31

Remote Occupancy

The remote occupancy accessory is a field--installed
accessory. This accessoryove rrides the unoccupied mode
and puts the unit in occupied mode. When installing this
accessory, the unit must be configured for remote
occupancy by setting MENU
→
Config
→
Inputs
→
input 3,
5, 8, or 9 to Remote Occupancy and normally open (N/O)
or normally closed (N/C).
Also set MENU
→
Schedules
→
occupancy source to DI
on/off. Input 8 or 9 is recommended for easy of
installation. Refer to Fig. 47 and Table 8 for wire
terminationsat J5.

PowerExhaust (output)

Connectthe accessory Power Exhaust contactor coil(s) per
Fig. 55.
Power ExhaustJ11-3CTANGRAPECCTBTHERMOSTAT
C08464
Fig. 55 --RTU--MP Power Exhaust Connections
Space Relative Humidity Sensor -- The RH sensor is not
used with50TCQ models at this time.

Communication Wiring --Protocols

General

Protocols are the communication languages spoken by
control devices. The main purpose of a protocol is to
communicate information in the most efficient method
possible. Different protocols exist to provide different
kinds of information for different applications. In the BAS
application, many different protocols are used, depending
on manufacturer. Protocols do not change the function of
a controller;just make the front end user different.
The RTU--MP 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 usedto set the
board’snetwork address. See Fig. 56 for the switchsetting
per protocol. The 3rd party connection to the RTU--MPis
through plug J19.
NOTE: Power must be cycled after changing the SW1--3
switchsettings.
Refer to the RTU--MP 3rd Party Integration Guide for
more detailed information on protocols,3rd party wiring,
and networking.
SW3 Protocol Selection
PROTOCOL DS8 DS7 DS6 DS5 DS4 DS3 DS2 DS1
BACnet MS/TP
(Master) Unused OFF OFF OFF ON OFF SelectBau d SelectBa ud
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 OFF
NOTE:
DS= Dip Switch
BACnetMS/TP SW3 example shown
Baud Rate Selections
BAUDRATE DS2 DS1
9600 OFF OFF
19,200 ON OFF
38,400 OFF ON
76,800 ON ON C07166
Fig. 56 --RTU--MP SW3 Dip Switch Settings
50TCQA