary take factory settings without overwriting the previous ones.

    - Open SMI2 Configurator, use Device > Port configuration and click on the Use Factory Settings For All Parameters button:

    Use Factory Setting button Configurator SMI2

    - Activate the Factory Settings mode by pressing the RESET button on the device for longer than 2 s. If the flashing word ‘FACT’ appeared at the display, the factory settings have taken effect.

    Now, the SMI2 and your PC can be successfully connected. To resume the previous network parameters of the device, the RESET button must be pressed again for longer than 2 s.

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    Can I use the SMI2 with an Arduino board or a PLC from any company?
    Our SMI2 can be used with any PLC that has an RS485 port and supports the Modbus ASCII/RTU protocol.
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