500-171-R Pinout and drawing
What is the pinout and physical description of the 500-171-R adapter for RS485/422 4 wire and RS485 2 wire?
The 500-171-R, DB25 to Screw terminal adapter is designed for use with the following Lantronix products:
UDS-10, UDS100, UDS1100, SDS1100, SDS1101 and EDS1100
If the Lantronix device will be powered through the screw terminal adapter, the following voltages can be used:
| Product | DC Voltage range | AC Voltage range |
| UDS-10 | 9 to 30Vdc | N/A |
| UDS100 | 9 to 30Vdc | 9 to 24Vac |
| UDS1100 | 9 to 30Vdc | 9 to 24Vac |
| SDS1100 | 9 to 30Vdc | 9 to 24Vac |
| SDS1101 | 9 to 30Vdc | 9 to 24Vac |
Pinouts for RS485 4 Wire are as follows:
- Connect TX + to your serial device's RX +.
- Connect TX - to your serial device's RX -.
- Connect RX + to your serial device's TX +.
- Connect RX - to your serial device's TX -.
Pinouts for RS485 2 Wire are as follows:
- Connect TX + to your serial device's positive line.
- Connect TX - to your serial device's negative line.
Positive ( + ) = B
Negative ( - ) = A
[Originally Published On: 03/12/2007 09:26 AM]