How far can you go with RS-232?
40-50 feet
The maximum distance you can reliably run RS-232 signals is 40-50 feet. If you have a device more than 50 feet from the processor the solution is to use an ST-COM module.
What is the maximum length supported by RS-232 serial communication protocol?
50 feet
The RS232 standard does not define a maximum cable length but instead defines the maximum capacitance that a compliant drive circuit must tolerate. A widely used rule of thumb indicates that cables more than 50 feet (15 m) long will have too much capacitance, unless special cables are used.
How far can a serial cable be run?
Serial (RS-232) – The maximum cable length that we suggest is 50 feet. At lengths greater than 50 feet, there may be a loss in signal integrity which may affect data.
What is the maximum distance for RS485?
4,000 feet
The standard specifies electrical characteristics of a driver and receiver, and does not specify any data protocol or connectors. RS485 is popular for inexpensive local networks, multidrop communication links and long haul data transfer over distances of up to 4,000 feet.
What is the recommended maximum length of an RS-232 connection when operating at 20000 baud?
The original RS-232 specification limits cable length to 15.25 metres (50ft) at a maximum data rate of 20,000 bps (bits per second, also sometimes, usually incorrectly, refered to as the Baud rate), but in practice the interface is used well outside of these limits.
What is an RS-232 cable used for?
While USB has become the standard, RS232 is still widely used for older printers in the workplace. The RS232 protocol and cable allow the computer to give commands to the printer via a voltage signal. The printer then deciphers those commands and completes the print.
What is RS232 voltage levels?
RS 232 voltage levels
| RS232 Signal Line Voltage Levels | |
|---|---|
| Signal Voltage levels Volts | Logical State |
| -3 to -25 | 1 |
| +3 to +25 | 0 |
What is the maximum data rate of Rs-232?
20 kbps
Even though the standard specifies a maximum data rate for RS-232 of 20 kbps, some applications need for higher speed is overwhelming.
Is there a limit to the length of RS232 cable?
In my practice, rs232 is limited by several meters by problems arising from (bad) grounding. Voltage between local device ground and rs232 cable GND may be up to dozen of Volts, which could lead to system malfunction. So, it is worth to consider using differential pair communications like rs485 or ethernet.
What is the difference between RS232 and RS485?
RS232 and RS485 are two standards for electrical transmission that was in existence before the introduction of personal computers. They are employed in interfaces that enable serial communication between computers and peripheral devices.
How does a computer communicate with a RS-232 port?
A computer with an RS-232 serial port can communicate with the serial port of an embedded system (such as a router) as an alternative to monitoring over Ethernet. In RS-232, user data is sent as a time-series of bits.
Where can I find the RS232 serial interface?
As said before RS232 is a serial interface. It can be found in many different applications where the most common ones are modems and Personal Computers. All pinning specifications are writen for the DTE side. All DTE-DCE cables are straight through meaning the pins are connected one on one.