SBC-D23
SBC-D23 User Manual - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: S.B. - Reviewed by P.Z. - Copyright © 2021 SECO S.p.A.
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3.3.15
RS-485 Connector
SBC-D23 board offers also dedicated RS-485 interface, which is programmed inside the on-board microcontroller, while the physical interface comes
through a ±15kV ESD protected RS-485 transceiver, type Analog Devices ADM3485E.
Always available, there is also a dedicated 3-pin connector, type 53398-0371, for the connection of
external speakers (earphones)
Mating connector: MOLEX 51021-0300 receptacle with MOLEX 50079-8000 female crimp
terminals.
Signals Description:
/ RS485_D-
-485 Mode, Differential Pair
and RS485_D- signals. It can be connected or disconnected from the line by using
JP3 jumper (Jumper inserted = termination connected).
When this port is available (Factory option), then USART Port #3 will not be available on connector J2. Please check also par. 3.3.16
RS-485 Connector CN48
Pin
Signal
1
2
GND
3
RS485_D -
