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isoGEN523_D00320_04_M_XXEN/06.2018
9. IsoData data string
In IsoData mode, the ISOMETER® continuously sends the whole data string with a cycle
time of approximately 1 second. Communication with the ISOMETER® in this mode is
not possible and no additional sender may be connected via the RS-485 bus cable.
IsoData is activated when the menu item is set to Adr = 0.
Transmission from the ISOMETER® via the IsoData protocol can be stopped by sending
the command "Adr3" during an interval.
String
Description
!;
Start symbol
v;
Insulation fault location ' '/'+'/'-'
1234, 5;
Insulation resistance
R
F
[kΩ]
12345;
System leakage capacitance
C
e
[nF] (only with setting "GEn")
123456;
Reserved
+1234;
Nominal system voltage
U
n
[V
trueRMS
]
Nominal system voltage type: AC or unknown: ' ' DC: '+'/'-'
+1234;
Residual voltage
U
L1e
[V
DC
]
+1234;
Residual voltage
U
L2e
[V
DC
]
+123;
Insulation fault location -100 … +100 [%]
123456;
Reserved
1234;
Alarm message [hexadecimal] (without leading "0x")
The alarms are included in this value with the OR function.
Assignment of the alarms:
0x0002 Device error
0x0004 Prewarning insulation resistance
R
F
at
L1/+
0x0008 Prewarning insulation resistance
R
F
at L2/-
0x000C Prewarning insulation resistance
R
F
symmetrical
0x0010 Alarm insulation resistance
R
F
at L1/+
0x0020 Alarm insulation resistance
R
F
at L2/-
0x0030 Alarm insulation resistance
R
F
symmetrical
0x0040 Alarm undervoltage
U
n
0x0080 Alarm overvoltage
U
n
0x0100 Message system test
0x0200 Device start with alarm
12
Update counter, consecutively counts from 0 to 99.
It increases with the update of the insulation resistance value.
<CR><LF>
String end
