Table 3- 1 Led Displays On The Cpus - Siemens SIMATIC PCS 7 System Manual

Structure of the CPU 410-5H
3.1 Operator controls and display elements on the CPU 410-5H
Sections Monitoring functions of the CPU 410-5H (Page 37) and Status and error displays
(Page 39) describe the states and errors/faults indicated by these LEDs.
Table 3- 1
LED
Top bar
INTF
EXTF
REDF
BUS1F
BUS5F
BUS8F
IFM1F
IFM2F
MAINT
RUN
STOP
Bottom bar
MSTR
RACK0
RACK1
For the interfaces
LINK
RX/TX
LINK 1 OK
LINK 2 OK
Reset button
You operate the reset button in the following cases:
● You want to reset the CPU to the factory state, see section Resetting the CPU410-5H to
factory settings (Page 132)
● You want to reset the CPU during operation, see section Reset during operation
(Page 133)
The reset button is on the front of the CPU directly below the LED strip. Use an appropriately
narrow object to press the reset button.
34
LED displays on the CPUs
Color Meaning
red Internal error
red External error
red Loss of redundancy/Redundancy fault
red Bus fault at the PROFIBUS interface
red Bus fault at the first PROFINET IO interface
red Bus fault at the second PROFINET IO interface
red Error in synchronization module 1
red Error in synchronization module 2
yellow Maintenance request pending
green RUN mode
yellow STOP mode
yellow CPU controls the process
yellow CPU in rack 0
yellow CPU in rack 1
green Connection at the PROFINET IO interface is active
orange Receiving or sending data at the PROFINET IO interface.
green Connection via synchronization module 1 is active and OK
green Connection via synchronization module 2 is active and OK
CPU 410-5H Process Automation/CPU 410 SMART
System Manual, 09/2014, A5E32631667-AB