GE EPM 9650/9800 manual Limit Snapshot Log Format

32nd Limit's Value 1 Comparison. A bit value of 1 means that the Comparison is exceeded: less than or equal to Value 1 for a below limit, greater than Value 1 for an above limit. A bit value of 0 means that the Comparison is not exceeded: greater than Value 1 for a below limit, less than or equal to Value 1 for an above limit.

•The next four bytes are the same bitmap as above, but for the current state of the Value 2 Comparisons of the Limits.

•The next four bytes are a bitmap for the delta of the Value 1 Comparisons of the Limits. The order of the bits is the same as above. A bit value of 1 means that the state of the Value 1 Comparison changed since the last Alarm occurred; a bit value of 0 means that the state of the Value 1 Comparison did not change since the last Alarm.

•The next four bytes are the same bitmap as above, but for the delta of the Value 2 Comparisons of the limits.

•The next four bytes are a bitmap for the current state of the Combination of the Limits. The first bit(the most significant bit of the first byte) is the current state of the 1st Limit’s Combination of the Value 1 Comparison and the Value 2 Comparison. The last bit (the least significant bit of the fourth byte) is the current state of the 32nd Limit’s Combination of the Value 1 Comparison and the Value 2 comparison. A bit value of 1 means that the Combination is true, a bit value of 0 means that the Combination is false.

•The last 4 bytes are the same bitmap as above, but for the delta of the Combination of the Limits.

6.5: Limit Snapshot Log Format

Profile Information is in Programmable Settings Block/Limit Settings (Comm version 102 or above).

Limit Data Pointers: (45077-45204)

These Registers indicate which values are being monitored by limits. Each Data Pointer has the following 8 (eight) byte structure:

Size	Format	Description
2 byte	unsigned int	Line Number
1 byte	unsigned char	Point number
1 byte	unsigned char	Limit Mode
2 byte	unsigned int	Comparison 1 Value
2 byte	unsigned int	Comparison 2 Value

A Line Number is an index into the Communication Table.

Example: Line Number 11 is for the 12th line in the Communication Table, 0.1 second Phase-to- Neutral Voltages. Data Pointers with Line Numbers greater than the number of lines in the table are ignored.

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