GFK-1911B
Chapter 6 Diagnostics
6-13
6
The example below shows error states. Either errors have been detected on
module 5 or module 4 has broken down. The illustration below shows the behavior
of the diagnostic indicators on the adjacent modules.
1 2
3 4
5
6
A No error
B I/O error
C Backplane error
LED on or flashing at 0.5Hz / 2Hz / 4Hz (On /
slow / medium / fast)
I/O Error
Error:
Short circuit on module 4 (IC220MDL75
1
)
Effect:
Control system:
Error message to the control system (I/O error)
NIU:
FS and FN flash
Module 4:
Green D LED flashes at 2Hz
Other modules:
Remain unchanged
Backplane Error
Error:
Incoming bus after module 2 and before module 4 has
been interrupted
Effect:
Control system:
Error can be located by the control system
NIU:
FS and FN flash
Module 4:
Green D LED flashes at 4Hz (bus error)
Other modules:
Green D LEDs on all other modules flash at 0.5Hz
Summary of Contents for VersaPoint IC220PBI002
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