Led Display; Blink Code - WAGO -I/O-SYSTEM 750 User's Installation And Configuration

3.2.8

LED Display

The controller possesses several LED's for on site display of the controller op-
erating status or the complete node.
ETHERNET
Fig. 3-35: Display elements 750-842
A differentiation between two LED groups is made.
The first group = fieldbus contains the solid color LEDs having the designa-
tion ON (green), LINK (green), TxD/RxD (green) and ERROR (red) indicat-
ing the operating status of the communication via ETHERNET.
The second group = internal bus consists of the three-color I/O LED
(red/green/orange). This LED is used to display the status of the internal bus,
i. e. the status of the fieldbus node.
The three-color USR-LED can be accessed by a user program in the program-
mable fieldbus controller.
LEDs located on the right-hand side in the coupler power supply section show
the status of the supply voltage.
3.2.8.1

Blink code

A blink code displays detailed fault messages. A fault is cyclically displayed
using up to 3 different blink sequences.
• The first blink sequence (approx. 10 Hz) indicates the fault display.
• After a pause, a second blink sequence appears (approx. 1 Hz). The number
• The third blink sequence (approx. 1 Hz) appears following a further pause.
Modular I/O System
ETHERNET TCP/IP
01 02
ON
A
C
B
LINK
D
TxD/RxD
24V 0V
ERROR
I/O
+ +
USR
of blink impulses gives the fault code.
The number of blink pulses indicates the fault argument (where the
faulty module is physically located on the node).
status
voltage supply
-power jumper contacts
-system
Fieldbus controller 750-842 • 87
LED Display
g012902e