Contemporary Controls BASrouterSX Installation Manual

BASrouterSX
BACnet® Multi-Network Router
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.
• 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
• Whitelist
• Backward Routing
Installation
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.
Connecting chassis to earth or using
a backup source is always optional.
24 VDC 24 VAC
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.
Either Source
24 VAC or
24VDC
24 VAC
Installation Guide
Electrical (Class 2 Circuits Only)
INPUT DC
Voltage (±10%): 24 V
Power: 3 W
Frequency: N/A
Environmental
Operating temperature: 0°C to 60°C
Storage temperature: –40°C to +85°C
Relative humidity: 10–95%, non-condensing
Functional Ethernet
Physical Layer: 10BASE-T
100BASE-TX
Cable length limit: 100 m
MS/TP data rate (Kbps): 9.6, 19.2, 38.4, 57.6, 76.8, 115.2 Kbps
MS/TP node limit: 254 devices total,
31 full-load devices per segment
MS/TP Physical Layer Bias and Termination
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.
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.
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.
BASRTSX-B
BASRTSX-B-GSA
AC
24 V
6 VA
47-63 Hz
MS/TP
EIA-485
1200 m (1000 m if using 115.2 Kbps)