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EMS-BYT Series

40 EMS-BYT Series Quick Reference Guide

2.10 EBM-BYTS DB-A Jumpers & Connectors settings

2.10.1 COM 3/4 pin 9 signal select (OJRI3/4)

* Default

Ring*

+5V

+12V

2.10.2 Serial port 1/ 2 – RS485 mode select (OJP485)

In Serial Port 1 mode

1-2

Auto Direction

RTS# Control*

3-4

485TXP external

biasing resistor

OPEN*

5-6

485TXN external

biasing resistor

OPEN*

In Serial Port 2 mode

7-8

Auto Direction

RTS# Control*

9-10

485TXP external

biasing resistor

OPEN*

11-12

485TXN external

biasing resistor

OPEN*

OJRI4

OJRI3

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