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CHAPTER 1: COMMUNICATIONS GUIDE
345 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE
Code
Example: 1234.56 stored as 123456
i.e. 1st word: 0001 hex, 2nd word: E240 hex
F12
1st 16 bits
2nd 16 bits
Example: -123456 stored as -123456
i.e. 1st word: FFFE hex, 2nd word: 1DC0 hex
F13
1st 16 bits
2nd 16 bits
Example: -12345.6 stored as -123456
i.e. 1st word: FFFE hex, 2nd word: 1DC0 hex
F14
1st 16 bits
2nd 16 bits
Example: -1234.56 stored as -123456
i.e. 1st word: FFFE hex, 2nd word: 1DC0 hex
F15
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
Type
Definition
signed 32 bits
2's COMPLEMENT SIGNED LONG VALUE
High Order Word of Long Value
Low Order Word of Long Value
signed 32 bits
2's COMPLEMENT SIGNED LONG VALUE, 1
DECIMAL PLACE
High Order Word of Long Value
Low Order Word of Long Value
signed 32 bits
2's COMPLEMENT SIGNED LONG VALUE, 2
DECIMAL PLACES
High Order Word of Long Value
Low Order Word of Long Value
unsigned 16 bits
HARDWARE REVISION
Prototype
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
MODBUS MEMORY MAP
1–129
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