Modbus register assignment of the ISOMETER®
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isoPV425_D00028_09_M_XXEN/05.2018
3005 RW
Pre-alarm value
resistance meas-
urement "R1"
UINT 16 kΩ R2 … 500
3006 RW Reserved --- --- ---
3007 RW
Alarm value resist-
ance measure-
ment "R2"
UINT 16 kΩ 1 … R1
3008 RW
Activation alarm
value undervolt-
age "U<"
UINT 16 ---
0 = Inactive
1 = Active
3009 RW
Alarm value und-
ervoltage UINT 16 V 30 … U>
3010 RW
Activation alarm
value overvoltage
"U>"
UINT 16 ---
0 = Inactive
1 = Active
3011 RW
Alarm value
Overvoltage
"U >"
UINT 16 V U< … 1150k
3012 RW
Memory function
for alarm mes-
sages
(Fault memory)
"M"
UINT 16 ---
0 = Inactive
1 = Active
3013 RW
Operating mode
of relay 1 "r1"
UINT 16 ---
0 = n.o.
1 = n.c.
3014 RW
Operating mode
of relay 2 "r2"
UINT 16 ---
0 = n.o.
1 = n.c.
3015 RW Bus address "Adr" UINT 16 --- 0 / 3 … 90
Register
Property Description Format
Unit
Value range