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What is the difference between Ethernet and RS485?
Ethernet (IEEE 802.3) is the most broadly used network protocol these days. It is also a serial communication standard. The major drawback of RS-485 is its limited communication speed which is maxed out at 10 Mbaud. RS-485 is designed for a master/slave topology.
How long can a RS485 cable be?
1200 meters
CABLE LENGTH AND DATA RATE RS422 and RS485 specified maximum cable length is 1200 meters. The maximum working data rate (in bits per second – bps) depends on network devices characteristics, cable capacitance and installed termination resistors. The longer the communication cables, the lower the maximum data rate.
Why is RS485 limited to less than 100 meters?
I have a question, why is rs485 limited to less than 100 meters at 10mpbs ( mbaud ) and is 100Base-TX ethernet applicable on 100 meters with 100 mbps bitrate i know that rs485 normally use a sort of NRZ encoding with 2 levels and ethernet uses a MLT-3 4B5B encoding with 3 levels
What is RS485 and how is it different from Ethernet?
The standard do not handle a mandatory galvanic insulation, so Ethernet is better. No standardization exist on how to utilize the RS485 standardized hardware. So the communication is a mix of different way of communicate some better some worse. So the firmware layer do not exist as part of the standard.
How long can a cable be used to transmit RS-485?
RS-485 can be transmitted at a distance of up to 1200m (4000 feet) when the data rate is below 100k bps. At higher data rates, the cable length must be reduced as shown in the chart below.
Which is better for data packet collisions Ethernet or RS485?
Ethernet however has no built-in methods to avoid data packet collisions. In applications like process control or robot control, for us, the deterministic behavior is mandatory while the speed of the communication is usually more than high enough.