GE MiCOM P40 Agile Technical Manual page 460

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Chapter 18 - Communications
MODBUS registers
MODBUS Register
3x00001
3x00800
3x00801
4x00250
4x00400
3x00930 - 3x00933
3x00802
3x00803 - 3x00929
3x00934
4x00251
Note:
Register addresses are provided in reference code + address format. E.g. 4x00001 is reference code 4x, address 1 (which is
specified as function code 03, address 0x0000 in the MODBUS specification).
The disturbance record status register will report one of the following values:
434
Name
Status register
No of stored disturbances
Unique identifier of the oldest
disturbance record
Manual disturbance record
selection register
Record selection command
register
Record time stamp
No of registers in data page
Data page registers
Disturbance record status
register
Data file format selection
Description
Provides the status of the relay as bit flags:
b0: Out of service
b1: Minor self test failure
b2: Event
b3: Time synchronization
b4: Disturbance
b5: Fault
b6: Trip
b7: Alarm
b8 to b15: Unused
A '1' on b4 indicates the presence of a disturbance
Indicates the total number of disturbance records currently stored in the
relay, both extracted and non-extracted.
Indicates the unique identifier value for the oldest disturbance record
stored in the relay. This is an integer value used in conjunction with the
'Number of stored disturbances' value to calculate a value for manually
selecting records.
This register is used to manually select disturbance records. The values
written to this cell are an offset of the unique identifier value for the
oldest record. The offset value, which ranges from 0 to the Number of
stored disturbances - 1, is added to the identifier of the oldest record to
generate the identifier of the required record.
This register is used during the extraction process and has a number of
commands. These are:
b0: Select next event
b1: Accept event
b2: Select next disturbance record
b3: Accept disturbance record
b4: Select next page of disturbance data
b5: Select data file
These registers return the timestamp of the disturbance record.
This register informs the master station of the number of registers in the
data page that are populated.
These 127 registers are used to transfer data from the relay to the master
station. They are 16-bit unsigned integers.
The disturbance record status register is used during the extraction
process to indicate to the master station when data is ready for
extraction. See next table.
This is used to select the required data file format. This is reserved for
future use.
P14x
P14xEd1-TM-EN-1

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