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Historical Pressure Readings:
The historical pressure readings can be viewed from Modbus registers 40122 through 40129. Here it is possible to scroll through
the entire log and set the log pointer to the most current record. Register 40122 contains a number representing the actual log
number entry location in the controller. Register 40123 contains a number representing the logged pressure reading. Registers
40124 through 40129 show the date and time stamp information for the log record being pointed to.
To maneuver through the log:
Toggling bit 5 or writing a 32 to register 40001 will increment the log by one entry.
Toggling bit 6 or writing a 64 to register 40001 will decrement the log by one entry.
Toggling bit 8 or writing a 256 to register 40001 will set the log to view the most current log entry.
It is recommended to set the log to the most current entry before scrolling. When scrolling, it is possible to move forward and
backward through roughly a full weeks worth of data. See figure 1.10 for register interpretation.
Figure 1.10
Description
Modbus Registers
Usage Notes For Read Only Registers
PSI Historical Log Index
040122
PSI Historical Log Index Value For Record Being Pointed To
PSI Historical Log Pressure
040123
PSI Historical Log PSI That Occurred 0-300 PSI
PSI Historical Log Day
040124
PSI Historical Log Day PSI Occured 1-12
PSI Historical Log Month
040125
PSI Historical Log Month PSI Occured 1-31
PSI Historical Log Year
040126
PSI Historical Log Year PSI Occurred 00-99
PSI Historical Log Hours
040127
PSI Historical Log Hour PSI Occurred 1-24
PSI Historical Log Minutes
040128
PSI Historical Log Minute PSI Occurred 0-59
PSI Historical Log Seconds
040129
PSI Historical Log Second PSI Occurred 0-59
**Toggle Bit 5 Of Modbus Register 040001 Or PLC Address V9001.5 To Increment PSI Historical Log Record 0-499**
**Toggle Bit 6 Of Modbus Register 040001 Or PLC Address V9001.6 To Decrement PSI Historical Log Record 0-499**
**Toggle Bit 8 Of Modbus Register 040001 Or PLC Address V9000.8 To View Most Current Historical PSI Log Record**
