VXC-114U/144U/144iU User’s Manual (Ver. 1.2, Mar.11, 2009) -----14
2.3 Pin Assignment
2.3.1 VXC-112U Pin Assignment
RS-232 Cable Wiring (Null Modem)
2.3.2. VXC-142U/VXC-142iU Pin Assignment
The RS-485 bus is a differential (balanced)
signal, thus
you cannot wire the Data+ with Data-
directly for a single port loop-back test.
It will not
work at all!
Warning: