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Modbus Master Protocol Configuration Section



This information applies to latest revision.

This driver is made by the two modules: modbus_driver.dll and modbus_master.exe
This driver maps modbus data formats to IEC data types using the following mapping:

Function readModbus_typeiec_type_read
3VT_I4M_IT_TB_1
3VT_UI4M_ME_TO_1
3VT_R4M_ME_TF_1
3VT_I2M_ME_TE_1
3VT_UI2M_ME_TQ_1
1VT_BOOLM_SP_TB_1
2VT_BOOLM_SP_TB_1


where

VT_I4 is a 32 bits signed integer
VT_UI4 is a 32 bits unsigned integer
VT_R4 is 32 bits float
VT_I2 is a 16 bits signed integer
VT_UI2 is a 16 bits unsigned integer
VT_BOOL is a bit

Step 1:


Creation of modbus protocol configuration database

Go to C:\scada\bin and run protocol_configurator.exe

For each device create a modbus database and a SCADA Unit.
A SCADA Unit corresponds to a SCADA line.

Example: For the device connected on line 1 create the database named modbus_database1.db and save it in C:\scada\project

For the device connected on line 2 create the database named modbus_database2.db and so on

Line 1 corresponds with the first Unit created, line 2 with the second Unit created and so on

mdb_database01.png
Create modbus_database1.db
mdb_database02.png
Select the import table menu. Import modbus_table.csv
mdb_database03.png
Imported modbus_table.csv

Step 2:


Creation of the new SCADA points

1 - Select the menu: Configure\Configure Units

2 - Press button New

3 - Fill in the edit field Name: MDB

4 - Select Type modbus_driver, flag Unit Enabled and press Configure button

5 - Fill in the Modbus slave IP address, TCP port, number of points and Update Intervall in milliseconds for MODBUS TCP.

6 - Fill in the serial device, baud, data bits, stop bit, parity, number of points and Update Intervall in milliseconds for MODBUS RTU.

7 - Press button Apply and wait that the Apply button returns active and then press Exit

8 - Restart monitor.exe

9 - Monitored sample points are now visible

ConfigureUnits-rev167.png
1
Immagine03.png
2
Immagine04.png
3
Immagine05.png
4
Immagine06.png
5
Immagine06a.png
6
Immagine05.png
7
RestartMonitor_rev167.png
8
Immagine50.png
9

Step 3:


Configure each sample point

8 - Select the menu: Configure\Configure Sample Points

9 - Set Comment, Type, Units and the limits of each new point. Press button Apply

- Set type M_SP_TB_1 for digital point

- Set type M_ME_TC_1 for analog point

10 - Pressing button "Limits...", you can edit the Lower, Upper Alarm and Lower, Upper Warning limits

11 - The corresponding HMI object, here MDBPoint11, get the new Lower Upper Alarm limits.
ConfigureSamplePoints_rev167.png
8
Immagine09.png
9
Immagine09b.png
10
Immagine09c.png
11

Step 4:


HMI configuration with HMI designer

10 - Run the process C:\scada\bin\hmi_designer.exe

11 - Open the XML designer file in C:\scada\project\hmi0.ui

11.1 - Or create from scratch your HMI (dialog) and save it as hmi0.ui in C:\scada\project

11.2 - It is possible to create from scratch your HMI (dialog) and save it as hmi1.ui or hmi2.ui upto hmi9.ui in C:\scada\project

12 - Use the following widget classes

Widget Class
SINGLE POINT LED PSinglePointLed
DOUBLE POINT LED PDoublePointLed
SINGLE POINT LED SinglePointLed
DOUBLE POINT LED DoublePointLed
SWITCH PSwitch
THERMOMETER QwtThermo
LCD NUMBER PLCDNumber
COMMAND BUTTON QPushButton
TANK PTank
THERMOMETER PThermometer
EDIT FIELD QLineEdit
BREAKER Breaker



13 - Widget names MUST contain the underscore _ as separator between sample point SCADA name and widget ID

For example the widget with SCADA name MDBSample09 and ID 1 has full name: MDBSample09_1

Please see next image 1

widget_names_mandatory_underscore.png
1
14 - To enable the inspect popup window, please follow the procedure:

You have to connect the signals RightClicked(QString&,QString&) of the widgets with the slot RightClicked(QString&,QString&) of the HMI dialog (here Form1)
Signal-Slot-Popup-0001.png
Step 1
Signal-Slot-Popup-0002.png
Step 2
Signal-Slot-Popup-0003.png
Step 3
Signal-Slot-Popup-0004.png
Step 4
Signal-Slot-Popup-0005.png
Step 5
Signal-Slot-Popup-0006.png
Step 6
Signal-Slot-Popup-0007.png
Step 7
Signal-Slot-Popup-0008.png
Step 8
Signal-Slot-Popup-0009.png
Step 9
signals-slots-connections.png
Final result
Signal-Slot-Popup-0010.png
Working popup on HMI


15 - To enable commands, please follow the procedure:

Signal-Slot-01.png
Step 1
Signal-Slot-02.png
Step 2
Signal-Slot-03.png
Step 3
Signal-Slot-04.png
Step 4
Signal-Slot-05.png
Step 5
Signal-Slot-06.png
Step 6
Signal-Slot-07.png
Step 7
Signal-Slot-08.png
Step 8
Signal-Slot-09.png
Step 9


Meaning of led colors for SinglePointLed

Led colorInternal SCADA valueComment
single0000.png0Green means state off
single0001.png1Red means state on
single0002.png2Yellow is not used for Single point
single0003.png3Yellow is not used for Single point
single0004.pngWhite means HMI state none or Invalid
single0005.pngBlue means Communication driver error state or Invalid


Meaning of led colors for DoublePointLed

Led colorInternal SCADA valueComment
double0000.png0Yellow means Indeterminate or Intermediate state
double0001.png1Green means Determinate state off
double0002.png2Red means Determinate state on
double0003.png3Yellow means Indeterminate state
double0004.pngWhite means HMI state none or Invalid
double0005.pngBlue means Communication driver error state or Invalid



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