GE EPM 9650/9800 manual Type F15 Limit States, Bits Points Limit Passed, Interpretation

In Modbus, a value will be returned based on the type of reading.

Negative Maximums and Positive Minimums return: 7FFFFFFFH or 2,147,483,647.

Positive Maximums and Negative Minimums return: 80000000H or +/- 2,147,483,647.

No Timestamp will be assigned to the reading.

3.15: Type F15 Limit States

Length: 1 Register (2 bytes)

This register has two bytes. Each byte has eight bits. The bits in these bytes are associated with the 16 Limits, the most significant bit of the most significant byte with Limit 1 (or 17), through to the least significant bit of the least significant byte with Limit 16 (or 32).

A bit value of 1 means that the particular limit has been passed, while a bit value of 0 means that the particular limit has not been passed.

Example:

Register 02769, Limit States, Value 1 Comparison, 1–16, might contain the following data:

Address								02769
Value								0461H
Bytes					04H							61H
Bits	0	0	0	0	0	1	0	0	0	1	1	0	0	0	0	1
Points	0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
Limit	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16
Passed	No	No No No No Yes No						No	No	Yes Yes No No No No						Yes
Interpretation		Limits 6, 10, 11 and 16 are currently passed; all others are not passed.

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