Ebm-Byts Db-A Jumpers & Connectors Settings; Com 3/4 Pin 9 Signal Select (Ojri3/4); Serial Port 1/ 2 - Rs485 Mode Select (Ojp485) - BCM EMS-TGL Quick Reference Manual

2.10 EBM-BYTS DB-A Jumpers & Connectors settings
2.10.1

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

OJRI4
OJRI3
* Default
Serial port 1/ 2 – RS485 mode select (OJP485)
2.10.2
Ring*
In Serial Port 1 mode
PIN
Auto Direction
1-2
485TXP external
3-4
biasing resistor
485TXN external
5-6
biasing resistor
In Serial Port 2 mode
Auto Direction
7-8
485TXP external
9-10
biasing resistor
485TXN external
11-12
biasing resistor
EMS-TGL Series Quick Reference Guide 49
Quick Reference Guide
+5V
+12V
ON NC
RTS# Control*
OPEN*
OPEN*
ON NC
RTS# Control*
OPEN*
OPEN*