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TABLE OF CONTENTS IMPORTANT CUSTOMER NOTICE ...................................................................................... 2 CHAPTER 1: INTRODUCTION............................................................................................. 7 Safety information ............................................................................................................ 7 CHAPTER 2: INSTALLATION .............................................................................................. 9 CHAPTER 3: ELECTRICAL CONNECTIONS ............................................................................ 9 Pin configuration ............................................................................................................. 10 Instrument and Compod™ power .................................................................................. 11 RS485 connection ............................................................................................................ 11 General 2-wire topology RS485 network ................................................................... 12 Daisy chain units ......................................................................................................... 12 Analog inputs .................................................................................................................. 13 Pulse output .................................................................................................................... 13 Digital outputs................................................................................................................. 13 Relay outputs .............................................................................................................. 13 CHAPTER 4: COMMUNICATING ...................................................................................... 14 Power up ......................................................................................................................... 14 Data format various registers ......................................................................................... 14 Modbus registers overview ............................................................................................ 15 Special – Modbus set up ................................................................................................. 17 Registers explained ......................................................................................................... 17 40001: Actual flow ...................................................................................................... 17 40003: Set point .......................................................................................................... 17 40005 – 40008: Totalizer ............................................................................................. 18 40009: Valve power .................................................................................................... 18 40010 - 40011: Analog inputs 1 & 2 ........................................................................... 18 40012: Digital inputs ................................................................................................... 18 Compod™ Instruction Manual IM-COMPOD Rev. E 3
