Ebm-byts db-a jumpers & connectors settings, Com 3/4 pin 9 signal select (ojri3/4), Serial port 1/ 2 – Avalue EMS-BYT User Manual
Page 42: Rs485 mode select (ojp485), 10 ebm-byts db-a jumpers & connectors settings
EMS-BYT Series
42 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
PIN
ON
NC
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
ON
NC
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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