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Appendix A - Modbus Variable Map
Modbus
Modbus
Modbus
Register
Register
Register
Variable
Variable
Variable
Register
Register
Register
Access
Access
Access
Size
Size
Size
Notes/Units
Notes/Units
Notes/Units
404115
Display Alarms Low Word
Read Only
16 Bit
See Table 5 for bit definitions.
404116
Pump Alarms 2 High Word
Read Only
16 Bit
See Table 5 for bit definitions.
404117
Pump Alarms 2 Low Word
Read Only
16 Bit
See Table 5 for bit definitions.
404118
System Type
Read Only
16 Bit
0 = Single lower,
1 = Dual lower
404119
Run/Stop Switch State
Read Only
16 Bit
0 = Switch closed (Stop state),
1 = Switch open (Run state)
Extended Modbus Variables
The registers shown in this section are intended for advanced integration solutions, where the user desires
full control of the system by the PLC. For optimal communication latency, it is recommended that only the
registers which will be monitored and changed on a regular basis be mapped and the remaining parameters
be configured with the display.
404150
Pressure Minimum
Read Only
16 Bit
Pressure units, see Table 7.
404151
Pressure Target
Read Only
16 Bit
Pressure units, see Table 7.
404152
Pressure Maximum
Read Only
16 Bit
Pressure units, see Table 7.
404153
Flow Minimum
Read Only
16 Bit
Flow units, see Table 7.
404154
Flow Target
Read Only
16 Bit
Flow units, see Table 7.
404155
Flow Maximum
Read Only
16 Bit
Flow units, see Table 7.
404156
Mode
Read Only
16 Bit
0 = pressure,
1 = flow
404157
BPR % Open
Read Only
16 Bit
Value will be 0-100
(Approximately 1-100 psi, see
manual 332142 for information
on BPR control kit)
404158
Pressure/Force Min Alarm Type
Read Only
16 Bit
0 = limit, 1 = deviation, 2 =
alarm
404159
Pressure/Force Max Alarm Type
Read Only
16 Bit
0 = limit, 1 = deviation, 2 =
alarm
404160
Flow Min Alarm Type
Read Only
16 Bit
0 = limit, 1 = deviation, 2 =
alarm
404161
Flow Max Alarm Type
Read Only
16 Bit
0 = limit, 1 = deviation, 2 =
alarm
3A2527H
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