Configuration of the CPU 410
3.1 Operator controls and indicators on the CPU 410
CPU 410 Process Automation/CPU 410 SMART
36
System Manual, 05/2017, A5E31622160-AC
LED displays
The following table gives an overview of the available LED displays.
Sections CPU 410 monitoring functions (Page 39) and Status and error displays
(Page 41) describe the states and errors/faults indicated by these LEDs.
Table 3- 1
LED displays on the CPUs
LED display
Color
Meaning
Top bar
INTF
red
Internal error
EXTF
red
External error
REDF
red
Loss of redundancy/Redundancy fault
BUS1F
red
Bus fault at the PROFIBUS interface
BUS5F
red
Bus fault at the first PROFINET IO interface
BUS8F
red
Bus fault at the second PROFINET IO interface
IFM1F
red
Error in synchronization module 1
IFM2F
red
Error in synchronization module 2
MAINT
yellow Maintenance request pending
RUN
green RUN mode
STOP
yellow STOP mode
Bottom bar
MSTR
yellow CPU controls the process
RACK0
yellow CPU in rack 0
RACK1
yellow CPU in rack 1
For the interfaces
LINK
green Connection at the PROFINET IO interface is active
RX/TX
orange Receiving or sending data at the PROFINET IO interface.
LINK 1 OK
green Connection via synchronization module 1 is active and OK
LINK 2 OK
green Connection via synchronization module 2 is active and 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 CPU 410 to
delivery condition (reset to factory setting) (Page 142)
●
You want to reset the CPU during operation, see section Reset during operation
(Page 143)
The reset button is on the front of the CPU directly below the LED strip. Press it with a
suitably thin round object.
Slot for synchronization modules
The synchronization modules for redundant operation are inserted in these slots. See
section Synchronization modules (Page 239).