Display Elements; Configuration Interface - WAGO 750 Series Manual

Attention!
Only for use in LAN, not for connection to telecommunication circuits!

3.1.2.4 Display elements

The operating condition of the fieldbus coupler or node is signaled via light
diodes (LED).
ETHERNET
Fig. 3.1-4: Display elements 750-342
LED
ON
LINK
TxD/RxD green
ERROR
IO
A
B or C

3.1.2.5 Configuration interface

The configuration interface used for the communication with WAGO-I/O-
CHECK or for firmware download is located behind the cover flap.
Configuration
interface
Fig. 3.1-5: Configuration interface
The communication cable (750-920) is connected to the 4 pole header.
Warning
The communication cable 750-920 must not be connected or disconnected
while the coupler/controller is powered on!
WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP
ON A
C
B
LINK
D
TxD/RxD
24V 0V
ERROR
I/O
+ +
Color Meaning
green Fieldbus initialization is correct
green Link to a physical network exists
Data exchange taking place
red Error on the fieldbus
red /green The 'I/O'-LED indicates the operation of the node and signals faults
/ orange encountered
green Status of the operating voltage – system
green Status of the operating voltage – power jumper contacts
(LED position is manufacturing dependent)
open
flap
ETHERNET
ON A
C
B
LINK
D
TxD/RxD
24V 0V
ERROR
I/O
+ +
Fieldbus coupler 750-342 • 43
Hardware
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