{}

Our Brands

{"support":{"yesButton":"yes","noButton":"no","feedback":{"title":"What can we do to improve?"},"submitButton":"Submit","successMessage":"Thank you for your feedback","title":"Was this helpful?","feedbackPercentLabel":"of people found this helpful","captcha":{"error":"Please tick the box"}}}

Search FAQs

{"searchBar":{"inputPlaceholder":"Search by keyword or ask a question","searchBtn":"Search","error":"Please enter a keyword to search"}}

Modbus communication on a Uniflair unit.

Issue:
Modbus communication on a Uniflair unit.

Product line:
Uniflairl.

Environment:
All Models and Serial Numbers.

Cause:
Install.

Resolution:
MODBUS RTU

Scenario 1

Modbus is a communication protocol very famous and used all over the world. It’s quite easy and not so structured.

•          It has been developed at the end of ’70 from Modicom

•          The communication is multidrop, with Master and Slaves

•          It is not used only with industrial application

•          Serial communication: RS232 or RS485 half duplex

•          Protocol type: Modbus RTU (1 byte = 2 exadecimal words) and Modbus ASCII (1 byte = 2 ASCII  words).

Configurable Baud rate (max 19200)

scheda seriale 485OD121JEGateway

The units, all fitted with the serial card, are connected:

• each unit with the RS485 cable;

• last unit with the final resistor;

• first unit with the Gateway.

To realize a local net to be connected to a BMS working with Modbus, it’s necessary:

• 1 gateway LBM every 16 units;

• 1 serial card RS485 for every controller;

• 1 terminal line (120 Ω);

• PC for the gateway configuration.

Scenario 2

Unites fitted with pCO1, upCOxs

Solid_UTP4_Cat_5__Cat_5e_Cable scheda seriale 485

To realize a local net to be connected to a BMS working with Modbus, it’s necessary:

• 1 RS485 serial card for every controller;

• 1 terminal line (120 Ω);

• PC for the gateway configuration.

Users group

Discuss this topic with experts

Visit our Community for first-hand insights from experts and peers on this topic and more.

Can't find what you are looking for?

Reach out to our Customer Care team to receive information on technical support, assistance for complaints and more.