UART Box Header (CN16 on PCB) Pin assignment:
If you are using an RS232 cable in RS485 connection, please make sure the pin2 and
pin 3 are cross connected. See the sample cable wiring diagram below:
UART4 connection diagram:
ZT485E: RS485 transceiver. RS485 works in half duplex mode.
ARM11
CPU
2x4
Box Header
ZT485E
EC14xx
(UART4
RS485)
1
2
3
5
7
4
6
8
4
6
: 485+
: 485-
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