INSYS GSM 4.2 easy, Дополнительное руководство

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3.4 New History-Entries
The description of the history functionality of the INSYS GSM 4.2 easy can be found in the
supplied manual of the INSYS GSM 4.2. Due to the extended functionality of the INSYS
GSM 4.2 easy, there are several additional entries in the history memory:
Cause Detail Meaning
PLC ERROR
When communicating with the easy device, there
was no response after 3 attempts.
PLC PERIODIC
The process “Periodic SMS” starts.
PLC PARM
An object instance was set.
SYSTEM
PLC CHANGE
A monitored object instance has changed its
value.