AERCO Modbus Communications Manual - Manual (Page 4)

GF-114
MODBUS
Communication
OMM-0035_0C USER MANUAL Contents
Page 4 of 200 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 • Ph.: 800-526-0288 05/18/12
3.2.5 Combination Control (BMS/ACS Only) ........................................................................ 55
3.2.6 Physical Slave Address Zero ...................................................................................... 55
3.3 BMS/BMS II/ACS STANDARD APPLICATION OPERATIONS ........................................ 55
3.3.1 Password Protection for BMS/BMS II/ACS Input and Holding Register Access ......... 55
3.3.2 Remote Setpoint Control of BMS/BMS II/ACS Slave By EMS Master ........................ 55
3.3.3 BMS/BMS II/ACS Master Control of C-More Slaves Via Network ............................... 56
3.3.4 BMS Combination Mode Boiler Control of C-More Slaves (BMS and ACS Only) ....... 56
CHAPTER 4: MODBUS NETWORK HARDWARE SETUP & INSTALLATION . 57
4.1 INTRODUCTION................................................................................................................. 57
4.2 PHYSICAL MODBUS RS485 NETWORK WIRING CONNECTIONS ............................... 57
4.2.1 BMS Slave To EMS Master Wiring Connections ........................................................ 57
4.2.2 BMS II/ACS Slave To EMS Master Wiring Connections ............................................. 61
4.2.3 BMS/BMS II/ACS Master To C-More Boiler Controller Slaves .................................... 64
4.2.4 C-More Slaves To BMS/BMS II/ACS or EMS Master ................................................. 66
4.3 RS485 LOOP TERMINATING RESISTORS AND BIAS .................................................... 66
4.3.1 BMS Terminating Resistor .......................................................................................... 66
4.3.2 C-More Boiler Controller Terminating Resistor and Bias ............................................ 66
4.4 MODBUS NETWORK WIRING DIAGRAMS ...................................................................... 70
4.4.1 Wiring Diagrams for Master EMS Controlling BMS Slaves With Legacy (PWM) Boilers
70
4.4.2 Wiring Diagram for Master BMS/BMS II/ACS Controlling Networked C-More Slaves 70
4.4.3 Wiring Diagram For EMS Master Controlling C-More Controller Slaves ..................... 70
CHAPTER 5: MODBUS SOFTWARE SETUP: C-MORE & BMS ...................... 75
5.1 INTRODUCTION................................................................................................................. 75
5.2 C-MORE BOILER CONTROLLER SETUP FOR MODBUS OPERATION ........................ 75
5.2.1 Monitoring and Configuration Control .......................................................................... 76
5.2.2 Modbus Direct Drive Control and Monitoring .............................................................. 76
5.2.3 Modbus Remote Setpoint Control ............................................................................... 76
5.3 BMS SETUP FOR OPERATION AS A SLAVE TO AN EMS MASTER ............................ 77
5.3.1 BMS Monitoring and Configuration By An EMS Master .............................................. 77
5.3.2 BMS Modbus Remote Setpoint Control By An EMS Master ....................................... 77
5.4 BMS SETUP AS MASTER TO C-MORE BOILER CONTROLLERS ................................ 78