Technical data

105
W&T
Subject to errors and modifications
Trigger: Define here the triggers for the alarm. Multiple
selections are possible.
Min./Max.: Specifies the lower and upper limit. The range within
these limits is considered to be „valid“.
Hysteresis: You can also specify a hysteresis value used to
reset the alarm status.
Example:
min. 2V / max. 8V / Hysteresis 1V
When a limit is violated the alarm status is reset when 7V (8-1)
or 3V (2+1) is reached.
This function prevents the limit value from ‚flickering‘.
Delay Time: Triggering of the alarm is delayed by this time (in
minutes) to compensate for momentary limit violations.
Interval: Enter here the send interval (in minutes) at which a
message should be sent when there is an active alarm. If you
want to send only a single message, enter here „E“.
Timer: Here you configure when the alarm monitor should be
turned on and off. The interval set here is based on the CRON
service as used in Linux/Unix systems.
3.16.1 CRON service
Valid characters are:
* : Stands for all valid values in the respective entry field (e.g.
all minutes or all hours)
- : Indicates a range of from..to. For example weekday „2-4“
stands for Tuesday to Thursday, whereas an entry of „*“ triggers
the timer on all weekdays.