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Table 16 – PLC Controller Modbus RTU Parameters (continued)
Modbus Register
Data Format
30003
30004
Data
Access Level
WORD
BOOL
Bit 0
BOOL
Bit 1
BOOL
Bit 2
BOOL
Bit 3
BOOL
Bit 4
BOOL
Bit 5
BOOL
Bit 6
BOOL
Bit 7
BOOL
Bit 8
BOOL
Bit 9
BOOL
Bit 10
BOOL
Bit 11
BOOL
Bit 12
BOOL
Bit 13
BOOL
Bit 14
BOOL
Bit 15
WORD
BOOL
Bit 0
BOOL
Bit 1
BOOL
Bit 2
BOOL
Bit 3
BOOL
Bit 4
BOOL
Bit 5
BOOL
Bit 6
BOOL
Bit 7
BOOL
Bit 8
BOOL
Bit 9
BOOL
Bit 10
BOOL
Bit 11
BOOL
Bit 12
BOOL
Bit 13
BOOL
Bit 14
BOOL
Bit 15
Read
SYSTEM ALARMS/WARNINGS
Read
Return Water High
Read
Return Water High High
Read
Suction Pressure Sensor Alarm
Read
Discharge Pressure Sensor Alarm
Read
Suction Temperature Sensor Alarm
Read
Discharge Temperature Sensor Alarm
Read
Fan 3 Overload Alarm
Read
Fan 4 Overload Alarm
Read
Fan 5 Overload Alarm
Read
Fan 6 Overload Alarm
Read
Return Water Sensor
Read
Phase Loss
Read
Compressor 1 Fault
Read
Low Low Pressure Alarm
Read
System Stopping
Read
System Starting
Read
SYSTEM ALARMS/WARNINGS
Read
PLC Battery Alarm
Read
Discharge Pressure Soft Alarm
Read
Compressor 2 Fault
Read
Compressor 3 Fault
Read
Not used
Read
Not used
Read
Not used
Read
Not used
Read
Not used
Read
Not used
Read
Not used
Read
Not used
Read
Not used
Read
Not used
Read
Not used
Read
Not used
26
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