WEG PLC300 User Manual - page 55
Description of the PLC300 Operation
PLC300 | 9-7
NOTE!
A maximum of 4 bargraphs can be placed on each screen.
9.1.9 Text Output
Shows text (string) on the ‘Ouput’ function of the screens of the PLC300 with HMI. This
option only accepts STRING.
The string is terminated with the NULL (0) character and is shown in one line of the display,
being then limited to 20 characters. The excess will be truncated.
9.1.10 Text Input
The Text Input component, from firmware version 2.10 up, allows the input of STRING
variables, and they can contain letters, numbers, signals, etc.
In order to insert letters, just use the
the shift function will remain selected, enabling the entering of several letters. The arrows
and toggle from high to low case.
9.2 AUTOMATIC SOFTWARE RECOVERY - ASR
When energizing the PLC300, if it is detected that the Resource, CANopen Configuration
or Setup are invalid (battery fault, for instance), the corresponding files contained in the
flash memory will be loaded. Those files will be automatically created at the moment of
the download of the Resource and CANopen Configuration or in case there is a change
in the Setup by the HMI or WPS.
At the power-up, a backup of the retentive markers and recipe will be made so that, if
there is data loss in the memory, the configuration of the last power on will be recovered.
If the recovery of the software occurs, an alarm will be generated indicating that the
Resource was invalid, and it was recovered from the Flash memory; the system marker
that indicates the alarm can be used for some treatment in the Resource.
Important: When the software recovery occurs, the retentive variables and recipes will
be restored to the state of the last valid power on.