Operating states of the
PLC
57
04/99 AWB 27-1184 GB
Run
“Run” status means that the user program is running
cyclically.
The PLC is switched to the “Run” status:
If the “Reset” button is pressed when the
operating mode selector switch is set to “Run” or
“Run M-Reset”;
After the power supply is switched on if the
operating mode selector switch is set to “Run” or
“Run M-Reset”;
By means of the programming software on the
PC.
Not Ready
The user program does not run in “Not Ready”
status.
The PLC is switched to the “Not Ready” status:
If there is no program loaded in the PLC;
As a result of a hardware error;
As a result of a serious error in the user program
(e.g. cycle time violation)
Once the error has been rectified, you can cancel the
“Not Ready” status as follows:
By pressing the “Reset” button; if the operating
mode selector switch is set to “Run M-Reset”, the
PLC will be switched to the “Run” status;
By switching the power supply off and then on
again; if the operating mode selector switch is set
to “Run M-Reset” the PLC will be switched to the
“Run” status;
By means of the programming software on the
PC.
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