blueLog - SCADA Interface Guide

    General interface description

    The SCADA interface provides:
    - System values
    - Power Control setpoints
    - Plant values for realtime monitoring etc.

    How to activate the SCADA interface

    Make sure the blueLog has a SCADA-licence installed:



    Then please activate the SCADA interface:



    Interface communication settings

    Important Note: Only Modbus TCP is supported
    Modbus TCP Port 502: For all devices (inverter, meter, sensors, etc.)
    Modbus TCP Port 503: Only reserved for Trackers



    Allocation of devices (SCADA address)

    The values of each device are assigned to a specific client ID
    The client IDs from 100 - 247 are reserved for the SCADA interface

    The sort order is as following:

    1. Device type (order as in the frontend, see cockpit)
    2. Port (first DI/MI, then RS485, then Ethernet)
    3. Bus address (ascending)
    4. Virtual address (ascending)

    • The SCADA addresses are assigned automatically the first time the SCADA interface is activated.
    • If SCADA is deactivated and activated again, the SCADA addresses retain.
    • If the SCADA addresses are assigned automatically by pressing Reset SCADA address, the devices are simply counted from up to down.
    • Newly created devices do not initially get an automatically assigned SCADA address, you have to use Edit SCADA address to assign a address:


    Structure of the registers

    Here you'll find the latest Version of the SCADA interface register list (PDF)

    Overview:

    Type

    TCP port

    Register

    General values

    502

    40000 – 40741

    Inverters

    502

    41000 – 41999

    Sensors

    502

    42000 – 42306

    Meter

    502

    43000 – 43300

    String Combiner

    502

    44000 – 44030

    Tracker

    503

    45000 – 45010

    Data types

    We provide all common data types:

    Type

    Description

    Default value

    U16

    16 Bit Unsigned Integer

    0xFFFF

    U32

    32 Bit Unsigned Integer

    0xFFFFFFFF

    I16

    16 Bit Signed Integer

    0x8000

    I32

    32 Bit Signed Integer

    0x80000000

    F32

    32 Bit Float

    0x7FC00000

    String

    String, ASCII Encoding

    If not the whole field-length is used, the string is filled with 0x00 at the end.

    If a value (e.g., Manufacturer name) is not fitting inside the register, it will be hard-cut.

    0x00

    Factor & offset

    Specifies the factor by which the value must be multiplied, or which offset must be added to the value

    • First the factor, then the offset must be taken into account!

    Testing the SCADA interface with Modpoll / PLC software

    Example with Janitza UMG Meter on Adress 101:


    Polling the P_AC Value:


    Query:

    modpoll -t 4:float -r 43000 -a 101 -0 192.168.30.216

    Result:

    C:\modpoll>modpoll -t 4:float -r 43000 -a 101 -0 192.168.30.216
    modpoll 3.9 - FieldTalk(tm) Modbus(R) Master Simulator
    Copyright (c) 2002-2020 proconX Pty Ltd
    Visit https://www.modbusdriver.com for Modbus libraries and tools.
     
    Protocol configuration: MODBUS/TCP, FC3
    Slave configuration...: address = 101, start reference = 43000 (PDU), count = 1
    Communication.........: 192.168.30.216, port 502, t/o 1.00 s, poll rate 1000 ms
    Data type.............: 32-bit float, output (holding) register table
     
    -- Polling slave... (Ctrl-C to stop)
    [43000]: -9383.629883
    -- Polling slave... (Ctrl-C to stop)
    [43000]: -8760.450195
    -- Polling slave... (Ctrl-C to stop)
    [43000]: -8764.480469
    -- Polling slave... (Ctrl-C to stop)
    [43000]: -8817.830078
    -- Polling slave... (Ctrl-C to stop)
    Published