Areva MiCOM P921, Technical Manual, Page: 241 / 376

Technical Guide P92x/EN CT/E11
Modbus Protocol
MiCOM P921-P922-P923 Page 51/118
PRODUCTS
CODE DESCRIPTION
P921 P922 P923
Selection of the default display
1 : RMS value Va or Vab
X X X
2 : RMS value Vb or Vbc X X X
3 : RMS value Vc or Vca X X X
4 : RMS value V0 X X X
5 : frequency X X
6 : V1 X X
F26
7 : V2 X X
Unsigned integer : Selection of the type of
temporisation
X X X
0 : DMT time delay
F27
1 : IDMT time delay
F28 Reserved X X X
Unsigned integer : Modbus communication X X X
0 : 1 bit stop
F29
1 : 2 bits stop
Unsigned integer : Rear communication X X X
0 : Communication non available
F30
1 : Communication available
Unsigned integer : Number of disturbance records
available
X X
0 : None
...
F31
5 : 5 Disturbance Records available
Unsigned integer : Selection of the trigger mode
for the disturbance recorder
X X
0 : Instantaneous information
F32
1 : Time delayed information
F33 Unsigned integer : type of date used by the
modbus communication
0 : Modbus date
1 : IEC date
X X X