06/05/13
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
•
Ph: 800-526- 0288
Page
95
of
112
GF-115-C
Modulex E8 Controller and BCM
Operations and Maintenance Manual
OMM-0084_0D
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
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
1
Unit Status
enum (1, 3, 5)
1 = Standby (ready to run but not
fired)
3 = Remote (fired)
5 = Fault (failure detected)
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.
