Display Elements; Figure 5: Display Elements; Table 8: Legend For Figure "Display Elements - WAGO 750-652 Manual

WAGO-I/O-SYSTEM 750
750-652 Serial Interface RS-232 / RS-485
3.3

Display Elements

Figure 5: Display Elements

Table 8: Legend for Figure "Display Elements"

LED
A
B
C
D
E
F Data flow control
Data exchange
G
Manual
Version 1.4.0
Designation Status
Green
Function
Red
OFF
Green
TxD
(transmit)
Yellow
OFF
Green
RxD
(receive)
Red
OFF
Green
Transmission
status
Yellow
Green
Mode Yellow
Red
OFF
Green
Yellow
Red
OFF
Yellow
Green
5)
mode
Yellow
flashing
Function
Ready for operation and undisturbed internal bus
communication
Not ready for operation or no or disturbed internal bus
communication
No signal transmission TxD
Signal transmission TxD present
I/O module has received XOFF character, the
2)
transmission is inactive
CTS line has fallen, the transmission is inactive
No signal transmission RxD or input open
Signal transmission RxD present
Signal transmission RxD present
received are defective. (parity, data frame or overrun
3)
error has occurred)
No transmission error
Output buffer is full
Input buffer is full (LED lights up if there are more than
2304 characters in the input buffer. LED does not light
up if there are fewer than 2176 characters in the input
buffer)
RS-485 half-duplex, DMX
RS-422 full-duplex, data exchange
RS-232
No data flow control
RTS/CTS data flow control active
XON/XOFF data flow control active
RTS with lead time and follow-on time is active
Data exchange mode is OFF
Data exchange mode is initialized
Data exchange mode is ON
Data exchange mode is ON, but there is no
communication (timeout)
Device Description
1)
4)
1)
1)
, but some characters
4)
2)
5)
5)
23