Bacnet Ms/Tp; To Set Up The Rtu Open For Bacnet Ms/Tp - Carrier RTU Open v5 Integration Manual

38.4 kbps
76.8 kbps (Default)

BACnet MS/TP

To set up the RTU Open for BACnet MS/TP

Refer to Appendix B (page 55) for the Protocol Implementation Conformance Statement, or download the latest
from BACnet International http://www.bacnetinternational.net/catalog/index.php?m=28.
NOTE This controller counts as a full load on the MS/TP bus.
Turn off the RTU Open's power.
1
NOTE Changes made to the switches when the controller is on will not take effect until the power is cycled!
Using the rotary switches MSB (SW1) and LSB (SW2), set a unique BACnet MS/TP MAC address for the RTU
2
Open. Set the MSB (SW1) switch to the tens digit of the address, and set the LSB (SW2) switch to the ones
digit. Valid addresses are 01-99.
NOTE The rotary switches also determine the BACnet device instance of the controller on the BACnet
network. The BACnet device instance is automatically generated based on the scheme 16101xx, where "16"
is the BACnet vendor ID for Carrier Corporation, and xx equals the rotary switch address.
EXAMPLE To set the controller's MS/TP MAC address to 01, point the arrow on the MSB (SW1) switch to 0
and the arrow on the LSB (SW2) switch to 1. Internally, the BACnet device instance is automatically
generated as 1610101.
SW1 M S B
0
10's
Set the SW3 DIP switches 1 and 2 for the appropriate communications speed (9600, 19.2k, 38.4k, or 76.8k
3
bps).
NOTE Use the same baud rate and communication settings for all controllers on the network segment. The
RTU Open is fixed at 8 data bits, No Parity, and 1 Stop bit for this protocol's communications.
Baud DIP switch settings
Baud rate
9,600 bps
19.2 kbps
38.4 kbps
76.8 kbps
RTU Open v5
Integration Guide
Off
On
SW2 LS B
0
1's
2
Off
On
Off
On
On
On
1
Off
Off
On
On
5
Communications wiring
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