Acuity Controls nLight ECLYPSE User Manual page 7

Default Device Instance Number Numbering System for nLight ECLYPSE Controllers............................ 103
Adopting a Numbering System for MAC Addresses, Device Instance Numbers, and Network Numbers . 104
Setting the Controller's MAC Address ....................................................................................................... 105
Inter-Building BACnet Connection ............................................................................................................. 105
BACnet/IP Broadcast Management Device Service (BBMD) .................................................................... 105
Power Supply Requirements for 24VAC-Powered Controllers............................................................................. 106
BACnet MS/TP is a Three-Wire Data Bus ................................................................................................. 106
Avoid Ground Lift ....................................................................................................................................... 106
Techniques to Reduce Ground Lift ............................................................................................................ 107
About External Loads................................................................................................................................. 107
Transformer Selection and Determining the Maximum Power Run Length............................................... 107
24VAC Power Supply Connection ............................................................................................................. 108
CHAPTER 12
Modbus TCP Configuration ........................................................................................................................................... 109
Controller Modbus Support................................................................................................................................... 109
Modbus TCP Device Connection.......................................................................................................................... 109
Device Addressing................................................................................................................................................ 109
About Device Addressing........................................................................................................................... 109
CHAPTER 13
Modbus RTU Communication Data Bus Fundamentals................................................................................................ 110
Controller Modbus Support................................................................................................................................... 110
Modbus RTU Data Transmission Essentials ........................................................................................................ 110
Modbus RTU Data Bus is Polatiry Sensitive.............................................................................................. 110
Data Bus Physical Specifications and Cable Requirements................................................................................. 111
Data Bus Topology and EOL Terminations .......................................................................................................... 111
When to Use EOL Terminations ................................................................................................................ 111
About Setting Built-in EOL Terminations ................................................................................................... 112
Only a Daisy-Chained Data Bus Topology is Acceptable .......................................................................... 112
Data Bus Shield Grounding Requirements........................................................................................................... 113
Modbus RTU Data Bus Shield Grounding Requirements.......................................................................... 113
Device Addressing................................................................................................................................................ 114
CHAPTER 14
Resetting or Rebooting the Controller ........................................................................................................................... 115
Resetting or Rebooting the Controller .................................................................................................................. 115
CHAPTER 15
ECLYPSE Controller Troubleshooting........................................................................................................................... 116
CHAPTER 16
Wi-Fi Network Troubleshooting Guide........................................................................................................................... 118
nLight ECLYPSE