Siemens SINUMERIK 828D Series - Control Unit CU320-2 PN and CU310-2 PN

4.9 Control Unit CU320-2 PN and CU310-2 PN
4.9.1 CU320-2 PN status displays
Module status displays
Three LEDs at the front of the CU320-2 PN provide information about the state of the module.
They indicate the states when powering up and in operation:
● If an error occurs, the power-up is terminated and the LEDs indicate the cause of the error.
● At the end of an error-free power-up, all LEDs are switched off briefly.
● After power-up, the LEDs are controlled via the loaded software.
Response of the LEDs when powering up – loading software
LED State Remark
RDY PN OPT
Red Orange Orange Reset Hardware reset
RDY LED lights up red, all other LEDs light
up orange
Red Red Off BIOS loaded –
Red flash‐
ing light 2
Hz
Red Off BIOS error
● An error occurred while loading the
BIOS
Red flash‐
ing light 2
Hz
Red
Flashing
light 2 Hz
Off File error
● Memory card not inserted or faulty
● Software on memory card not present
or corrupted
Red Orange
flashing
light
Off FW loading RDY LED lights up red, PN LED flashes
orange without fixed frequency
Red Off Off FW loaded –
Off Red Off FW checked
(no CRC error)
–
Red flash‐
ing light 0.5
Hz
Red flash‐
ing light 0.5
Hz
Off FW checked
(CRC error)
● CRC error
Response of the LEDs when powering up – firmware
LED State Remark
RDY PN OPT
Orange Off Off Initializing –
Alternating Running See the table below
Service cases - hardware
4.9 Control Unit CU320-2 PN and CU310-2 PN
Software and hardware
124 Service Manual, 08/2018, 6FC5397-5DP40-6BA1