Preferred Instruments - Feedwater Center
10
Modbus
Coil
Address
Read/
Write
Allowed
coil = 0
coil = 1
00001
00002
00003 ST Level Control Valve Auto/Manual
Y
Auto
Manual
00004
00005
00006
00007
00008 Transfer Pump Quantity Auto/Manual
Y
Auto
Manual
00009 Transfer Pump Lead Select Auto/Manual
Y
Rotate
Manual
00010 Transfer Pump Fault Reset
Y
Reset
Normal
00011 Remote Alarm Silence
Y
Reset
Normal
00012
00013
00014
00015
00016
00017
00018 Has Makeup Water Flow
Y
NOT USED INSTAL’D
00019 Has Makeup Water Pressure
Y
NOT USED INSTAL’D
00020 Has Condensate Return Temperature
Y
NOT USED INSTAL’D
00021 Has Condensate Return Flow
Y
NOT USED INSTAL’D
00022 Has Surge Tank Installed
Y
Valve
PUMP
00023
00024
00025
00026
00027 Transfer Pump Always On
Y
NO
YES
00028
00029 Sychronize Time
Y
FALSE
TRUE
00030 Has Surge Tank Level
Y
NOT USED INSTAL’D
00031
00032
00033 spare
00034 spare
00035 spare
00036 spare
00037 spare
00038 spare
00039 spare
00040 Common Alarm
Alarm
Normal
00041
00042
00043
00044
MODBUS ADDRESSING
Note: Modbus address “00xxx” means Holding Register xxx
