74
4 Go to the correct Point number within that file
Point number is determined by the formula:
Item number – [FILE X 128] = Point Number
E.G. 1 If the user the wishes to read Voltage Line 2 (Item No 2)
By applying the formula: 2 - [0 X 128] = 2
File = 0 and Point within that file = 2
E.G. 2 If the user the wishes to read 30
th
Harmonics for Volts Line1
(Item No 330)
By applying the formula: 330 - [2 X 128] = 74
File = 2 and Point within that file = 74
E.G. 3 If the user the wishes to read 7
th
Harmonic for Current Line 3
(Item No 467)
By applying the formula: 467 - [3 X 128] = 83
File = 3 and Point number within that file = 83
More Examples
E.G. No Item
No
Field Description File
Point
1 2 Voltage Line 2 0 2
2 330 30
th
Harmonics for Volts Line1 2 74
3 467 7
th
Harmonic for Current Line 3 3 83
4 128 0 128
5 129 1 1
6 256 1 128
7 257 2 1
8 384 20
th
Harmonics for Volts Line 3 2 128
9 385 21
st
Harmonics for Volts Line3 3 1
Table 6.4 Function Codes
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