Shanghai ZLAN Information Technology Co., Ltd Tel: +86-17321037177 http://www.zlmcu.com
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can see the RS485 bus idle.
7. Cascade approach
ZLAN5443A support cascade, which enables ZLAN5443A to be easily extended to 8, 12
and 16 ports converters. It is more convenient to project rebuilding and upgrade.
When do cascade, connect the cascade Ethernet port(Uplink RJ45) of upper level
ZLAN5443A to the normal port(RJ45) of the lower level ZLAN5443A via the
manufacturer's cascade network line (actually a shorter parallel network line). The
cascade steps can be continuously carried out at a maximum of level 8.
By default, ZLAN5443A requires power supply per level. If you need to supply power
through a cascade line, you need to customize it.
Figure 7 ZLAN5443A Cascade Method
8. 485 character
ZLAN5103 meet the RS485 standard, each ZLAN5103 can be with 32 terminal 485
devices. The maximum communication distance is 1200 meter, the resistance of 485
terminal is 120 ohms, usually must use terminal resistance when wiring over 300m. Pay
attention to the wiring, 485+ and 485- must be a twisted-pair, in order to reduce signal
interference.
9. After-service and technical support
