WAGO-I/O-SYSTEM 750 XTR
Device Description 25
750-652/040-000 Serial Interface RS-232/RS-485 XTR
Manual
Version 1.3.0
3.6.3
Communication
Table 9: Technical Data – Communication
Transmission
channels
1 TxD/1 RxD, full-duplex, half-duplex,
7 or 8 bit data,
1 or 2 stop bits
Mode
(configurable)
• RS-232
• RS-485 half-duplex
*)
• RS-422 full-duplex
• Data exchange RS-422
• DMX half-duplex/250k
1)
Data flow control
RTS/CTS
2)
depending on mode, XON/XOFF
3)
Baud rate
300 ... 115200 baud
Data width, internal 8, 24
*)
or 48 bytes (configurable)
Line length
RS-485/RS-422:
max. approx. 1000 m
4)
RS-232:
max. 40 m
Data exchange mode/
DMX:
max. 100 m
5)
Buffer
2560 bytes for receive / 512 bytes for send
6)
*)
Default setting
1)
Firmware version 06 or higher: Receiving DMX packets possible
2)
Activation of flow control RTS/CTS is only possible for “RS-232” mode;
3)
Flow control RTS/CTS with lead/follow-on time possible with firmware version 03 or higher.
4)
Activation of flow control XON/XOFF is only possible for “RS-232” and “RS-422 full-duplex”
modes.
5)
Depending on baud rate, bus system and cable type (use of a twisted-pair cable is
recommended)
6)
A twisted-pair cable must be used in “DMX” mode.
3.6.4
Interface
Table 10: Technical Data – Interface
Number of interfaces
1
Input resistance of the receiver
RS-485/RS-422
24 kΩ (1/2 Unit Load)
Defined receiver state with short-
circuited or isolated inputs (true fail-
safe)
