Reading of the instrument internal features
Access to the internal features reading submenu
Instrument type : DGN 75AC,
Identification numbers
Programme version
Programme version number
Option code
Option code value
Self diagnosis error
Type of error
Check sum display
Check sum value
Error messages
Value set out of range
Displayable value overstepping
Self-diagnosis error
S
About
d75AC
n
0
A0006
PrOG
01.00
OPtIO.
Ar---.
Err.
SAvE
YES
no
InF.
SuP.
CLr.M
0000
CH.SuM
FC4E
Configuration saving
Configuration saving
Saving
No saving
Further functions
Minimum value display
Maximum value display
Deleting of the min. and max.
Err.1
OL
Er.xxx
Address
1
2
3
Measures
voltage U
current I
network frequency
Format
integer
integer
integer
nb of words
1
1
1
99.. A
AN
NN
NE
EX
XE
E :: M
MO
OD
DB
BU
US
S
9.1 Table of the measure Modbus addresses
The value read in the 1st table gives the measure module.
To know the unit and decimal point of this measure, read them in the 2nd
table, the table of units and decimal points.
The unit and the decimal point do not vary. They depend on the pro-
grammed CT and VT ratios. Hence, the 2nd table does not need to be
read permanently.
Address
17
18
19
Format
integer
integer
integer
9.2 Table of the measure units and decimal points
unit : 0 to 4
0 : x1 1 : kilo 2 : mega 3 : giga 4 : tera
decimal point : 1 to 4
1 : x.xxx 2 : xx.xx 3 : xxx.x 4 : xxxx.
example : line current : value 5000 decimal point : 1 unit : 1
Î
value of the current : 5.000 kA
Decimal points and units of the measures
dec. point (top weight) / unit (low weight)
voltage U
dec. point (top weight) / unit (low weight)
current I
dec. point (top weight) / unit (low weight)
network frequency
