Hardware reference guide

CPU Modules
174
35013379 11/2011
The following table shows the LED descriptions.
LED Error Codes
The following table shows the run LED error codes for the 140CPU53414 module.
LED Descriptions
LEDS Color Indication when On
Ready Green The CPU has passed power-up diagnostics.
Run Green The CPU has been started and is solving logic.
Bat Low Red The battery needs replacing or is not present.
Modbus Green Communications are active on Modbus port 1 or 2.
Modbus + Green Communications are active on the Modbus Plus port.
Error A Red Indicates communications error on the Modbus Plus port.
Mem Prt Amber Memory is write-protected (the memory protect switch is on).
LED Error Codes
Number of Blinks Code Error
Continuous 0000 requested kernel mode
2 80B ram error during sizing
80C run output active failed
82E MB command handler stack error
3 769 bus grant received
72A not master asic on cpu
72B master config write bad
72C quantum bus DPM write failure
72F plc asic loopback test
730 plc asic BAD_DATA