Deister Electronic GmbH UDL120 用户手册
4. Wiring
4.1 RS485
The pin assignment for the voltage supply and data transfer via RS485 is as follows:
pin assignment (M8):
PIN 1: VCC
(brown)
PIN 2: RS485 A
(white) -->(optional*)
PIN 3: GND
(blue)
PIN 4: RS485 B
(black) -->(optional*)
* In case of communication solely via Bluetooth™ PIN 2 and 4 do not have to be assigned.
V08/07/09
lo_udl120_io_en
9
UDL120
Figure 4.1.1: Pin assignment M8 connector (RS485)