AERCO Modulex E8 Controller (and BCM) For Modulex EXT Boilers - Manual (Page 92)

E8 Controller and BCM for Modulex EXT
Installation, Operation & Maintenance Manual
CHAPTER 9: BCM MODBUS AND ADDRESS ASSIGNMENTS
Page 92 of 108 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0093_0A
PRI: 06/24/2013 Phone: 800-526-0288 GF-136-C
9.2 BCM Controller Standard Holding Register Assignments
9.2.1 BCM Controller Standard Input Register Assignments
The BCM Controller has only two Read Only Input Register addresses as shown in Table 9-3.
Table 9-3: BCM Controller Standard Input Register Address Mapping
Modbus
Data
Address
Menu Item Units and Range
0
Status & Error Code
0 – 0xFFFF
LSB: Error Code
MSB: Identification code
of fault device:
0: BMM #0 to
7: BMM #7
255: BCM
1
Unit Status
enum (1, 3, 5)
1 = Standby (ready to run but not
fired)
3 = Remote (fired)
5 = Fault (failure detected)
2 Flow Sensor Temp 14 ° to 212 ° F(-10 ° to 100 ° C) (Valve X10)
3 Return Flow Temp 32 ° to 212 ° F(0 ° to 100 ° C) (Valve X10)
9.2.2 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 Table 9-4 and are
grouped into the following major 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 9-4 is shown in the
Default/Comments column.