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Protocols and Variables

Protocols are the elements responsible for establishing physical and logical communication with devices. It is where the "how" and "what" of data acquisition is defined.

Protocol Definition​

Each protocol defines a specific communication method. To configure a protocol, its type must first be selected and the necessary connection parameters established (such as IP addresses, ports, unit IDs, etc.).

Supported Protocol Types​

InDataX is compatible with a wide range of industrial standards. Click on each one to see its detailed configuration:

  • MQTT: Lightweight messaging protocol ideal for IoT and telemetry.
  • S7 (Siemens): Direct connection with Simatic family PLCs (S7-300, S7-400, S7-1200, S7-1500).
  • OPC UA: Industrial interoperability standard for secure data exchange.
  • Modbus TCP: Communication over Ethernet networks using the Modbus standard.
  • Modbus RTU: Serial communication (RS-485/RS-232) using the Modbus standard.
  • Ethernet: Generic communication over TCP/IP.
  • USB Serial: Access to data through local COM ports.
  • Internal: System variables and internal InDataX calculations.

Variables​

Once the protocol connection is defined, Variables must be added. These represent the specific data points we want to read or write.

For each variable, it is necessary to configure:

  1. Name: Unique identifier of the variable within the context.
  2. Data Type: Indicates if it is an integer (Int), boolean (Bool), real (Float), string (String), etc.
  3. Read Parameters: These vary according to the selected protocol (for example, the DB and offset in Siemens S7, or the holding register in Modbus).