Areva MiCOM P921 - Page 244

P92x/EN CT/E11 Technical Guide
Modbus Protocol
Page 54/118 MiCOM P921-P922-P923
PRODUCTS
CODE DESCRIPTION
P921 P922 P923
Unsigned integer : MiCOM relay status X X X
Bit 0 : Watchdog
Bit 1 : Communication failure
Bit 2 : EEPROM data failure
Bit 3 : Analog failure
Bit 4 : Datation
Bit 5 : EEPROM calibration failure
Bit 6 : RAM memory failure
F45
Bit 7 to 15 : Reserved
F46 Unsigned integer: disturbance record
acknowledgement
Bit 0 : Reserved
Bit 1 : Reserved
Bit 2 : Acknowledgement of the oldest disturbance
record (manually)
X
X
X
X
X
X
X
X
Unsigned integer : Information generated by the
undervoltage protection
XXX
Bit 0 : instantaneous information threshold phase
(V<) or
(V<<) or (V<<<)
Bit 1 : instantaneous information VA
Bit 2 : instantaneous information VB
Bit 3 : instantaneous information VC
Bit 4 : reserved
Bit 5 : instantaneous information (V<) or (V<<) or
(V<<<)
Bit 6 : time delayed information (tV<) or (tV<<) or
(tV<<<)
F47
Bits 7 to 15 : reserved
Unsigned integer : Information generated by the
"Negative seq. Overvoltage" and "Positive seq.
undervoltage"
XX
Bit 0 : instantaneous information threshold V2>
Bit 1 : instantaneous information V2>
Bit 2 : time delayed information V2>
Bit 3 : instantaneous information threshold V2>>
Bit 4 : instantaneous information V2>>
F48
Bit 5 : time delayed information V2 >>