Alarm event records

Each event is stored using two records:

A "primary" record, which is created when the insulation alarm or preventive insulation alarm occurs. This contains the insulation value.
A "secondary" record, which is created for the following type of events:
- Acknowledged insulation alarm
- Transient insulation alarm
- Power failure or power cycle
- Product error
- Injection disable
- Over capacitance
- Over voltage
NOTE: The listed secondary records are applicable for insulation alarm and preventive insulation alarm.

Register	Unit	Type	Range	Description
Word 1	–	Uint16	1...65535	Event record number
Word 2 Word 3 Word 4 Word 5	–	Uint64	–	Time tagging of event (using the same code as for the product date/time)
Word 6 Word 7	–	Uint32	0x00….0xFF 0x40, 0x20 1020...1021, 1110	Record identifier: Word 6, most significant byte: information for primary/secondary record. This field identifies the type of primary and secondary record. Word 6, least significant byte: type of data stored in the Value field. Word 7: address of the Modbus register that is the source of the data in the Value field.
Word 8 Word 9 Word 10 Word 11	–	Uint64	–	Depending on the type of record (primary or secondary): Primary record (when the event occurs): Insulation resistance value (in Ohm) when the event occurred (encoded in Float32 in the last 2 registers). Secondary record (for the earlier list of events) (encoded in Uint32 in the last 2 registers)
Word 12	–	Uint16	1...65534	Primary/secondary record identifier for the event: In the case of a primary record for an event, this identifier is an odd integer; numbering starts at 1 and the number is incremented by 2 for each new event. In the case of a secondary record for an event, this identifier is equal to the primary record identifier plus 1.

For the Word 6 (most significant bytes), the ranges are 0x00….0xFF. The assigned bytes for the primary and secondary events are listed as follows:

Event	Byte
Primary events
Preventive insulation alarm	0x01
Insulation alarm	0x02
Secondary events
Nominal	0x21
Transient insulation alarm	0x22
Acknowledged insulation alarm	0x23
Injection disabled	0x24
Over capacitance	0x25
Over voltage	0x26
Product error	0x27
Power failure or power cycle	0x28
Preventive Nominal	0x41
Preventive transient insulation alarm	0x42
Preventive acknowledged insulation alarm	0x43
Preventive injection disabled	0x44
Preventive over capacitance	0x45
Preventive over voltage	0x46
Preventive product error	0x47
Preventive power failure or power cycle	0x48

The next 2 records relate to an example insulation alarm that occurred on October 1, 2010 at 12:00 pm and was acknowledged at 12:29 pm.

Address		Register		Unit	Type	Value	Description
dec	hex	dec	hex	Unit	Type	Value	Description
20002	4E22	20003	4E23	–	Uint16	1	Record number
20003	4E23	20004	4E24	–	Uint64	10 0 10 1 12 0 0	Date when insulation alarm occurred (October 1, 2010, 12:00 pm)
20007	4E27	20008	4E28	–	Uint32	0x02 0x40 1020	Record identifier: Primary record plus secondary record Float32 value (insulation resistance) Value of register 1020 (register for insulation resistance monitoring)
20009	4E29	20010	4E2A	Ohm	Uint64	10000	Insulation resistance value at the time of the insulation alarm
20013	4E2D	20014	4E2E	–	Uint16	1	Secondary record identifier for the event

Address		Register		Unit	Type	Value	Description
dec	hex	dec	hex	Unit	Type	Value	Description
20014	4E2E	20015	4E2F	–	Uint16	2	Record number
20015	4E2F	20016	4E30	–	Uint64	10 0 10 1 12 29 0	Date when insulation alarm acknowledged (October 1, 2010, 12:29 pm)
20019	4E33	20020	4E34	–	Uint32	0x23 0x20 1110	Record identifier: Secondary record Uint32 value (alarm acknowledged) 1110 register value ( product status register).
20021	4E35	20022	4E36	–	Uint64	8	Value of insulation alarm register at the time of insulation alarm acknowledgement
20025	4E39	20026	4E3A	–	Uint16	2	Secondary record identifier for the event