Operating As An Rs-232 Interface; Figure 9: Termination With Dte-Dce Connection (1:1); Figure 10: Termination With Dte-Dte Connection (Cross-Over); Table 10: Function Of Rs-232 Signals For Dte/Dce - WAGO 750-8207 Manual

36 Device Description
3.3.6.1

Operating as an RS-232 Interface

Depending on the device type DTE (e.g., PC) or DCE (e.g., PFC, modem), the
RS-232 signals have different data directions.

Table 10: Function of RS-232 Signals for DTE/DCE

Contact
For a DTE-to-DCE connection, the signals are connected directly (1:1).

Figure 9: Termination with DTE-DCE Connection (1:1)

For a DTE-to-DTE connection, the signal connections are crossed.

Figure 10: Termination with DTE-DTE Connection (Cross-Over)

Manual
Draft version 1.2.1 from 2017-09-13, valid from FW Version 02.06.20(09)
Signal
2 RxD
3 TxD
5 FB_GND
7 RTS
8 CTS
WAGO-I/O-SYSTEM 750
750-8207 PFC200 CS 2ETH RS 3G
Data Direction
DTE
Input
Output
---
Output
Input
DCE
Output
Input
---
Input
Output