Automatic Heating BCM Manuel d'utilisation - Page 10

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Appendix B

B-2.

BCM CONTROLLER STANDARD HOLDING REGISTER ASSIGNMENTS

B-2.1 BCM Controller Standard Input Register Assignments

The BCM Controller has only two Read Only Input Register addresses as shown in Table B-3.

Table B-3. BCM Controller Standard Input Register Address Mapping

Modbus Data

Menu Item

Address

Status & Error Code

Unit Status

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 B-4 and are grouped into the following major categories:

Control Registers, Operating Data Registers, System Data Settings and T est Registers. Functions within each group

are not necessarily in hex address order.

The Read Only, Write Only or Read/Write status for each function in T able B-4 is shown in the Default/Comments

column.

enum (2,8,10,18,23,32,42,38)

2 = Standby

8 = High temperature switch open

10 =Low gas pressure switch open

18 =Air flow switch open during ignition

23 =Flame loss during run

32 =Residual 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)

Menu Item