Alarm Assignment Of The Relays - Bender ISOMETER isoRW425 Manual

Modbus register assignment of the ISOMETER®

7.1.3 Alarm assignment of the relays

Several alarms can be assigned to each relay. For the assignment of each relay, a 16-bit-register is
used with the bits described below. The following table applies to relay 1 and relay 2, in which „x"
stands for the relay number. A set bit activates the specified function.
Bit Display indication
0 Reserved
1
rx
2
+R1 < Ω
rx
3
-R1 < Ω
rx
4
+R2 < Ω
rx
5
-R2 < Ω
rx
6
Z1 < Ω
rx
7
Z2 < Ω
rx
8
U < V
rx
9
U > V
rx
10
test
rx
11
S.AL
12 Reserved
13 Reserved
14 Reserved
15 Reserved
38 isoRW425_D00052_05_M_XXEN / 04.2021
When reading, always 0
When writing, any value
Device error E.xx
x Err
Pre-alarm R1
Fault R at L1/+
F
Pre-alarm R1
Fault R at L2/-
F
Alarm R2
Fault R at L1/+
F
Alarm R2
Fault R at L2/-
F
Pre-alarm Z1
Alarm Z2
Alarm message U
Undervoltage
Alarm message U
Overvoltage
Manually started self test
Device start with alarm
When reading, always 0
When writing, any value
When reading, always 0
When writing, any value
When reading, always 0
When writing, any value
When reading, always 0
When writing, any value
Meaning
n
n