Modbus RTU Modbus references: www.modbus.org. MODBUS APPLICATION PROTOCOL SPECIFICATION V1.1b3, Date: 26.04.2014, Version: 1.1b3 MODBUS over Serial Line Specification and Implementation Guide V1.02, Date: 20.12.2006, Version: 1.02 The controller can be controlled by means of Modbus RTU. The I/O data, with, e.g., the preconfigured drive values (see Process data objects (PDO)), can be handled with the standard Modbus function codes. To configure your own I/O data, however, function code 2Bh (CAN Encapsulation) must be supported by the master in order for the parameters to be read and written independent of the process image. If the master does not support this function code, the I/O image can be configured and stored using Plug & Drive Studio. The master can then access the data using the standard Modbus function codes. Otherwise, configuration via the configuration file is possible (see chapter Configuration via USB) or the use of Plug & Drive interface (see document Function description Plug & Drive interface). GeneralCommunication settingsFunction codesFunction code descriptionsProcess data objects (PDO)NanoJ objects RS-485 The "Two-Wire Modbus Interface" electrical interface is supported by the controller in accordance with standard EIA/ TIA-485 (RS-485). Modbus Modicon notation with PLCs Many PLCs use the Modicon addressing model. This notation is not used in the Modbus standard. The following address notation is relevant for Nanotec controllers: Input register 30001 - 39999 is mapped to Modbus telegram address 0 (0h) - 9998 (270Eh). Holding register 40001 - 49999 is mapped to Modbus telegram address 0 (0h) - 9998 (270Eh). Note: Where Modbus addresses are mentioned in the manual, it may be necessary to implement the register addresses in the PLC in accordance with Modicon notation.
Modbus RTU Modbus references: www.modbus.org. MODBUS APPLICATION PROTOCOL SPECIFICATION V1.1b3, Date: 26.04.2014, Version: 1.1b3 MODBUS over Serial Line Specification and Implementation Guide V1.02, Date: 20.12.2006, Version: 1.02 The controller can be controlled by means of Modbus RTU. The I/O data, with, e.g., the preconfigured drive values (see Process data objects (PDO)), can be handled with the standard Modbus function codes. To configure your own I/O data, however, function code 2Bh (CAN Encapsulation) must be supported by the master in order for the parameters to be read and written independent of the process image. If the master does not support this function code, the I/O image can be configured and stored using Plug & Drive Studio. The master can then access the data using the standard Modbus function codes. Otherwise, configuration via the configuration file is possible (see chapter Configuration via USB) or the use of Plug & Drive interface (see document Function description Plug & Drive interface). GeneralCommunication settingsFunction codesFunction code descriptionsProcess data objects (PDO)NanoJ objects RS-485 The "Two-Wire Modbus Interface" electrical interface is supported by the controller in accordance with standard EIA/ TIA-485 (RS-485). Modbus Modicon notation with PLCs Many PLCs use the Modicon addressing model. This notation is not used in the Modbus standard. The following address notation is relevant for Nanotec controllers: Input register 30001 - 39999 is mapped to Modbus telegram address 0 (0h) - 9998 (270Eh). Holding register 40001 - 49999 is mapped to Modbus telegram address 0 (0h) - 9998 (270Eh). Note: Where Modbus addresses are mentioned in the manual, it may be necessary to implement the register addresses in the PLC in accordance with Modicon notation.
RS-485 The "Two-Wire Modbus Interface" electrical interface is supported by the controller in accordance with standard EIA/ TIA-485 (RS-485).
Modbus Modicon notation with PLCs Many PLCs use the Modicon addressing model. This notation is not used in the Modbus standard. The following address notation is relevant for Nanotec controllers: Input register 30001 - 39999 is mapped to Modbus telegram address 0 (0h) - 9998 (270Eh). Holding register 40001 - 49999 is mapped to Modbus telegram address 0 (0h) - 9998 (270Eh). Note: Where Modbus addresses are mentioned in the manual, it may be necessary to implement the register addresses in the PLC in accordance with Modicon notation.
