iso415R-x_D00401_00_M_XXEN / 04.2021 11
ISOMETER® iso415R
2.3.9.4 Delay on release
t
off
When the fault memory is disabled, alarms are maintained until the measured value no longer vi-
olates the respective response value including hysteresis without interruption for the duration of
the delay on release t
off
(0....1800 s).
2.3.10 Factory settings FAC
The factory settings can be restored via the Modbus RTU interface. The required registers are de-
scribed in the Modbus table in chapter 5.2 on page 22. There are two options for restoring the
factory settings:
2.3.10.1 Factory settings excluding interface parameters
After restoring the factory settings, all previously changed settings are reset to the state upon de-
livery. The settings for the Modbus interface are not reset.
2.3.10.2 Factory settings including interface parameters
After restoring the factory settings, all previously changed settings including the settings for the
Modbus interface and the device address are reset to the state upon delivery.
2.3.11 Fault memory
The fault memory can be enabled or disabled via the interface register "Fault memory". Stored
alarms are reset by pressing the T/R button for > 1 s and < 3 s when the fault memory is enabled.
The fault memory is factory-set to disabled.
2.3.12 Start with alarm
This function, which can be enabled via the interface register "Start with alarm", makes the device
start with the measured value R
F
= 1 kΩ when it is restarted. The resulting alarm messages AL1
and AL2 are displayed until the measured value R
F
is above the respective limit values. The limit
value hysteresis and the fault memory for the respective alarm are not active during this start
phase.
