Hi everyone! VT SCADA can wirelessly
operate the ESP8266-connected sensors and actuators using Modbus TCP communication. Like the last video, we are
going to build on the number 7 video of the ESP8266 Modbus Ladder Logic series. Expand the controller, the Wi-Fi module settings,
and double-click to enable the Access Point. Input the network name of ESP8266
and a password if required. Enter an IP address of 192.168.0.1, which
should be the same as the network gateway. Expand the communication
and the Modbus slave tree. Double-click on Add Interface
and select the TCP interface. Expand the Interface – TCP and
double-click on communication device to select the ESP8266 onboard WiFi.
Note that the port number 502 for Modbus TCP is automatically assigned.
Then disable the RTU interface. This will allow us to use the existing
Modbus tags of the RTU for the TCP interface. Then compile the project. In the Arduino IDE, locate the dot attach line
in the void setup section of the code and input , 544, 2400 for the servo motor.
Then compile and upload the Arduino code. Follow the link in the description
to download VT SCADA Light. VT SCADA Light supports the creation
of a maximum of 50 Modbus tags, which is more than enough for this video. Add a new VT SCADA application
with any name of your choice. Open the tag browser window
and click on the New button. Select Ports and then TCP/IP Port.
Input the port name of TCP. On the connection tab, input the ESP8266 IP
address of 192.168.0.1 and the port number of 502. Right-click on the TCP port and select New Child.
Select drivers and then Modbus Compatible Device. Enter the name Modbus.
On the options tab, select Open Modbus TCP. On the communication tab, ensure that the station
address is the same as the ESP8266 Modbus address. Right-click on the Modbus
driver and select New Child. Select digitals, and then I/O
and Calculations – Digitals. Input the ON Modbus Tag from the ESP8266 with
the Modbus mapped coil write address of 1. Click on New and repeat the previous steps to add
the OFF Modbus tag with the write address of 2. Add a new tag for the LED mapped to the
Modbus discrete input read address of 10001. For the analog I/Os, click on New, select
Analogs, and then I/O and Calculations—Analogs. Add the POT tag mapped to the Modbus
input register read address of 30001. Finally, on tags, add the SERVO with the
Modbus holding register write address of 40001. Right-click on the LED tag and select Draw.
This will open the Idea Studio widgets window. Select an indicator from the indicator
folder and place it in the idea studio. Repeat the same steps for the ON tag, but
navigate to the buttons & Switches folder and then the basic controls folder
to select the momentary button. Repeat the previous steps for the OFF tag.
For the POT tag, navigate to the text folder and select the LCD 7 Segment widget.
And a horizontal slider for the SERVO tag. Close the tag browser, delete all other items from
the idea studio, and re-arrange the tags widget. Double-click on the ON tag widget.
Type one for the value to write when button pressed and zero for the value
to write when button is released. Type ON for the button-down and button-up labels. Repeat the previous steps for the OFF tag, but
with OFF for the button-down and button up labels. Double-click on the slider to
set the maximum value to 180. Close the idea studio and click on Overview. Click on the ON button to turn on the
LED and its indicator on the VT Scada. And on the OFF button to turn it off. The potentiometer value is shown on
the 7-segment display when adjusted. The position of the servo motor can
be set by the horizontal slider. And that is FLProg Modbus TCP with VT Scada Thanks for watching.
I hope this video is helpful. If so, please consider liking, subscribing,
sharing, and click on the bell icon for more videos.
Bye for now.
