1 status and fault leds – Siemens Simatic S7-400 User Manual
Page 434
CPUs for M7-400
11-6
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
11.3.1
Status and Fault LEDs
Status and Fault LEDs
The CPU 486-3 and CPU 488-3 have the following status and fault LEDs:
INTF
EXTF
SD
HD
USR1
USR2
RUN
STOP
Figure 11-2
Status and Fault LEDs on the CPU 486-3 and CPU 488-3
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