Is MOBUS a serial port?
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As the title says! ! ! ! ! ! ! 1!!!!!!!!!!
MODBUS is an RS485 protocol standard
Serial and parallel ports are likely types of wiring methods. And MODBUS should be a type of protocol. There seems to be no inevitable connection between the two.
The standard Modbus port uses an RS-232C compatible serial interface, which defines the pins of the connection port, the cables, the signal bits, the transmission baud rate, and parity. Read this several times!
Mobus is a protocol; the ones that are more commonly used these days are Modbus RTU and Modbus TCP； In serial port mode, you can choose between RS-232/485/422. Of course, the standard port for the host computer is RS232, while in industrial settings where communication with third parties is involved, RS485 is most commonly used. Now, customers are tending to choose Modbus TCP for communication via Ethernet ports. You can also find many industrial converters on the market, which are used for conversion, such as from RS485 to 232. .
One more thing: for example, some DCS manufacturers have specialized cards for Modbus serial communication, and they don’t have the serial ports that we usually see in upper-level computers. It doesn’t matter what this interface looks like; the important thing is that it supports this protocol. You can obtain the product’s manual to find out which pins or terminals serve which functions. As long as both parties use the same communication protocol and have the settings configured identically, communication can be established.
This post was last edited by qugd on 2010-12-4 at 12:11. MOBUS – I’m not sure what kind of interface this is. There is another interface that is very similar in terms of its format; it’s called the MODBUS interface. It is a standard industrial protocol interface that can be transmitted via RS232, RS422, RS485, and other methods. The forms of these interfaces are also diverse; the simplest version involves two wires connected directly to terminals, while more complex versions may use a 25-pin D-type connector. Currently popular options include RJ45 and even USB connectors. Furthermore, wireless transmission can also be achieved using certain devices.