GE EPM 9650/9800 manual Modifications to Time of Use, Register Meaning, Value

FLASH Programmable Settings Checksum (Register 65413).

17.Upgrade software transmits the Reset to Normal Operation Command (writes 0100H to Register 65410).

18.Upgrade software polls EPM Comm Operation Indicator (Register 65409) until it returns that the unit is in Normal Operation.

Note: Register 00001 in our mapping is equivalent to 40001 in most third party polling packages and RTUs.

5.4: Modifications to Time of Use

Time of Use had provided delta values computed at two time rates - Monthly and Seasonally. The following modifications will be provided in the EPM 9650 and 9800 meters.

The functionality of what had been the Current Season/Prior Season registers are being altered to provide options of Seasonal, Monthly, Weekly, Daily or Hourly behavior. As such, they will no longer be properly called Current Season or Prior Season. Depending on the storage rate chosen, the "Current Season" will be referred to as the "Active Season", "Active Week", etc, while the "Prior Season" will be referred to as the "Frozen Season", "Frozen Week", etc. This will not change the operation of the "Current Month" or "Prior Month" registers, which will continue to operate according to the Monthly Billing Dates entered in the Time of Use calendar.

Additionally, a new capability is being added to the behavior of both the Current Month and Active registers when a new period starts. In the previous implementation, the Current Month or Current Season registers are cleared at the start of a new month or season. This is being altered to allow the option of not clearing at the start of a new period.

The following settings are being added to the Time of Use Calendars:

Register	Meaning
35730 (0x08B91)	Clear on new period / Freeze Period Selection
35731 (0x08B92)	Weekly Freeze day of week / Freeze Hour

Clear on New Period / Freeze Period Selection

The most significant byte indicates whether the Current Monthly and Active registers should clear when a new period starts. The value 0x000 indicates that they should clear, compatible with the previous implementation, while the values 0x001 - 0x0FF indicate that they should continue the Current Month or Active registers where the Prior Month or Frozen registers left off.

The least significant byte indicates the period to use for the Active and Frozen registers (what had been the Current and Previous Season registers).

Value	Meaning
0x000	Seasonal
0x001	Weekly

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