Carrier 50TCQD, Installation Instructions Manual

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The RTU Open controller can be set to communicate on
four different protocols: BACnet, Modbus, N2, and
LonWorks. Switch 3 (SW3) on the board is used to set
protocol and baud rate. Switches 1 and 2 (SW1 and SW2)
are used to set the board’s network address. See Fig. 72
and 73 for protocol switch settings and address switches.
The third party connection to the RTU Open controller is
through plug J19. See Fig. 74 for wiring.
NOTE : Power must be cycled after changing the SW1--3
switch settings.
Refer to the
RTU Open v3 Integration Guide
for more
detailed information on protocols, third party wiring, and
networking.
Local Access
Wall Mounted Equipment Touch
t
Interface
The Equipment Touch interface is a wall mounted interface
used to connect to the RTU Open controller to access the
control information, read sensor values, and perform
maintenance. This is an accessory interface that does not
come with the RTU Open controller. Wire the Equipment
Touch interface to the RTU Open controller J13 local access
port. There are 2 password protected levels in the display
(User and Admin). See the Equipment Touch Installation
and Setup Guide for more information. See Appendix A in
the guide for navigation and screen content.
SW3 Protocol Selection
PROTOCOL DS8 DS7 DS6 DS5 DS4 DS3 DS2 DS1
BACnet MS/TP
(Master)
Unused OFF OFF OFF ON OFF Select Baud Select Baud
Modbus
(Slave)
Unused OFF OFF ON ON OFF Select Baud Select Baud
N2
(Slave)
Unused OFF OFF OFF ON ON OFF OFF
LonWorks
Unused ON ON OFF ON OFF OFF ON
NOTE:
DS = DIP Switch
BACnet MS/TP SW3 example shown
Baud Rate Selections
BAUD RATE DS2 DS1
9600 OFF OFF
19,200 ON OFF
38,400 OFF ON
76,800 ON ON
C07166
Fig. 72 -- RTU Open Controller SW3 DIP Switch Settings
C10815
Fig. 73 -- RTU Open Controller Address Switches
C10816
Fig. 74 -- Network Wiring