CONTEMPORARY CONTROLS BASRTSX-B Multi Network Router Installation Guide

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BASrouterSX  

Installation Guide  

BASRTSX-B  

BASRTSX-B-GSA  

BACnet® Multi-Network Router  

Electrical (Class 2 Circuits Only)  

The BASrouterSX is a high-performance BACnet router providing stand-alone routing  

between BACnet networks such as BACnet/IP, BACnet Ethernet, and BACnet MS/TP.  

Besides its high-speed processor, it has advanced features such as MS/TP slave  

proxy support (allowing auto-discovery of MS/TP slaves) and diagnostic MS/TP  

frame capture and storage for use with Wireshark®. Up to 50 BBMD and 147 FDR  

entries can be made. The BASrouterSX has two physical communication ports — a  

10/100 Mbps BACnet/IP Ethernet port and an optically isolated EIA-485 port for  

MS/TP. Router configuration is accomplished using resident web pages over SSL.  

INPUT  

Voltage (±10%):  

Power:  

DC  

AC  

24 V  

3 W  

N/A  

24 V  

6 VA  

47-63 Hz  

Frequency:  

Environmental  

Operating temperature: –40°C to +75°C  

Storage temperature:  

Relative humidity:  

–40°C to +85°C  

10–95%, non-condensing  

• Optically isolated MS/TP port  

• MS/TP baud rate range from 9.6–115.2 Kbps  

• MS/TP capture using Wireshark®  

• BACnet/IP Broadcast Management Device (BBMD)  

• Foreign Device Registration (FDR)  

• 50 BBMD entries, 147 FDR entries  

• MS/TP Backbone  

Functional  

Physical Layer:  

Ethernet  

MS/TP  

10BASE-T  

100BASE-TX  

EIA-485  

Cable length limit:  

100 m  

1200 m (1000 m if using 115.2 Kbps)  

MS/TP data rate (Kbps): 9.6, 19.2, 38.4, 57.6, 76.8, 115.2 Kbps  

• Allowlist  

• Backward Routing  

MS/TP node limit:  

254 devices total,  

31 full-load devices per segment  

Installation  

MS/TP Physical Layer Bias and Termination  

Power Connection  

The BASRTSX-B requires 24 VAC or 24 VDC while drawing no more than 6 VA of  

power. The recommended conductor size is 16–18 AWG. COM is directly connected  

to zero volts and the chassis is DC isolated from zero volts. Input connections are  

reverse-polarity protected. See figure below for power options.  

End-of-Line termination (120Ω) is normally applied at both ends of the MS/TP bus,  

especially when using long cable segments and faster data rates. Fail-safe voltage  

bias (200mV) ensures stable MS/TP operation. Depending on the application, these  

can be configured from the selectable DIP-switches independently for each EIA-485  

port. NOTE: The switches for bias and termination should both be either in on or off  

position.  

Connecting chassis to earth or using  

a backup source is always optional.  

Either Source  

24 VAC or  

24VDC  

End Device – In an application where the location of the device is at the end  

of the MS/TP bus segment – both bias and EOL termination must be applied.  

24 VDC  

24 VAC  

24 VAC  

Middle Device – In an application where the location of the device is anywhere  

between the end MS/TP devices (in the middle of the bus), the DIP switches should  

be in the OFF position. Other devices on the EIA-485 bus can be used to provide  

additional bias.  

WARNING: Internally, this device utilizes a half-wave rectifier and therefore can only share the same AC  

power source with other half-wave rectified devices. Sharing a common DC power source is also possible.  

Sharing AC power with full-wave rectified devices is NOT recommended. Devices powered from a  

common AC source could be damaged if a mix of half-wave and full-wave rectified devices exists.  

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General	Details
Name	CONTEMPORARY CONTROLS BASRTSX-B Multi Network Router Installation Guide
Make	CONTEMPORARY CONTROLS
Language	English
Filetype	PDF (Download)
File size	0.41 MB

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