Rs-485 Wiring Method - TECOM AG-300 Plus User Manual

RS-485 wiring method

2.
(1) AG-300 Plus
B/Z1 A/Y1 GND 12V B/Z2 A/Y2
1'st RS485
(2) TT-300
A. Connect TT-300 to AG-300 Plus by using CAT5e (or CAT6) cable.
B. Total two twisted pairs of CAT5e cable are used; one twisted pair for RS485 signal,
and the other twist pair would be used for power and ground.
AG-300 Plus Gateway User Manual
GND and 12V are common used by both RS485s
2'nd RS485
(RS485-)
(RS485+)
Twisted
Page
Pair
Twisted Pair
7