LumaSense Technologies M305 - Manual (Page 14)

M305 Manual Installation and Operation 14
RS485 Option
RS-485 Two wire is available as an option. The connection scheme is shown below:
RS-485 for multi-drop applications
Each M305 address must be set to a different value.
To alter the address:
1. Press and hold PAGE button. The word ACCESS will appear in lower display.
2. Press SCROLL button. LEVEL 1 will appear.
3. Press UP button until LEVEL 3 appears.
4. Enter PASSCODE by pressing the UP button until 3 appears and wait until PASS appears.
5. Press PAGE button repeatedly until COMMS H module appears.
6. Press UP button until J module appears.
7. Press SCROLL button twice until ADDRESS appears.
8. Press UP/DOWN buttons to change address.
9. Press PAGE button until ACCESS appears.
10. Press SCROLL button. Display will show LEVEL 3.
11. Press DOWN button until LEVEL 1 appears.
12. Press the center, round button on top row to go back to the normal display mode.