Campbell Scientific LR4 Four Channel Latching Relay Module - Manual (Page 6)

LR4 Table of Contents
ii
List of Figures
1. LR4 Latching Relay Module...................................................................... 2
2. Form A - State = 1 ..................................................................................... 2
3. Form A - State = 0 ..................................................................................... 3
4. Form C - State = 1...................................................................................... 3
5. Form C - State = 0...................................................................................... 3
6. Communication Jumpers............................................................................ 9
7. Program Mode Jumper............................................................................. 12
List of Tables
1. SDI-12 Wiring ........................................................................................... 4
2. Modbus/RS-232 Wiring........................................................................... 10
3. Modbus/RS-485 Wiring........................................................................... 10