ACC-72EX User Manual
Diagnostics
106
DIAGNOSTICS
LEDs
There is one system LED (SYS LED) per ACC-72EX. SYS LED is always present as described below.
There are up to 4 LEDs per communication and application channel. These LEDs, like the
communication channel LED (COM LED), are network-specific and are described separately.
SYS LED
The system status LED (SYS LED) is always available. It indicates the state of the system and its
protocol stacks. The following blink patterns are defined:
Color
State
Meaning
Yellow
Flashing Cyclically at 1 Hz
netX is in Boot Loader Mode and is Waiting for Firmware
Download
Solid
netX is in Boot Loader Mode, but an Error Occurred
Green
Solid
netX Operating System is Running and a Firmware is Started
Vellow /
Green
Flashing Alternating
2nd Stage Bootloader is active
Off
N/A
netX has no Power Supply or Hardware Defect Detected
PROFIBUS-DP
– Master – OPT10
The following table describes the meaning of the LEDs for the comX PROFIBUS-DP Master
communication modules (COMX 100CA-DP/ COMX100CN-DP) when the firmware of the PROFIBUS
DP Master protocol is loaded to the comX communication module:
COM LED (COM0)
Color
State
Meaning
Green
Flashing acyclic
No configuration or stack error
Green
Flashing cyclic
Profibus is configured, but bus communication is not yet released from the
application
Green
On
Communication to all Slaves is established
Red
Flashing cyclic
Communication to at least one Slave is disconnected
Red
On
Communication to one/all Slaves is disconnected
PROFIBUS-DP
– Slave – OPT11
The subsequent table describes the meaning of the LEDs for the comX PROFIBUS-DP Slave
communication modules (COMX CA-DP/ COMX CNDP) when the firmware of the PROFIBUS DP
Slave protocol is loaded to the comX communication module.
COM LED (COM0)
Color
State
Meaning
Green
On
RUN, cyclic communication
Red
Flashing cyclic
STOP, no communication, connection error
Red
Flashing acyclic
not configured