Bcm Controller Standard Holding Register Assignments; Bcm Controller Standard Input Register Assignments - Watts AERCO EXT Installation, Operation & Maintenance Manual

Ufly Controller and BCM for Modulex EXT
CHAPTER 7: BCM MODBUS AND ADDRESS ASSIGNMENTS

7.2 BCM Controller Standard Holding Register Assignments

7.2.1 BCM Controller Standard Input Register Assignments

The BCM Controller has only two Read Only Input Register addresses as shown below.
TABLE 7-3: BCM Controller Standard Input Register Address Mapping
Modbus Data
Address
0
1
2 Flow Sensor Temp
3 Return Flow Temp
7.2.2 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 below and are grouped into
the following categories: Control Registers, Operating Data Registers, System Data Settings and
Test 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 Table 8-4 is shown in the
Default/Comments column.
OMM-0159_A • 6/28/2022
Menu Item
0 – 0xFFFF
LSB:
MSB:
Error Code
enum (1, 3, 5)
Unit Status
1 =
3 =
5 =
14
°
32
°
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Units and Range
Error Code
Identification code of
fault device:
0: BMM #0 to
7: BMM #7
255: BCM
Standby (ready to run but not fired)
Remote (fired)
Fault (failure detected)
to 248 F (-10 to 120 C) (Valve X10)
° ° °
to 248 F (0 to 120 C) (Valve X10)
° ° °
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