Data Exchange Mode; Figure 16: Point-To-Point Connection Between Two Nodes - WAGO 750 Series Manual

46 Connect Devices
7.2.5

Data Exchange Mode

Figure 16: Point-to-point connection between two nodes

In this mode, the contacts of the I/O modules to connect are connected to each
other crosswise.
In the Data Exchange operating mode (point-to-point connection), a twisted-pair
cable should be used at least for larger cable lengths. Two wire pairs and one
ground wire are required. The ends of the cable should be terminated with a
terminal resistor.
Generally, a passive resistance is used by connecting the signal lines via one
100 ... 120 Ω resistor apiece to the ends of the of the cable (A-B).
Pos : 80 /D okumentation allgemei n/Glieder ungs elemente/---Seitenwechs el--- @ 3\mod_1221108045078_0.doc x @ 21810 @ @ 1
WAGO-I/O-SYSTEM 750
750-652 Serial Interface RS-232 / RS-485
Manual
1.2.0