Plc Diagnostics; Led Display - Siemens SINUMERIK 840C Installation Instructions Manual

3 PLC Installation

3.5 PLC diagnostics

3.5
3.5.1
3-8
More user manuals on
PLC diagnostics
The following diagnostics displays exist:
Displayed by
1
2
3
detailed error
4
5

LED display

After switching on the mains voltage, the interface control runs a self-diagnostics
program. This program tests the most important hardware components and initiali-
zes the software required for continuing system start up.
If errors in the system are recognized, the LED on the front plate displays the
error.
For a detailed error list, please refer to the "SINUMERIK 840C, Diagnostics
Guide".
ManualsBase.com
Brief description
LED CPU hardware fault
– System initialization program
USTACK Displays programming errors
coding
PLC status Displays and changes (password) to PLC data
(I, O, F, D, T, C)
Timeout Timeout analysis of write access
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SINUMERIK 840C (IA)