Contents
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PAC8000* IO PROFINET Scanner
User’s Manual–September 2017
GFK-2839B
2.10.1
Special LED Blink Patterns
Multiple LEDs can blink in patterns that indicate special conditions:
LEDs Involved
Pattern Displayed
Description
CONNECT, FAULT,
LAN, PORT 1,
PORT 2
CONNECT, FAULT, LAN, PORT 1, PORT
2 LED's go ON in order, from bottom to
top. After the CONNECT LED has been
ON for approximately 45 ms, the LEDs go
OFF from top to bottom, until all of the
LEDs are OFF. After all of the LEDs have
been OFF for approximately 45 ms, the
pattern is repeated.
Module identification requested
(Initiated by PME or any DCP
client and is used to locate
and/or identify a PNS)
CONNECT, FAULT,
LAN, PORT 1,
PORT 2
These LEDs blink slowly (ON for 0.5
seconds, OFF for 0.5 seconds) in unison.
Firmware update mode
(Application/FPGA)
MASTER,
CONNECT, FAULT,
LAN, PORT 1,
PORT 2
These LEDs blink slowly (ON for 0.5
seconds, OFF for 0.5 seconds) in unison.
Firmware update mode (Boot
loader)
OK, CONNECT,
FAULT, LAN,
PORT 1, PORT 2
The CONNECT, FAULT, LAN, PORT 1
and PORT 2 LEDs flash once. The OK
LED blinks an (2-digit hexadecimal) error
code. The pattern is repeated until the
module is reset or power-cycled.
Fatal error detected
Fatal Error Blink Pattern
If the PNS detects a fatal error, it attempts to write diagnostic data to nonvolatile storage. The
OK LED blinks rapidly if the module has been configured to blink fatal error codes. It starts
blinking the error code after writing the diagnostic data to nonvolatile storage. The
CONNECT, FAULT, LAN, Port 1 and Port 2 LEDs flash once to indicate the start of the error
code. After a pause, the OK LED blinks a 2-digit hexadecimal error code. The OK LED first
blinks to indicate the most significant error digit, then after a one-second pause blinks again
to indicate the least significant error digit. Repetitions continue until the module is reset or
power-cycled.
Module Identification LED Pattern
The Module Identification LED blink pattern described above can be used to locate and/or
identify a PNS, for example, when assigning its Device Name. PROFICY Machine Edition or
any DCP client can be used to command the module to begin or end the blink pattern.
Firmware Update Mode Blink Patterns
Blink patterns described in the table above indicate that a firmware update of the PNS is
underway. Because the update is being done through the USB port, the USB LED also blinks
to indicate activity on the USB port.
