AERCO Modbus Communications Manual - Manual (Page 3)

MODBUS
Communication GF-114
Contents USER MANUAL OMM-0035_0C
05/18/12 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 • Ph: 800-526-0288 Page 3 of 200
TABLE OF CONTENTS
TABLE OF CONTENTS ............................................................................................................... 3
CHAPTER 1: INTRODUCTION AND GENERAL DESCRIPTION ....................... 7
1.1 INTRODUCTION................................................................................................................... 7
1.2 AERCO BMS AND C-MORE CONTROLLER MODELS COVERED ................................... 7
1.3 MIMIMUM MODBUS SUPPORT REQUIREMENTS ............................................................ 8
1.3.1 Communication Medium ................................................................................................ 9
1.3.2 Address Support............................................................................................................ 9
1.3.3 Modbus Transmission Modes ....................................................................................... 9
1.3.4 Timing Specifications .................................................................................................... 9
1.4 MODBUS FUNCTION SET SUPPORT .............................................................................. 10
1.5 EXCEPTION RESPONSES ................................................................................................ 11
1.6 PHRASES, ABBREVIATIONS & ACRONYMS ................................................................. 11
CHAPTER 2: STANDARD REGISTER ASSIGMENTS .................................... 13
2.1 INTRODUCTION................................................................................................................. 13
2.1.1 Input Registers ............................................................................................................ 13
2.1.2 Holding Registers ........................................................................................................ 13
2.2 C-MORE BOILER CONTROLLER STANDARD REGISTER ASSIGNMENTS ................. 14
2.2.1 C-More Boiler Controller Standard Input Register Assignments ................................. 14
2.2.2 C-More Boiler Controller Standard Holding Register Assignments ............................. 17
2.3 BMS/BMS II CONTROLLER STANDARD REGISTER ASSIGNMENTS .......................... 21
2.3.1 BMS/BMS II Controller Standard Input Register Assignments .................................... 21
2.3.2 BMS/BMS II Controller Standard Holding Register Assignments ............................... 28
2.4 ACS CONTROLLER (ONLY) STANDARD REGISTER ASSIGNMENTS ......................... 36
2.4.1 ACS Controller Standard Input Register Assignments ................................................ 36
2.4.2 ACS Controller Standard Holding Register Assignments ............................................ 43
CHAPTER 3: STANDARD APPLICATION OPERATIONS ............................... 53
3.1 INTRODUCTION................................................................................................................. 53
3.2 C-MORE CONTROLLER STANDARD APPLICATION OPERATIONS ............................ 53
3.2.1 Password Protection for Input and Holding Register Access ...................................... 53
3.2.2 Simultaneous RS232 & RS485 Access to C-More Controller Variables ..................... 54
3.2.3 Direct Drive Control ..................................................................................................... 54
3.2.4 Remote Setpoint Control ............................................................................................. 54