Modbus Slave
The MODBUS Slave Driver was designed for use with serial devices that support the MODBUS RTU or MODBUS ASCII protocol as “Master”.
MODBUS Protocol is a messaging structure developed by Gould Modicon in 1979, used to establish master-slave/client-server communication between intelligent devices. It is a de facto standard, truly open and the most widely used network protocol in the industrial manufacturing environment. It is literally implemented by hundreds of vendors on thousands of different devices in order to transfer discrete/analog I/O and register data between control devices.
MODBUS is an application layer messaging protocol, positioned at level 7 of the OSI model, that provides client/server communication between devices connected on different types of buses or networks.
The MODBUS protocol has been accepted by the IEC as a Public Available Specification (IEC PAS 62030).
The MODBUS Slave driver has been developed to support a wide range of MODBUS compatible devices available in the automation world.
The driver simulates one or more MODBUS slaves, defined as stations. The data of the slaves can be defined as tasks, associating the tags of the supervisor to the MODBUS addresses of a slave (station).
The driver supports the following Function Codes: 01H = Read Coils, 02H = Read Discrete Inputs, 03H = Read Holding Registers, 04H = Read Input Registers, 05H = Write Single Coil, 06H = Write Single Register, 07H = Read Exception Status, 0FH = Write Multiple Coils, 10H = Write Multiple Registers.
The driver manages also broadcast messages (messages sent to the dummy slave 0) for the following Function Codes: 05H, 06H, 0FH, 10H.
For more information, please see the section “Addressing”.
- Interface Device: Any standard Modbus Master device
- Manufacturer: Modbus
- Requirements: Modbus RTU or Modbus ASCII protocol as Slave
- Import Tags: Support Import Tags
- Operating System: WIN 32/64, Win CE
Download links:
Movicon 11 – Rel. 11.4.1.9 DBL286
Movicon 11 CE – Rel. 11.4.1.9 DBL286
