TPU2000/2000R Modbus/Modbus Plus Automation Guide
117
Fault or Operation Record Retrieval
Step 1.
Step 2.
Host Writes Data Control code : First Record, Next Record, or Oldest
Unreported
Record
Relay responds with Fault or Operation block.
If No Event in IED , Then respond with all registers = 0
If No
NEW
Event, Then respond with old event record.
EC
EC
EC
EC
Figure 5-39. 2 Winding Differential Fault Buffer
Differential Fault Record Reporting
There are two Differential Fault Record Buffers contained within the TPU2000R Modbus Register mapping. They
are 2 Winding Differential Fault Buffer information for the TPU2000 and TPU2000R and a 3 Winding Differential
Fault Buffer which is only available for the TPU2000R 3 Winding Unit.
Table 5-33 lists the register map for the 2 Winding buffer and Table 5-34 lists that for the 3 Winding unit.
Differential Fault Record Layout (TPU2000/TPU 2000R)
Data Control Register
Differential
Fault Data
DPU 2000 and
DPU 2000R
41665
41666
41745
Differential Fault
Data Control Register
Differential Fault
Data DPU 2000R
Only
43305
42306
42352
32 Faults in Stack Max..
32 Faults in Stack Max.
Fault Stack
Fault Stack
Differential Third
Winding Fault
EC
Figure 5-40. 3 Winding Differential Fault Buffer
Table 5-33. Differential 2 Winding Fault Record Register Definition
Register
Address
Item
Description (Multiplier if any)
41665
Differential 2 Winding Fault Control
Register
1 = First Record
2 = Next Record
3 = Oldest Unreported Record
Fault Record Control Register
Unsigned 16 Bit
1 = Fill 41666 through 41745 with First Record in Data
Buffer.
2 = Fill 41666 through 41745 with next Record Data
pointed to in buffer.
3 = Fill 41666 through 41745 with the last (oldest