Display Elements; Schematic Diagram - WAGO I/O-SYSTEM 750 Manual

2.1.1.4

Display Elements

Fig. 2.1.1-2: Display
Elements
2.1.1.5

Schematic Diagram

Shield
(screen)
Fig. 2.1.1-3: Serial Interface 750-653
WAGO-I/O-SYSTEM 750
I/O Modules
LED
A
green
B
green
g065002x D
green
1)
The pulses are so short that the off status cannot or only hardly be
recognized with the eyes.
___
1 5
TxD TxD
___
2 6
RxD RxD
3 7
0V
4 8
750-653
750-653 (/xxx-xxx) [Serial Interface RS 485]
Channel State Function
Function off
No operational readiness or the
internal data bus communication is
interrupted
on
Operational readiness and trouble-
free internal data bus
communication
1)
TxD off Signal transmission TxD running
on No signal transmission TxD
1)
RxD off Signal transmission RxD running
on No signal transmission RxD
RxD
___
RxD
TxD
___
TxD
0V
Shield
(screen)
Display Elements
RS 485
Logic
Function
RxD
TxD
• 9
g065301e