There you should see the response items specified in the request properties.įigure 11: Selecting the data export module In the window that opens (Figure 11), switch to the "All active items" tab.Reopen the data export module list and double-click "DDE Server.".Let the application send a request and receive a response.
![modbus poll response 2554 modbus poll response 2554](https://www.aggsoft.com/serial-data-logger/tutorials/modbus-polling/how-to-image001.png)
Turn on that module on the "Data export" tab by checking the checkbox to the left of the "DDE Server" item.įigure 10: Selecting the data export module.You can easily do that using the "DDE Server" data export module.
#Modbus poll response 2554 how to#
How to make sure that the application correctly interprets the responses received from the device? Please note that if you do that, requests will not be displayed. On the tab shown in Figure 8, turn on the "Display parsed values" option. Please note that the response message must be at least as long as the request message.įigure 9: Data communication How to view register values, not raw MODBUS packets? The requests sent to the MODBUS device are highlighted in yellow. In this case, the data communication will look like shown in Figure 9.
![modbus poll response 2554 modbus poll response 2554](https://www.tegakari.net/wp-content/uploads/2016/04/modbuspoll_img.jpg)
The value in the "Split strings by data timeout" field must be greater than or equal to the timeout specified in the "Request timeout" field for the MODBUS request.įigure 8: Configuring the data display mode We recommend configuring the data display mode, as shown in Figure 8. How to make sure that the application sends requests and receives responses?
![modbus poll response 2554 modbus poll response 2554](https://www.aggsoft.com/serial-data-logger/tutorials/modbus-polling/image003.png)
It allows you to try all features! Plugins can be downloaded separately here