RS-485 to JSON converter, model RMC25

A Communication Bridge Between Serial World and JSON

RS-485 to JSON Converter – Model RMC25

This device is equipped with a Modbus RTU port over RS-485, enabling seamless communication with various PLCs, DCS, or SCADA systems. It features 100 Modbus holding registers for data handling.

To convert data into JSON format, automation engineers must store the desired values in registers 1 to 100 of the device. When a user sends an HTTP request to the device’s JSON page over LAN, the stored data is returned in JSON format, making it easily readable and integrable into modern web-based systems.

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One key application of this device is transferring data from a PLC over an RS485 network to a website or software platform. Its popularity stems from its support for the JSON protocol, which is widely used by developers and in the web ecosystem. Whenever there’s a need to transmit various sensor values or PLC register data over the network to a website—enabling more advanced services for customers—this converter becomes an essential choice

Modbus TCP over LAN
JSON over LAN
Modbus RTU over RS485

Thanks to its support for the Modbus TCP protocol, this device allows PLCs or DCS systems that lack RS485 ports but are equipped with LAN connectivity to write their data directly to the converter. Additionally, developers can easily retrieve this data in JSON format over the LAN connection.

This device features a web service that displays data from 100 memory registers. The web service can be used in two main ways:
In some cases, data from a PLC needs to be transferred to this converter, and the user simply wants to monitor the data remotely via the internet. For example, values such as temperature, humidity, pressure, or any other parameter stored in the system.
The device’s web service displays exactly 100 live data registers, allowing users to view this information in real time.
Another key function of the web service is that all Modbus and network settings can be easily configured through it.

جهت دریافت تمامی ویدئوهای فعلی و جدیدترین ویدئوهای ضبط شده با موضوعات اتصال و راه اندازی محصول و ارتباط با انواع PLC و HMI کلیک کنید.

ویدئوهای جدید رو به ایمیل من بفرست

Connecting PLCs to Instrumentation Equipment

Can the sensor be connected to a computer or laptop? If yes, how?

Yes. These sensors can be connected to various computers (regardless of the operating system) using RS-485 to USB converters.

If you have technical questions about the product and its components, how can you ask them?

Your technical questions about the product can be sent as text messages (SMS or social media) to the support team, and the technical experts will respond through the same channels. If needed, they will contact you directly.

Sales and Support Team Number:
+989177391091

Can the product be used in outdoor environments?

Yes. Since the device enclosure has an IP66 protection rating against water and dust ingress, this product can be used in outdoor environments. However, it is not recommended to expose it continuously to rain or direct water spray.

Does direct water spray on the sensor cover cause damage to the sensor?

Due to the protective cover on the sensor, sudden sprays of non-acidic liquids are repelled and do not cause any damage to the sensor.

How can the measurements taken by this sensor be viewed?

Since this sensor communicates via the Modbus protocol with devices such as PLCs, RTUs, and HMIs, you can view the measurements on industrial HMI displays and your personal computer monitor.

Is a cable included with the sensor?

Yes. One meter of flexible four-core cable (power + RS-485) with a thickness of 0.25 mm² is included with the product.

Through which network does the sensor communicate with other equipment?

Via the Modbus-RTU network

Can I change the sensor's address?

Yes, the sensor’s slave address can be changed via software using Modbus commands.

Which countries are the components used in this circuit manufactured in?

The components used in this sensor are manufactured in the USA and Switzerland.

Is it possible to use multiple sensors on a single Modbus network (line)?

Yes, according to Modbus protocol standards, this is possible. For more information and details on how to differentiate sensor data, you can refer to the sensor setup tutorial file.

Where can I find the product installation and setup guides?

You can find all tutorials and necessary files on the product page under the “Product Videos” and “Downloadable Files” tabs. Click here.

Does the sensor connect directly to the PLC?

Some PLCs have an RS-485 port, allowing the sensor to connect directly. However, for PLCs without an RS-485 port, the sensors must be connected via RS-485 expansion cards.

Can this sensor be used in a furnace?

Due to the sensor’s casing material, it cannot be installed directly inside a furnace. However, the company can provide the sensor with a half-meter cable, allowing customers to place the sensor circuitry outside while installing the sensor itself inside the furnace.

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A Communication Bridge Between Serial World and JSON

RS-485 to JSON Converter – Model RMC25

Modbus RTU Protocol

Modbus TCP Protocol

JSON Protocol

Capability

Web service