XVC-100
Text Display PLC
Device Description XVC-100
Operation
Subject to technical modifications
Doc No. 92 23 100000 (06/2002)
© by Moeller GmbH
34
6.3 PLC
OPERATING STATES
Power on
Power on status is indicated by a flashing Stop LED: In Power on status,
there is no user program in the PLC.
Stop
The Stop operating status has the following features:
•
A user program is stored on the PLC.
•
The user program is not running
The Stop status is selected:
•
After the power supply has been switched on when the operating
mode switch has been switched to Stop position.
•
Via the programming software in the PC
•
After a cycle time violation (this causes the PLC to restart in Stop
mode)
Run
In RUN status, the user program is processed cyclically.
The RUN operating status is selected:
•
After the power supply has been switched on when the operating
mode switch has been switched to Run position.
•
Via the programming software in the PC
System Fault SF
The SF LED indicates a system fault. The following system faults can occur
(
"
Section 9):
•
Hardware fault
•
System fault in firmware
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