kdb188: RS

RS-422/485 Wiring Diagram (2 Wire) Intellicon Adapter RS-485 Peripheral. Note 1: The RTS and CTS connections are not necessary if you jumper the CTS selection ( J9 and J10 ) appropriately on the Intellicon-6+2. Note 2: These pinouts only apply to the Intellicon-(Flex8, 6+2) and Dflex adapters with the RS-422/485 options. This Intellicon 2 and 4 have a different RS-422/485 Pinout.

Again make a note of which LEDs are lit. If any single LED is lit by both of the devices, then there is an output conflict, and the cable wiring is incorrect. By this, I mean that one line in the cable has an output driving it from both ends - and this is not correct for RS232 - so that means that the cable wiring is not correct for the devices.

If using a pre-made cable, verify wire color to pin location – when in doubt, ring it out. Party mode interface Party mode is an advanced communications configuration requiring a working knowledge of the ANSI/TIA/EIA-422 and TIA/EIA-485 standards, as well as SEM MDrive products and the MCode programming and control language.

RS232 Cables: wiring & pin connections ... Serial data standards RS422 RS449 RS485 20 mA current loop Whenever RS232 is used, RS232 cables will be needed to provide the required electrical connection. These cable can take ... Serial data cable diagrams and pin connections.

RS-422, also known as TIA/EIA-422, is a technical standard originated by the Electronic Industries Alliance that specifies electrical characteristics of a digital signaling circuit. It was intended to replace the older RS-232C standard with a standard that offered much higher speed, better immunity from noise, and longer cable lengths. RS-422 systems can transmit data at rates as high as 10 ...

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Both RS-422 and RS-485 use a twisted-pair wire (i.e. 2 wires) for each signal. They both use the same differential drive with identical voltage swings: 0 to +5V, but RS-422 is a multidrop standard, allowing for one driver and up to 10 receptors, and rs485 is a multipoint standard, allowing for up to 32 devices (drivers, receivers or transceptors)

Tech Stuff - RS-232 Cables, Wiring and Pinouts. Brief tutorial and pinouts for RS-232, RS422/485, T1/E1 and V.35. If you want to know more about RS 232 signals then this page may help - but you may also need to lie down in a darkened room afterwards.. Contents

Figure 4: Pinout diagram for DB-25 Connector. Most of the pins on DB-25 connectors are not connected since only nine pins are used for RS-232, RS-422, and RS-485 communication. To perform a loopback test with no hardware flow control with a DB-25 connector, connect pins 2 to 3 for RS-232. For RS-422/485 connect pins 5 to 20 and 7 to 22.

RS485 is similar to RS422 upon which it is based. The main difference is that up to 32 transmitter receiver pairs may be present on the RS485 lines at one time. RS-485 is generally a 2-wire half duplex system. AN RS485 4-wire full duplex system is very similar to RS-422. RS485 is still popular. It is similar to the RS422 upon which it is based.