38
PT UNIT USER MANUAL
APRIL 2023 www.eaton.com.cn
Table A8. Historical Trip/Major Alarm Time.
Register Format
R/W Descriptions
Units
408193
Encoded
R/W Event Type:
Trip = 80FF
16
Alarm = 81FF
16
408194
Unsigned32
R
Earliest Event ID
408196
Unsigned32
R
Latest Event ID
408198
Unsigned32
R/W Requested Event ID
408200
Unsigned32
R
Previous Event ID
408202
Unsigned32
R
Next Event ID
408204
Date/Time
R
Date/Time
408212
Encoded
R
Format of Data:
Trip = 0004
16
,
Major Alarm = 0005
16
408213
B15-B00
R
Object Validity Bits
408214
B31-B16
R
Object Validity Bits
408215
Encoded
R
Status Cause (Primary,
Secondary, cause)
408217
Unsigned32
R
IA
A
408219
Unsigned32
R
IB
A
408221
Unsigned32
R
IC
A
408223
Unsigned32
R
IN
A
408225
Unsigned32
R
IG Source
A
408227
Unsigned32
R
IG Residual
A
408229
Unsigned16
R
VAB
V
408230
Unsigned16
R
VBC
V
408231
Unsigned16
R
VCA
V
408232
Unsigned16
R
VAN
V
408233
Unsigned16
R
VBN
V
408234
Unsigned16
R
VCN
V
408235
Signed32
R
Real 3 Phase Power
W
408237
Signed32
R
Reactive 3 Phase Power
VAR
408239
Unsigned32
R
Apparent 3 Phase Power
VA
408241
Signed32
R
Real 3 Phase Power Demand
W
408243
Signed32
R
Reactive 3 Phase Power Demand VAR
408245
Unsigned32
R
Apparent 3 Phase Power
Demand
VA
408247
Singed16
R
Device Temperature
1/10 °C
408248
Unsigned16
R
Frequency
1/10 Hz
408249
Singed16
R
Apparent Power Factor
1/100 pf
408250
Unsigned16
R
Operations Count
408251
B31-B00
R
Binary Status with Validity Bits
Table A9. Major Alarm Event.
Register Format
R/W
Descriptions
Units
408193
Encoded
R/W
Event type: Alarm = 81FF
16
408194
Unsigned32
R
Earliest Event ID
408196
Unsigned32
R
Latest Event ID
408198
Unsigned32
R/W
Requested Event ID
408200
Unsigned32
R
Previous Event ID
408202
Unsigned32
R
Next Event ID
408204
Date/Time
R
Date/Time
408212
Encoded
R
Format of Data:
Minor Alarm = 0006
16
408213
B0
R
Object Validity Bits
408214
Encoded
R
Status Cause (Primary, Secondary,
Cause)
A.3.5 Block of Registers
A block of registers can be established in trip unit to remap
the data object registers. The block of registers is stored
in non-volatile memory. Function code 16 is used to load
the object assignments for the block of registers. The
block assignments are stored beginning at 401001/420481
(0x03E8/0x5000). Only the first data object register address is
assigned within the block of registers. For example, although
data object IA occupies register 0x1202 and 0x1203, only
register 0x1202 is loaded into the block of assignment
registers. Verification of this block of assignment registers
can be read from trip unit with a function code 03 or 04 from
these 401001/420481 (0x03E8/0x5000) registers.
Data pertaining to the objects configured in the block of
assignment registers is mapped into registers starting
at 401201/420737 (0x04B0/0x5100) and continuing in
successive order for each object assigned. The number
of objects and their placement order in this data block of
registers is dependent on the configuration of the block
of assignment registers. The total number of data block of
registers is limited to 100.
The data can be obtained from the data block of registers by
a read function code 03 or 04. The address of the starting
object must be aligned with a starting address of an object
within the data block of registers. The number of registers to
obtain must align with an ending address of an object within
the data block of registers.
Appendix A - Modbus Communication Port Setting