Siemens CPU 1518-4 PN/DP ODK - 4 Interrupts, Error Messages, Diagnostics and System Alarms; Status and Error Display of the CPU

CPU 1518-4 PN/DP ODK (6ES7518-4AP00-3AB0)
Manual, 09/2016, A5E35681108-AA
33
Interrupts, error messages, diagnostics and system
alarms
4
The status and error displays of the CPU 1518-4 PN/DP ODK are described below.
You will find additional information on "Interrupts" in the STEP 7 online help.
You can find additional information on the topics of "Diagnostics" and "System alarms" in the
Diagnostics (http://support.automation.siemens.com/WW/view/en/59192926
) function
manual.
4.1
Status and error display of the CPU
LED display
The figure below shows the CPU 1518-4 PN/DP ODK LEDs.
①
RUN/STOP LED (yellow/green LED)
②
ERROR LED (red LED)
③
MAINT LED (yellow LED)
④
No function
⑤
LINK RX/TX LED for port X1 P1 (yellow/green LED)
⑥
LINK RX/TX LED for port X1 P2 (yellow/green LED)
⑦
LINK RX/TX LED for port X3 P1 (yellow/green LED)
⑧
LINK RX/TX LED for port X2 P1 (yellow/green LED)
Figure 4-1 LED display of the CPU 1518-4 PN/DP ODK (without front panel)