Rs 485 Interface; Pin Assignments; External Power Supply - Moeller DE4-COM-2X Manuel

Engineering

RS 485 Interface

External power supply

GB-14

Pin assignments

The RS 485-Interface can also be accessed using the 4-pin
plug-in screw terminals.
71 72 88 89
Figure 4: Plug-in screw terminals for the RS 485 interface
Terminal Designation
71 T/R(B)
72 T/R(A)
88 S-C
89 S
Pin assignments
If you want to supply the interface with an external voltage,
this occurs via a 2-pole plug-in screw terminal.
+ –
Figure 5: Plug-in screw terminals for the external power supply
Terminal Designation
+ Vcc 24
– GND 24
03/01 AWB823-1279-D/GB/F
Input / output Comment
Input / output RS 485
Input / output RS 485
– Capacitive screen to PE
– Direct screen to PE
Input / Comment
output
Input External power supply
15 to 30 V DC
– 0 V potential for external
power supply