THORLABS ULN15TK User Manual page 12

Ultra-Low-Noise Laser System
RS-485 Connector Pin Information
The ULN can be interfaced via RS485 half-duplex (2-wire) according to the below pinout table. Pins 8 and 9 are for
factory configuration use only. Do not connect to pins 8 and 9. Pins 3, 4, and 6 have no internal connections and
should not be used.
Page 10
D8-9/RS485 Pin Assignment
Pin Output Signal
1 RS-485 half-duplex T/R+
2 RS-485 half-duplex T/R-
3 NC
4 NC
5 GND
6 NC
7 GND
8 DO NOT CONNECT
9 DO NOT CONNECT
Chapter 4: Software Communications
TTN282198 -D02