Areva MiCOM P921, Technical Manual, Page: 243 / 376

Technical Guide P92x/EN CT/E11
Modbus Protocol
MiCOM P921-P922-P923 Page 53/118
PRODUCTS
CODE DESCRIPTION
P921 P922 P923
Bit 8 : instantaneous information f5
Bit 9 : time delayed information f5
Bit 10 : instantaneous information f6 F37
Bit 11 : time delayed information f6
Unsigned integer : Auxiliary inputs status and CB
supervision data
Bit 0 : Logical equation A"
X X X
Bit 1 : Logical equation B" X X X
Bit 2 : Logical equation : time delayed information" X X X
Bit 3 : time delayed information "tAUX1" X X X
Bit 4 : time delayed information "tAUX2" X X X
Bit 5 : Max CB operating time reached X X
Bit 6 : Max CB operations reached X X
Bit 7 : Max CB closing time reached X X
Bit 8 : CB alarm (logical "OR" between bits 5, 6
and 7)
X X
Bit 9 : Frequency out of range: f
measured
> fn+20Hz
or f
measured
< fn-20Hz
X X
Bit 10 : Logical equation C" X
Bit 11 : Logical equation D" X
Bit 12 : Frequency out of range due to
undervoltage blocking
X
F38
Bits 13 to 15 : reserved X X X
F39 Reserved
F40 Reserved
Unsigned integer : Rear communication protocol
(RS485)
X X X
0 : Modbus RTU
1 : Courier KBus
F41
2 : IEC 60870-5-103
Unsigned integer : Time period for calculation of
average/max values
X X F42
5, 10, 15, 30 or 60 min