750-841 WAGO, 750-841 Datasheet - Page 118

• Manufacturer Part Number: 750-841
• Description: CONTR.ETHERNET TCP/IP 10/100MBIT
• Manufacturer: WAGO

Specifications of 750-841

• Rohs Compliant: YES
• No. Of Digital Inputs: 10
• No. Of Digital Outputs: 10

110 •
3.1.11.2
Fieldbus Controller
Fieldbus Controller 750-841
Node Status – Blink code from the 'I/O' LED
The ‘I/O‘-LED displays the communication status of the internal bus.
Additionally, this LED is used to display fault codes (blink codes) in the event
of a system error.
The controller starts up after switching on the supply voltage. The "I/O" LED
blinks. The "I/O" LED has a steady light following a fault free run-up.
In the case of a fault the "I/O" LED continues blinking. The fault is cyclically
displayed by the blink code.
Detailed fault messages are displayed with the aid of a blink code. A fault is
cyclically displayed with up to 3 blink sequences.
LED
I/O
Green
Off
Red
Red
• The first blink sequence (approx. 10 Hz) starts the fault display.
• The second blink sequence (approx. 1 Hz) following a pause. The
• The third blink sequence (approx. 1 Hz) follows after a further pause.
number of blink pulses indicates the fault code.
The number of blink pulses indicates the fault argument.
Meaning
Fieldbus controller operating perfectly, Data cycle on
the internal bus
No data cycle on the internal bus
a) During startup of fieldbus controller:
b) After startup of fieldbus controller:
Startup displayed by LED flashing fast for approx.
Errors, which occur, are indicated by three conse-
cutive flashing sequences. There is a short pause
between each sequential flash.
Internal bus being initialized,
1-2 seconds
Trouble shooting
Evaluate the fault message (fault code and
fault argument).
WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP