User manual

Hardware description |
Seite 17
2.1.1.5. Controll LEDs
The Ethernet module has a series of control LEDs. They are used for easy visual
indication of various state functions.
While switching the module on, in normal operating mode, the module should
signalize the following sequence:
approx. 20 sec after switching the module on, LED 1 and 2 are flashing briefly.
-> Operating system has been loaded successfully.
Then LED 3 is on permanently and LED 1 is flashing. -> Module is ready.
2.1.1.5.1. Definition of LEDs
LED
Label
Description
above
3,3V
Internal 3,3V power supply
above
5V
Internal 5V power supply
1
CPU Activity
2x flashing + long break. Operating system reports:
Status OK
2
Interface
Activity
Active communication over Ethernet
3
Status
LED is on -> Module is ready
4
ERROR
Error during ethernet-transfer (for details see document
”Serial protocol”)
5
Inputs:
Change
"State change" between 2 read-out cycles detected
6
Outputs: Auto-
Off
Due to timeout, all outputs are switched-off for safety
reasons
7
I/O Access
CPU-access to the connected I/O modules.