WAGO-I/O-SYSTEM 750 XTR
Device Description 39
750-8212/040-010 PFC200 G2 2ETH M12 RS XTR
Manual
Version 1.0.0, valid from FW version 03.01.07(13)
3.3.6.1 Operating as an RS-232 Interface
Kommunikationsanschluss
Depending on the device type DTE (Data Terminal Equipment, e.g., PC) or DCE
(Data Communication Equipment, e.g., PFC, modem), the RS-232 signals have
different data directions.
Table 9: Function of RS-232 Signals for DTE/DCE
Contact
Signal
Data Direction
DTE
DCE
2
RxD
Input
Output
3
TxD
Output
Input
5
FB_GND
---
---
7
RTS
Output
Input
8
CTS
Input
Output
For a DTE-to-DCE connection, the signals are connected directly (1:1).
Figure 9: Termination with DTE-DCE Connection (1:1)
For a DCE-to-DCE connection, the signal connections are crossed (cross-over).
Figure 10: Termination with DCE-DCE Connection (Cross-Over)
