Olimex RS485/RS422 converter module with UEXT MOD-RS485 MOD-RS485 ユーザーズマニュアル
製品コード
MOD-RS485
BOARD LAYOUT:
POWER SUPPLY CIRCUIT:
MOD-RS485
is power supplied via UEXT connector pin 1 (3.3V) and pin 2 (GND).
JUMPER DESCRIPTION:
ENABLE_RT
This jumper, when closed, enables 120 Ohm termination on the RS485 bus.
Default state is closed.
Default state is closed.
SCL/SCK
This jumper, when is in position SCL – connects UEXT pin 5 (SCL) to ADM3483ARZ
pin 3 (DE) and when is in position SCK – connects UEXT pin 9 (SCK) to
pin 3 (DE) and when is in position SCK – connects UEXT pin 9 (SCK) to
ADM3483ARZ pin 3 (DE).
Default state is in position SCK.
Default state is in position SCK.
#SS/SDA
This jumper, when is in position #SS – connects UEXT pin 10 (#SS) to ADM3483ARZ
pin 2 (/RE) and when is in position SDA – connects UEXT pin 6 (SDA) to
pin 2 (/RE) and when is in position SDA – connects UEXT pin 6 (SDA) to
ADM3483ARZ pin 2 (/RE).
Default state is in position #SS.
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