Network Topology - Delta DNT-T221 Installation Manual

DNT-T221 (Rev 4.1) Installation Guide

Network Topology

1. BACstats Configured as MS/TP Subnet Devices
With V3.21 firmware or higher, one possible MS/TP network architecture has the MS/TP devices configured as
Subnet devices, which allows BACstats to reside on the MS/TP network with other Subnet devices. Note that
V3.21 requires a DCU, while V3.22 or higher may use any System Controller instead.
2. BACstats Configured as LINKnet Devices
The BACstat may reside on LINKnet instead of MS/TP. However, this requires a controller that supports a
LINKnet network for I/O expansion. The maximum LINKnet devices with or without I/O depends on the
controller. All built-in applications must be disabled, but the I/O may be muxed (with V3.22 or higher
firmware).
Network Diagram
(with V3.22 Firmware)
ORCAview
PTP
OWS
System Devices
RS-232
DSC-1616EX [DCU]
DCU/DSC
DSC-1616(H/E)
DSC-1212(H/E)
DSC-1280(H/E)
(System Device)
DSC-T305
Subnet Devices
16x16 Controller
12x12 Controller
12x8 Controller
6x6 Controller
Room Controller
VAV/VVT Controller
Lighting Controller
BACstat I
BACstat II
(with or without I/O)
Input Field Modules
LINKnet Notes:
1. Ensure you use the recommended
LINKnet Devices
2. Ensure the cable is installed as a daisy-
BACstat I
BACstat II
(with No I/O)
3. *Ensure you jumper select a MS/TP
BACstat II
(with muxed I/O)
4. Depending on the controller, up to 12
I/O Field Modules
Page 8 of 10
Ethernet Note:
If the DCU or DSC has Ethernet capability, it may exist on an
Ethernet network with other controllers in the same building, on which
TRM
the ORCAview OWS could reside as well (instead of PTP).
RS-485
BACnet (MS/TP) - Level 3 Network (Subnet)
NET1 NET2
DAC
(Subnet
Device)
balanced cable.
chain from one device to the next. (1000'
or 300m maximum).
termination resistor when you have more
than 1 or 2 devices.
devices are supported on a LINKnet
network, with limitations on how many of
these may have I/O. (Refer to the
Technical Reference Manual.)
MS/TP Notes:
1. Ensure you use the recommended balanced cable.
2. Ensure the cable is installed as a daisy-chain from one
device to the next (4,000' or 1220m maximum).
3. *Ensure you jumper select a termination resistor on each
end of each MS/TP network segment.
4. The maximum nodes per MS/TP network is 50 without a
repeater or up to 99 with at least one repeater (RPT-768).
DFM
Level 4
Network
(LINKnet)
* Note 3
TRM TRM
NET1 NET2
DAC
(Subnet
Device)
Level 4
Network
(LINKnet)
Document Edition 1.8