Connecting The R1 & R2 Ports; Wiring; Supported Rs-485 Baud Rates By Protocol; Figure 5: R1 & R2 Connection Ports - MSA fieldserver QuickServer FS-QS-2 0 Series Startup Manual

3.2 Connecting the R1 & R2 Ports
For the R1 Port only: Switch between RS-485 and RS-232 by moving the number 4 DIP Switch left for
RS-485 and right for RS-232
The R2 Port is RS-485.
Connect to the 3-pin connector(s) as shown below.
3.2.1

Wiring

BMS RS-485
NOTE: Use standard grounding principles for GND.
3.2.2

Supported RS-485 Baud Rates by Protocol

The supported baud rates for either port is based on the protocol of the connected devices.
The following baud rates are supported for Modbus RTU:
2400, 4800, 9600, 19200, 38400, 57600, 76800, 115200
The following baud rates are supported for BACnet MS/TP:
9600, 19200, 38400, 76800
5).
(Figure
Figure 5: R1 & R2 Connection Ports
RS-485
Gateway Pin
Wiring Assignment
RS-485 + TX +
RS-485 - RX -
GND GND
QuickServer Start-up Guide
+ - GND
RS-232
BMS RS-232 Gateway Pin
Wiring Assignment
RS-232 - TX +
RS-232 + RX -
GND GND
Installation
10