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Operating Instructions

Modulex Boiler

Communications

Module - BCM

Summary of Contents for BCM

Page 1: ...Operating Instructions Modulex Boiler Communications Module BCM ...

Page 2: ...ctions are illustrated and described in Figure 1 2 The Modulex Boiler is shipped with the BCM a third Control Switch is mounted above the BCM This switch is used to enable disable the e Bus connection between the E8 and BCM Controllers Refer to paragraph 1 4 3 for details Figure 1 2 BCM Controls and Indicators CONTROL INDICATOR ENABLE DISABLE SWITCH I 0 RESET SWITCH DL1 Yellow LED DL2 Red LED DL3 ...

Page 3: ...at Figure 1 4 BCM Back Up Controller Wiring 1 3 BCM CONFIGURED AS BACK UP CONTROLLER When the BCM is configured as the Back Up Controller for the E8 it will assume control of the Modulex Boiler if the E8 fails In the event of an E8 Controller failure the BCM will operate the Modulex Boiler in the Constant Setpoint Mode default setpoint C The primary Boiler 82 Pump must also be wired to the BCM so ...

Page 4: ...are provided in Appendix B of this document 1 4 1 OPERATING SCENARIO Each Modulex Boiler is equipped with its own BCM to allow Modbus Network monitoring and control The Master can control the Networked Modulex Boilers utilizing either Remote Setpoint or Modulation Level signaling In the event that the external control signal from the EMS or BAS is lost the BCM will assume control of the Modulex Bo...

Page 5: ... position ON OFF switch on the BCM BCM 2 Postion ON OFF Switch I 1b See NOTE 1 Below O 0 See NOTE 2 Below II 1a See NOTE 3 Below The BCM is the Gate way for Mo dbus and external control The E8 does not control the boiler and the BCM will not take over the boiler if the Modbus signal fails The BCM is the Gate way for Mo dbus and external control The E8 does not control the boiler and the BCM will t...

Page 6: ... only as Slave devices on a Modbus Network Since the Slaves are connected in a Daisy Chain configuration the terminating resistor must be enabled only in the last BCM Controller in the chain Enabling the terminating resistor is accomplished by positioning jumper JP1 as shown in Figure 1 9 only on the BCM Board contained in the last BCM Controller As mentioned in paragraph 1 5 1 when the controllin...

Page 7: ...7 ...

Page 8: ...essary The changes to the Settings Registers are stored during power down 1 7 5 EMS OR BAS SET UP AS MASTER TO BCM CONTROLLER SLAVES Ref u er to the set up instructions in the man facturer s equip ment manual for the Energy Management System EMS or Building Automation System BAS being used as the control ling Master 1 7 MODBUS SOFTWARE SET UP The following paragraphs provide the information and pr...

Page 9: ...edium EMS Master to BCM Slave RS 485 Alowable Cable Length Address Support From Master EMS T rasmission Mode Support Timing specifications Baud Rate Data Framing Message Framing Character Framing Heartbeat Timeout DESCRIPTION B 1 2 Modbus Support Requirements The Modb r m to the suppor us Netwo k must confor t requirements listed in T able B 2 RS485 2 Wire Differential Bus With Shield 4000 Feet Ma...

Page 10: ...sidual flame 42 Outlet temperature sensor fault 38 Other conditions not listed above enum 1 3 5 1 Standby ready to run but not fired 3 Remote fired 5 Fault failure detected B 2 2 BCM CONTROLLER STANDARD HOLDING REGISTER ASSIGNMENTS The BCM Controller Holding Registers contain functions that are Read Only Write Only or both Read Write The address assignments for these functions are listed in T able...

Page 11: ...11 Table B 4 BCM Standard Holding Register Address Mapping ...

Page 12: ...Modulex Controller Operation Appendix B 12 Table B 4 BCM Standard Holding Register Address Mapping Cont ...

Page 13: ...13 Table B 4 BCM Standard Holding Register Address Mapping Cont APPENDIX B ...

Page 14: ...Modulex Controller Operation Appendix B 14 Table B 4 BCM Standard Holding Register Address Mapping Cont APPENDIX B ...

Page 15: ... utomatic Heating P Ltd ABN 90 446 545 923 DISTRIBUTED BY Telephone Facsimile Email 1800 337 959 61 3 9310 5655 sales automaticheating com au P O Box 35 Epping VIC 3076 Australia www automaticheating com au ...

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