Rs 422 connection wiring diagram wiring diagram a set of wiring diagrams may be required by the electrical inspection authority to take up association of the address to the public electrical supply system. Unlike rs 232 rs 422 is capable of data transmissions over long distances up to 4000 feet.
Fernhill Scada Adam 4520 Communication Guide
Rs 422 wiring diagram. To perform a loopback test with no hardware flow control with a db 25 connector connect pins 2 to 3 for rs 232. Because rs 422 is using 2 wires for each. These pinouts only apply to the intellicon flex8 62 and dflex adapters with the rs 422485 options. This intellicon 2 and 4 have a different rs 422485 pinout. Db25 signal db9 definition 1 protective ground 2 txd 3 transmitted data 3 rxd 2 received data. It has been widely used for decades.
Termination is not required for baud rates 192k or lower at distances up to. Mdrivemforce rs 422 multipoint network bus and stub configuration. Pinout diagram for db 25 connector. As such serial devices should have two serial pins. A suitable cable is shown below. Rs 422485 wiring diagram 2 wire intellicon adapter rs 485 peripheral.
Rs 232 an rs232 serial bus consists of just two communication wires one for sending data and another for receiving. Rs485 was designed to address the multi drop limitation of rs422 allowing up to 32 devices to communicate. Rs232 pinout rs232 pinout standards exist for both db9 and db25 connectors as shown below. The rs232 cable shown above gives the more likely connections seen in an rs232 cable. Rs 422 is a serial communications standard that provides asynchronous communication capabilities such as hardware flow control software flow control and parity check. 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.
Typical rs232 serial data cable. Some cables could have more connections for additional functionality but these are rarely used. Order to determine whether you need a 2 wire rs 485 connection or a 4 wire rs 422rs 485 connection. See note on page 3. For rs 422485 connect pins 5 to 20 and 7 to 22. The diagram below shows a bus and stub type network configuration mdrivemforce rd and rl style connectors provide an additional signal contact point for daisy chain configurations.
Them rs 422 multidrop network will work well. The rts and cts connections are not necessary if you jumper the cts selection j9 and j10 appropriately on the intellicon 62. 4000 ft1220 m so it is not shown in the simplified figures which follow.
Gallery of Rs 422 Wiring Diagram
