Olimex RS485/RS422 converter module with UEXT MOD-RS485 MOD-RS485 用户手册
产品代码
MOD-RS485
EXTERNAL CONNECTORS DESCRIPTION:
UEXT:
Pin #
Signal Name
1
VCC
2
GND
3
TXD
4
RXD
5
SCL
6
SDA
7
Not connected
8
Not connected
9
SCK
10
#SS
RS485:
Pin #
Signal Name
1
VCC
2
100 Ohm pull-
down resistor
3
A
4
B
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