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How many wires are required for simplex communication in RS232 include the ground wire?
Traditional RS-232 communication needs one transmit line (TXD or TX), one receive line (RXD or RX), and a Ground return line.
Is 1 wire the same as i2c?
1-Wire is similar in concept to I²C, but with lower data rates and longer range. It is typically used to communicate with small inexpensive devices such as digital thermometers and weather instruments. A network of 1-Wire devices with an associated master device is called a MicroLAN.
What are the wiring diagrams for RS232 modems?
The unfortunate thing about RS232 is that aside from the simplest TD to RD and SG to SG hookups, and computer to modems (essentially straight through because a modem is DCE- just the reverse of a computer), everybody does it differently. For the diagrams below, leave off FG when you don’t have it (DB9).
How many RS232 connectors do you need?
This little gizmo, well does what it’s call, it converts a 9 pin ‘D’ type RS232 connector to a 25 pin ‘D’ type RS232 connector. This about covers all the permutations RS232 wiring I would think you’re ever likely to need in the whole wide world of RS232 wiring and communications.
Which is the simplest example of a RS232 cable?
Lets start with the simplest of RS232 cable connections to give you an immediate idea of what I’m talking about, have a look at the first two diagrams below. This one above, null modem without handshaking, has to be the most simple RS232 cable as there is only the send and receive data lines crossed and a signal ground connection.
Is the RS-232 interface the same as the DCE?
The RS-232 interface presupposes a common ground between the DTE and DCE. This is a reasonable assumption when a short cable connects the DTE to the DCE, but with longer lines and connections between devices that may be on different electrical busses with different grounds, this may not be true.