GE P741 Technical Manual page 470

Troubleshooting
MiCOM P741, P742, P743
Decimal
Hexa Code
code
Logical OR
04xx
08xx
1100
1200
2000
4008
4010
4018
8001
8002
8003
8004
8005
8006
8007
Logical OR
0200
0408
0410
0808
0810
1008
1010
2008
2010
4008
4010
8008
8010
Logical OR
Problem
See lines included in the logical OR See lines included
Ex: 5010 = 4010 OR 1010
P742 / P743 - OPERATING MODE
PU_OPER_MAJOR
Topology autotest
Fixed Scheme Logic Autotest
Measurement or Topology autotest
Measurement or Topology autotest
System error
External autotest RAM
Interruptions autotest
Comm. board autotest
Main to Coprocessor
communication
Main to Coprocessor
communication
Main to Coprocessor
communication
Main to Coprocessor
communication
Main to Coprocessor
communication
Main to Coprocessor
communication
Main to Coprocessor
communication - no IT
See lines included in the logical OR See lines included
PU_OPER_PERIPH
Analogue module acquisition
problem
Relay 3 board missing
Relay 3 board writing error
Opto 3 board missing
Opto 3 board read error
Relay 2 board missing
Relay 2 board writing error
Opto 2 board missing
Opto 2 board read error
Relay 1 board missing
Relay 1 board writing error
Opto 1 board missing
Opto 1 board read error
See lines included in the logical OR See lines included
Ex: a010 = 2010 OR 8010
P74x/EN TS/Na7
Verify or modify
Coprocessor firmware
Coprocessor firmware
Coprocessor firmware
Coprocessor firmware
Coprocessor firmware
Coprocessor
Coprocessor
Coprocessor
Coprocessor or Main board
Coprocessor or Main board
Coprocessor or Main board
Coprocessor or Main board
Coprocessor or Main board
Coprocessor or Main board
Coprocessor address or
Coprocessor or Main board
Analogue module
Relay 3 board or Relay 3 board
address
Relay 3 board
Opto 3 board or Opto 3 board
address
Opto 3 board
Relay 2 board or Relay 2 board
address
Relay 2 board
Opto 2 board or Opto 2 board
address
Opto 2 board
Relay 1 board or Relay 1 board
address
Relay 1 board
Opto 1 board or Opto 1 board
address
Opto 1 board
(TS) 12-19
TS