ONICON System-30 MODBUS BTU - Manual (Page 3)

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System-30 BTU Measurement System MODBUS RTU RS485 04/14 - 0583-1 / 18345
Page 3
TABLE OF CONTENTS
1.0 INTRODUCTION .............................................................................................................. 5
1.1 Purpose of this Guide ............................................................................................... 5
1.2 Typical SYSTEM-30 BTU MEASUREMENT SYSTEM ........................................... 5
1.3 Standard Features and Specifications ..................................................................... 6
1.4 Working Environment .............................................................................................. 7
1.5 Warranty and Serial Number ................................................................................... 7
2.0 UNPACKING ..................................................................................................................... 8
2.1 Checking That You Have Received Everything ...................................................... 8
3.0 INSTALLATION ................................................................................................................ 9
3.1 Site Selection ............................................................................................................ 9
3.2 Mechanical Installation ......................................................................................... 10
3.2.1 Main Unit Installation .................................................................................. 10
3.2.2 Thermowell Installation .............................................................................. 11
3.2.3 Temperature Sensor Installation ................................................................. 11
3.3 Electrical Installation ............................................................................................. 13
3.3.1 Single Mode vs. Dual Mode Operation ....................................................... 13
3.3.2 Electrical Wiring .......................................................................................... 16
4.0 START UP & COMMISSIONING ..................................................................................... 17
4.1 Display and User Interface ....................................................................................... 17
4.2 Processor Start Up ................................................................................................... 17
4.3 Units and Multipliers ............................................................................................... 18
4.4 Network Device Address Entry ............................................................................... 19
4.4.1 Changing the MAC Address ......................................................................... 19
4.5 BAUD Rate ................................................................................................................ 26
4.6 Biasing and Termination ......................................................................................... 27
4.7 MODBUS Memory Map ........................................................................................... 28
4.7.1 MODBUS RTU Register Format and Networking Information ................... 28
4.7.2 MODBUS Memory Map ............................................................................... 29
4.7.3 Totalization, Resetting Tools, and Over-range & Rollover .......................... 34
4.8 Diagnostics .............................................................................................................. 36
4.8.1 Diagnostic Lights .......................................................................................... 36
4.9 Commissioning ........................................................................................................ 37
4.9.1 Commissioning Worksheet .......................................................................... 38