This is a type of MODBUS communication protocol that uses ASCII characters to do serial communication. What are the major types of MODBUS which is used for industrial communication? In case the slaves or Fieldbus wasn’t able to perform the requested action then the slave would create an error message and it would be transmitted to the master. These values could be analog or digital, the slaves would respond to this request by giving the data to the master or by taking the action which is required. The slaves are mostly the field devices, so in this configuration, the master would request to read or write a value. Mostly the master would be a PLC, PC, DCS, PAC, or RTU. In this type of communication, the master would communicate with one or multiple slaves. The devices which use MODBUS would communicate in a master/slave arrangement. MODBUS was openly published so there is no need to pay a royalty fee to use it. MODBUS is an application layer protocol that is based on master/slave or request/reply architecture. MODBUS was developed by MODICON to communicate with industrial electronic devices such as PLC, PAC, or DCS over a twisted pair of wires. This communication protocol can be used to do the data transfer between the process control equipment and the HMI. MODBUS is a communication protocol that is used for many industrial applications. What are the MODBUS TCP/IP devices and MODBUS RTU devices?.What are the Advantages of Modbus TCP/IP over RTU?.What is RS 232, RS 422, and RS 485 and what is their difference?.How should we connect MODBUS devices together in a network?.What is the major difference between the MODBUS TCP and MODBUS RTU?.What are the major types of MODBUS which is used for industrial communication?.

Tcp ip over serial