Usb 485 converter
Its been a while, but I think I was able to lift the receiver enable pin and tie it appropriately. Should only add the cost of one resistor and a bit more copper.Īs for considereing other options, I would love to, but I am dictated by my customer. Add or remove the solder jumper and the recieve enable would be enabled and the transmit enable would go back to the micro. By default it would connect the /RE and DE as right now. Not that Sparkfun reads these comments (its been two YEARS since I posted), but if they do, I would suggest the next revision of the board include a solder jumper to allow for a "receiver always on" mode. Go to the Product Overview for this category.
#USB 485 CONVERTER SERIES#
For use with GS series AC drives, SureServo servo drives, SOLO and ProSense process controllers, CLICK PLCs and P3-550 PLC.
#USB 485 CONVERTER PC#
Otherwise I contend they have their heads in a dark place. AutomationDirect PC adapter, USB A to RS-485 (RJ45/RJ12). If in the commercial world RS-485 is only used for single duplex single master to slave setups then their implementation is fine. You can connect up to 256 meters on 4000 feet of twisted pair wire to this converter. This is an inexpensive device that will work well if you want to read your meters locally (on-site). The SP3485 is a half-duplex transceiver, so it can only communicate one way at a time, but it can reach transmission speeds of up to 10Mbps. If they are the same, great if not, you had a collision and must rebroadcast. Our USB Converter, translates the RS-485 signal from the meters to a signal that can be understood by your computer and our EKM Dash software. This is the newest revision of this board and this breakout board pairs an SP3485 RS-485 transceiver with an FT232RL USB UART IC to convert a USB stream to RS-485. When you transmit, you read back what you wrote. For this reason, the receiver is always left on. In such systems it is important/critical to know if you have had a bus collision. I suppose this is a matter of taste, but most systems that use RS-485 in the military world use it because it allows for a multidrop system with limited number of wires. Select Hardware Flow Control (RTS/CTS) in your favorite program or library and away you go!
#USB 485 CONVERTER SERIAL#
This compact device quickly converts USB port connections to RS-422/485 so you can connect legacy serial devices to a newer PC or laptop. LEDs indicate transmitting and receiving of data. Serial terminal block can be removed for easy wiring.